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60910 sy pc 20100415-s00002 no.a1709-1/68 LV25700PM overview the LV25700PM is a tuner ic for car radio, which incorpor ates an am/fm tuner, pll, am/fm noise canceller (nc), fm stereo-decoder (mpx), multipath-noise rejection circu it (mrc), and rds demodulator logic-controller. the basic performance is based on the lv25210, and both adjustment-free operation and software control of the if band variable filter are possible. this ic enables easy configuration of a low- cost, high performance analog tuner for oem. functions ? am/fm + fe + pll + if + nc + mpx + mrc + rds demodulator + logic-controller features ? world-wide compatible tuners world-wide compatible tuners can be configured and supplied with a single tuner ic. fm is compatible with u.s., european, japanese and weat her bands, while am is comp atible with lw, mw and sw. high performance image cancel mi xer incorporated in fm mix. pll fast locking, rds demodulator and am/fm noise canceller incorporated ? self-contained type if band variable filter incorporated detects any neighboring interfering fm st ations and the modulation in dex, and enables various bandwidth settings of the if bandpass filter by using the software incorporated in the ic. continued on next page. ordering number : ena1709 bi-cmos ic for car radio single chip tuner ic ? ccb is a registered trademark of sanyo electric co., ltd. ? ccb is sanyo semiconductor's original bus format. all bus addresses are managed by sanyo semiconductor for this format. specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general el ectronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use.
LV25700PM no.a1709-2/68 continued from preceding page. ? auto alignment eeprom not necessary. it is incorporated inside the ic fm rf, vco, null-voltage, mute-on, mute-att, snc, hcc, separation, s-meter, am/fm agc sensitivity, am/fm if gain, sd sensitivity, i 2 c bus compatible * this ic can be supplied in the adjusted state. some ad justments are necessary depend ing on the specifications and external components. ? other functions neighboring interference (quality out) rds af-search support i 2 c communication bus specifications absolute maximum ratings at ta = 25 c, gnd = 0v parameter symbol conditions ratings unit v cc _h max 8.7 v v cc _l max 5.7 v v dd max 6.5 v maximum supply voltage v ddbus max 6.5 v maximum input current v in max 6.5 v maximum output current v o max 6.5 v allowable power dissipation pd max (ta 85c) 1040 mw operating temperature topr -40 to +85 c storage temperature tstg -40 to +150 c recommended operating conditions at ta = 25 c, gnd = 0v parameter symbol conditions ratings unit v cc _h pin 1, 2, 15, 68, 80 8.0 v v cc _l pin 53, 74 5.0 v v dd pin 35 5.0 v recommended supply voltage v ddbus pin 34 5.0 v recommended operating conditions at ta = 25 c, gnd = 0v ratings parameter symbol conditions min typ max unit v dd pin 35 4.5 5.0 5.5 v v ddbus pin 34 (*1) 3.0 5.0 5.5 v v cop _h pin 1, 2, 15, 68, 80 7.5 8.0 8.5 v operating supply voltage range v cop _l pin 53, 74 4.5 5.0 5.5 v logic operation, memory hold voltage range v ddlogic pin 35 3.5 5.5 v internal supply v reg pin 36 v ddlogic > 3.5v (*2) 3.0 v input high level voltage v ih pin 31, 32, 33 0.8v ddbus v ddbus v input low level voltage v il pin 31, 32, 33 0 0.2v ddbus v input amplitude voltage v in pin 39 0.5 1.5 vrms input frequencies f in pin 39 20.5 mhz i ih (1) pin 39, v i = v dd = 5.0v 2.0 5.0 15.0 a input high level current i ih (2) pin 31, 32, 33 v i = v dd = v ddbus = 5.0v 3.0 a i il (1) pin 39, v i = v dd = v ss 2.0 5.0 15.0 a input low level voltage i il (2) v i = v ss 3.0 a hysteresis width vh pin 31, 32, 33 0.1v ddbus 0.2v ddbus v v oh (1) pin 26, 27, 28, 29, 30 i o = -1ma, v dd = v ddbus v dd -1.0 v v oh (2) pin 38 i o = -200 a, v dd = v ddbus v reg -1.0 v output high level voltage v oh (3) pin 21, 22 i o = -500 a, v dd = v ddbus v dd -1.0 v continued on next page.
LV25700PM no.a1709-3/68 continued from preceding page. ratings parameter symbol conditions min typ max unit v ol (1) pin 26, 27, 28, 29, 30 i o = -1ma, v dd = v ddbus 1.0 v v ol (2) pin 38 i o = -200 a, v dd = v ddbus 1.0 v v ol (3) pin 21, 22 i o = -500 a, v dd = v ddbus 1.0 v output low level voltage v ol (4) pin 31, 32 i o = -5ma, v dd = v ddbus 1.0 v ioff(1) pin 26, 27, 28, 29, 30, 31, 32 -3 +3 a output off leak current ioff(2) pin 21, 22 -100 +100 na reset application time at power on. tpor pin 33 50 ms reset application time at instantaneous power failure. tpdr pin 33 50 ms oscillation stabilization time after reset input is completed tckr pin 36 (*2) 80 ms (*1): use with v dd < v ddbus is prohibited. (*2): external access to lv25700, other than reset or power supply, that results in v reg = v ddlogic during reset application and until xin oscillation stabilizes (tckr), should wait until t he tckr time elapses a fter reset is released. package dimensions unit : mm (typ) 3174a sanyo : qip80e(14x20) 20.0 23.2 0.15 0.35 0.8 (2.7) 3.0max 0.1 0.8 (0.8) 24 1 14.0 17.2 25 40 41 64 65 80
LV25700PM no.a1709-4/68 reset timing at power-on reset timing at instantaneous power failure reset timing at power-off vcop_h vcop_l/v ddlogic gnd_v ss v ddbus tckr tpor power supplies must be applied after low level input to reset (pin 33) is established. reset (low level depends on v ddbus .) input low level to reset starting from before power is applied until 50ms (tpor) or more after power is stabilized. the power supplies must be applied in the order of 8v to 5v. (can also be applied simultaneously.) in case the reset pin is left open, perform pull-down or other pin treatment. vcop_h vcop_l/v ddlogic gnd_v ss v ddbus tckr tpdr 3.5v input low level to reset when the v ddlogic voltage falls to 3.5v or less. input low level to reset starting from when the instantaneous power failure is detected until 50ms (tpdr) or more after the power supply is stabilized. 3.5v vcop_h vcop_l/v ddlogic gnd_v ss v ddbus the power supplies must be turned off in the order of 5v to 8v. (can also be turned off simultaneously.) input low level to reset when the v ddlogic voltage falls to 3.5v or less. input low level to reset during power off.
LV25700PM no.a1709-5/68 ac characteristics operating characteristics at ta = 25c, v cc = 8.0v, v dd = 5.0v, unless otherwise specified. ratings for publications * : these measurements are made using the yamaichi electronics ic51-0804-819-2 ic socket. an ihf bandpass filter is used as the audio filter. [fm characteristics ] fm front end mixer input parameter symbol conditions min typ max unit current drain-8v i cco f-8v no input, fm mode i1+i2+i15+i68+i80 60 73 85 ma current drain-5v i cco f-5v no input, fm mode i35+i53+i74 37 45 52 ma demodulation output v o -fm_1 98.1mhz, 60db v, 1khz, 100%mod, pin 49 400 550 700 mvrms detection output v o -fm_2 98.1mhz, 60db v, 1khz, 100%mod, pin 60 280 380 480 mvrms channel balance cb 98.1mhz, 60db v, 1khz, pins 49 and 50 -1 0 1 db total harmonic distortion t hd-fm mono (1) 98.1mhz, 60db v, 1khz, 100%mod, pin 49 0.2 1 % total harmonic distortion t hd-fm mono (2) 98.1mhz, 60db v, 1khz, 150%mod, pin 49 0.3 2.5 % signal to noise ratio (mono) s/n-fm-mono 98.1mhz, 60db v, 1khz, 100%mod, pin 49 60 70 db signal to noise ratio (st) s/n-fm-st 98.1mhz, 60db v, 1khz, 100%mod, pin 49, l+r = 90%, pilot = 10% 58 65 db am suppression ratio amr 98.1mhz, 60db v, 1khz, 100%mod, 30% in am mode, fm = 400hz, pin 49 58 67 db muting attenuation (1) att-1 98.1mhz, 60db v, 1khz, with v64 = 0 2v, pin 49 attenuation (mute att sw = 0) -30 -25 -20 db muting attenuation (2) att-2 98.1mhz, 60db v, 1khz, with v64 = 0 2v, pin 49 attenuation (mute att sw = 2) -23 -18 -13 db muting attenuation (3) att-3 98.1mhz, 60db v, 1khz, with v64 = 0 1v, pin 49 attenuation (mute att sw = 2) -11 -6 -1 db separation separation 98.1mhz, 60db v, mod = 100%, pilot = 10%, pin 49 output ratio separation control adj 27 43 db stereo on level st-on pilot demodulation at which v27 < 0.5v is established 1.5 3.8 5.5 % stereo off level st-off pilot demodulation at which v27 < 3.0v is established 1.2 3.2 % main distortion factor thd-main l 98.1mhz, 60db v, l+r = 90%, pilot = 10%, pin 49 0.5 1.2 % snc output attenuati on attsnc 98.1mhz, 40db v, l-r = 90%, pilot = 10%, pin 49 (l r) 5 10 15 db hcc output attenuation fm hcc 98.1mhz, 60db v, 10khz, modulation = 30% reference, input level at which the output is down by -3db 24 30 36 db v input limiting voltage vi-lim 98.1mhz, 60db v, 30%mod, mix input at which the input reference output is down by -3db, v42 = 0v, v29 = 0v, with mute = off -6 -1 4 db v muting sensitivity vi-mute mix input level at v64 = 0.7v, non-mod 0.1 5 9.9 db v sd sensitivity sd-senfm mix input leve l at which sd pin is on, shifter- adj, non-mod 20 25 30 db v if count sensitivity if-count-sens. fm if c ount sensitivity at mix input, non-mod 20 db v continued on next page.
LV25700PM no.a1709-6/68 continued from preceding page. parameter symbol conditions min typ max unit vsmfm-1 no input, pin 44 dc output non-mod 0.5 v vsmfm-2 10db v, pin 44 dc output non-mod 0.85 v vsmfm-3 30db v, pin 44 dc output non-mod, s-meter shift-adj 1.8 1.85 1.9 v vsmfm-4 50db v, pin 44 dc output non-mod 3.0 v s-meter dc output vsmfm-5 80db v, pin 44 dc output non-mod 4.5 v vsmfm-a1 no input, pin 57 dc output non-mod 0.45 v vsmfm-a2 10db v, pin 57 dc output non-mod 0.63 v vsmfm-a3 30db v, pin 57 dc output non-mod 1.15 1.45 1.75 v vsmfm-a4 50db v, pin 57 dc output non-mod 2.45 v s-meter ac pin dc output vsmfm-a5 80db v, pin 57 dc output non-mod 4.5 v s-meter inclination standard - 1 s-curve1 which was obtained by deducting (vsmfm-2) from vsm (vsmfm-3) 0.85 1.0 1.4 v s-meter inclination standard - 2 s-curve2 which was obtained by deducting (vsmfm-3) from vsm (vsmfm-4) 0.8 1.15 1.5 v mute drive output vmute-60 60db v, pin 64 output dc outpu t non-mod 0.15 0.3 v noise convergence - 1 fm noise-20 60db v.98.1mhz, 30%mod, input reference, output level of the input -20db v, mute = off (42pin = gnd) -12 -7 -3 db n-agc on input vnagc 98.1mhz, non- mod, mix input level at which pin 13 becomes 0.6v or more 64 69 74 db v w-agc on input vwagc 98.1mhz, non-mod, pin 44 = 0v applied (keyed on), mix input level at which pin 13 becomes 0.6v or more 80 88 96 db image obstruction ratio irr removal amount of 108.1m +21.4mhz (when irr-dac is used) 40 db sd bandwidth bw-mute 98.1mhz, non-mod, 60db v, bandwidth at which sd pin is turned on 70 100 130 khz conversion gain (mix+1 st if amp) a.v. 98.1mhz, 60db v, non-mod, fecf output 93 97 101 db v [fm if filter characteristics] fm if input parameter symbol conditions min typ max unit if variable filter gain fil-gain 10.7mhz, non-mod, 70db v, pin 44-s-meter voltage (filter test mode). narrow-fix 1.9 v if variable filter narrow-band characteristics fil-bw-n 10.7mhz30khz, non-mod, 70db pin 44 s-meter voltage (filter test mode). narrow-fix mode. difference from pin 44 voltage at 10.7 mhz 0.3 v if variable filter wide-band characteristics fil-bw-w 10.7mhz80khz, non-mod, 70db pin 44 s-meter voltage (filter test mode). wide-fix mode. difference from pin 44 voltage at 10.7 mhz 0.5 v
LV25700PM no.a1709-7/68 [nc block] nc input (pin 59), s-meter ac input (pin 57) parameter symbol conditions min typ max unit fm nc gate time fm gate nc input, pulse cycle = 1khz, 44pin = 2v applied, pulse width = 1 s, at 200mvp-o pulse input (after mpx-vco adjustment), measur ement at pin 24. 36 40 44 s fm nc noise sensitivity sn-detout nc i nput (pin 59), 44pin = 2v applied, measure the pulse input level at which the noise canceller starts operation, pulse cycle = 1khz, pulse width = 1 s 95 130 165 mvp-o fm nc noise sensitivity sn-vsm s-meter (ac) input (pin 57), 44pin = 0v applied, measure the pulse input level at which the noise canceller starts operation, pulse cycle = 1khz, pulse width = 1 s 90 mvp-o am nc gate time am gate (1) s-meter (ac) input (pin 57), pulse cycle = 1khz, pulse width = 1 s, measurement at pin 24. 44pin = 1.5v 270 390 510 s am nc noise sensitivity sn s-meter (ac) input (pin 57), measure the pulse input level at which the noise canceller starts operation, pulse cycle=1khz, pulse width=1 s 220 mvp-o [multipath-noise rejection circuit] mrc input (pin 58) parameter symbol conditions min typ max unit mrc output vmrc pin 56 voltage when 3.5 v is applied to v44 2.7 2.95 3.2 v mrc operation level mrc-on sg (ag5) out level when pin 44 = 3.5v and pin 56 = 2.6v, f = 70khz 110 155 220 mvrms [am characteristics] am amant input parameter symbol conditions min typ max unit practical sensitivity s/n-30 1mhz, 30db v, fm = 1khz, 30%mod, pin 49 20 db detection output vo-am 1mhz, 74db v, fm = 1khz, 30%mod, pin 49 130 180 250 mvrms agc-f.o.m v agc-fom 1mhz, 74db v, output reference, input width at which the output decreases by 10db, pin 49 52 56 60 db signal-to-noise ratio s/n-am 1mhz, 74db v, fm = 1khz, 30%mod 51 60 db total harmonic distortion ratio - 1 thd-am-1 1mhz, 74db v, fm = 1khz, 80%mod 0.3 1 % total harmonic distortion ratio - 2 thd-am-2 1mhz, 120db v, fm = 1khz, 80%mod 0.5 1.5 % am hcc output attenuation am hcc 1mhz, 74db v, fm = 3khz, 30%mod, v78 = 3v 0.6v, 25 pin -13 -9 -5 db vsmamdc-1 no input, 44 pin dc output 0 0.1 0.5 v vsmamdc-2 1mhz, 30db v, non-mod, 44 pin dc output 0.7 1.3 1.9 v s-meter dc output vsmamdc-3 1mhz, 120db v, non-mod, 44 pin dc output 2.4 3.0 4.2 v vsmamac-1 1mhz, -20db v, fm = 1khz, 80%mod, 57 pin dc output 0 0.5 mvrms s-meter ac output vsmamac-2 1mhz, 74db v, fm = 1khz, 80%mod, 57 pin dc output 90 140 180 mvrms wide band agc sensitivity w-agc.am 1. 4mhz, input at v6 = 0.7v 86 92 98 db v sd sensitivity sd-sen.am 1mhz, ant i nput level at which the sd pin is turned on 25 30 35 db v if count sensitivity if-count-sens. am if count sensitivity, 1mhz, non-mod 22 db v
LV25700PM no.a1709-8/68 pin function pin no. function name block pin no. function name block 1 mix-out1 fe 41 rds_lpf if 2 rf-v cc _8v --- 42 f2 logic 3 am-mix-in2 am 43 f1 logic 4 am-mix-in1 am 44 s-meter if 5 am-rfagc am 45 afc-out. if 6 am-att am 46 afc-c if 7 fm-rfdac fe 47 noise-agc nc 8 am-ifagc/fm-rfagc am/fm 48 gnd --- 9 fm-antdac fe 49 mpx lch-out mpx 10 fm-in1 pll 50 mpx rch-out mpx 11 fm-in2 pll 51 chcc mpx 12 rf-gnd2 pll 52 mpx_in mpx 13 fm-ant-d fe 53 nc-mpx-v cc --- 14 vco-gnd --- 54 phase_dat mpx 15 osc-v cc --- 55 phase_dat mpx 16 am/fm-osc(b) fe 56 mrc-time mrc 17 am/fm-osc(c) fe 57 vsm-ac if 18 signal quarity if 58 mrc-in mrc 19 vt pll 59 nc-in nc 20 am/fm fet pll 60 det-out if 21 cpam pll 61 vreg49 am/fm 22 cpfm pll 62 am-if-in1 am 23 fet gnd pll 63 am-if-in2 am 24 dc monitor mpx 64 mute-cont if 25 f3 logic 65 ifagc-lpf fe 26 ul/ifend/busy logic 66 am_lc/pilot-det. am 27 sd_out/st_ind --- 67 sep.-adj mpx 28 q_out mpx 68 am-mix2 am 29 rd_da logic 69 2 nd -mixin2 am 30 rd_cl logic 70 2 nd -mixin1 am 31 s_da logic 71 mod.-det nc 32 s_ck logic 72 if-gnd --- 33 reset logic 73 1 st -if-out fm 34 bus(tp34) logic 74 if-v cc -5v --- 35 d_v cc _5v --- 75 1 st -if-in1 fe 36 vreg_3v --- 76 1 st -if-in2 fe 37 d_gnd --- 77 am-rf-agc am 38 xtal_out x'tal 78 hcc-cont am/fm 39 xtal_in x'tal 79 rfagc-in bypass fe 40 xtal_gnd --- 80 mix-out2 fe
LV25700PM no.a1709-9/68 block diagram + 50 r10b 50 c15 0.022 f sg1 ac1 39 38 37 35 34 33 32 31 30 29 28 27 26 25 65 66 67 68 69 71 74 75 76 77 78 79 41 46 47 51 52 54 55 56 58 60 61 64 23 21 20 16 14 13 12 4 2 1 2 fm_rfagc/am_ifagc v cc _gnd fm_ant_dr osc_v cc fe_osc1 15 sw5d c14 0.22 f r13b 330 c18 1 f 8v(15pin) i 2 c_bus logic pll a/d r21 2.7k r22 3.3k 10k 3k c21 0.22 f c22a 15000pf c22b 1000pf r18 33k c16 2pf fe_osc2 a_qout fet_gnd fet_gnd2 dc mon f3 if_end st_ind q_out rd_da rd_cl s_da s_ck reset bus d_v cc _5v vreg_3v d_gnd xtal_out xtal_in xtal_gnd mix_out2 rfagc_in _bypass hcc_cont am_rf_ agc_out 1st_if_amp 1st_if_in if_v cc _5v 1st_if_out if_gnd mod _index 2nd_mix _in1 2nd_mix _in2 am_mix2 sepa_adj am_lc am_rf _agc vt_lpf vt_count cpam r41 3.3k c41b 68nf c41a 3.9nf rds_lpf cpfm c17 3pf fm_mix_in1 ant_dac rf_dac am_att_d am_rfagc mix_out1 rf_v cc _8v am_mix_in1 am_mix_in2 c10 1000pf t10 mix_in t68 ift_450k cf3 cf_450k sw2 sw4 sw3 ac4 sw1 fm_mix_in2 mpx_in r_out hcc_c l_out bb_gnd nc_agc bb_v cc afc_c afc_out s_meter pd2 mrc_time vsm_ac mrc_in nc_in det_out vref_4.9v am_if_in1 am_if_in2 mute_cont pd1 c10 1000pf c16b 330pf l16 l_osc c18 150pf c16a 2pf vcd2 svc704 c58 0.022 f c5 0.022 f c74a 0.022 f c74b 10 f c76 0.022 f c77 1 f c78 1 f c79 1 f c80 0.022 f r80 30 c10b 0.022 f fm_in c6 0.47 f r6 470 r5 100k r6a 10k 5v l_am1 6.8 h l_am3 1mh fet1 cpm5905 r2 680 l_am4 47 h l_am2 30mh 1:open 2:short d3 1sv251 c13c 2200pf 65pf + c2a 22n c2b 100 f c3 0.1 f c4a 0.22 f c4b 36pf c4c 15pf c53 0.22 f c56 1 f c55 1 f c54 0.47 f c52 0.47 f c47 0.47 f c50 0.015 f c49 0.015 f c44 0.22 f c45b 0.47 f c45 0.01 f c51 2200pf r54 3k r47 1m 15pf vref 2.7v afc q_out if_bw_out sd/st inj/mpx vco vsm nc_gate d1 1sv251 17 18 19 22 1 2 rf_agc fm_att sw5c c8 0.22 f r8 10k 5v 1 2 sw5a sw5b r31 10k r30 10k c36 10 f c35 1 f p_cancel n_agc state_det n_sens n_gate afc_sw sepa_adj. xtal_osc d/a sw phase lpf ff p_dec. 38k<0 lmt iq_mix. 19k<0 sd sub_dec. matrix fm_det. smeter fm_rf_agc rf_local rds_dec afc div. mute hpf lpf snc hcc m s mrc rf_dac att. (i) s_dl (i/o) reset x'tal_out (i) s_da (i/o) q_out dc ac freq u6 +5v 51 -5v hfa1112 c38b 3pf c38 18pf c39 18pf vb x1 20.5m 1 3 2 (o) st_ind dc dc dc ac u2 v.v (o) vsm (dc) dc vsm (dc) dc vafc dc vc va 0.1v, 0.6v, 3v t80 ift_10.7m cf1 cf_10.7m cf2 cf_10.7m vsm_ac dc vsm_ac dc/ac mrc out dc r-ch out ac l-ch out ac if_end det_out am_rf_agc (o) dc_mon a_qout dc/freq dc (o) dc dc fm_antd dc fm_att dc am_ant_d dc rf_dac ant_dac f3 hcc v cc _5v v cc _8v vt (o) f1 di (i) f2 clk (i) rd_dl (o) rd_da (o) (i) r33 10k c33 0.1 f + 36 + - am_rf_agc if_local if_agc am_det. if_amp. b.v._bpf q_cont. + - cf out +5v 51 -5v hfa1112 3 1 2 + - osc out ac u1 +5v 51 -5v hfa1112 c17b 3pf ac input sw ac1 sw1 fm in if_in ac2 sw2 if in if_out_monitor ac3 sw3 if in nc_in ac4 sw4 mrc in pulse_in ac5 sw5a/5b/5c/5d pulse in int_att sw 1 3 2 + - 11 10 3 r13a 1k c13c 2200pf d2 1sv251 51 ac2 sg2 if_in 50 30 ac3 sg2 am_in 9 8 50 300 100 0.022 f 0.022 f 51 a c5(pulse) f=1khz wide=1 s 0.1 f c67 1 f c66 1 f c65 1 f c69 0.022 f c54 1 f c63 0.1 f c61 0.1 f c60 18000pf c59 1 f c57 0.01 f c71 1 f sw1 if in 7 6 5 80 1 73 72 70 62 sw2 cf out sw3 nc in sw4 pg in 59 44 45 48 49 50 53 57 mpx_pll 42 43 63 24 40 v cc _8v v cc _5v v cc _3v v cc _5v
LV25700PM no.a1709-10/68 performance emphasis (fm fet specifications) + c15 0.022 f 40 39 38 35 34 33 32 31 30 29 28 27 26 25 65 66 67 68 69 71 74 75 76 77 78 79 41 46 47 51 52 54 55 56 58 60 61 64 23 21 20 16 12 4 2 fm_ant_dr osc_v cc osc1 15 c18 1 f c33 1 f 8v(15pin) i 2 c_bus logic pll a/d r21 2.7k r22 3.3k 10k fm_on 3k c21 0.22 f c22a 15000pf c22b 1000pf c19 33k c16 2pf osc2 vt fet_gnd rf_gnd2 vco_gnd dc monitor f3 ul_ifend_busy st_out st_ind q_out rd_da rd_cl s_da s_ck reset tp34 s_meter dgnd 5v reset connecter a connecter c sck sda rdcl rdda qout st/sd ul 8v 8v 8v 5v vsm_ac 5v r_out l_out f1 f2 f3 dcmon signal quality vt am_ant fm_ant sck sda gnd gnd bus d_v cc _5v vreg_3v d_gnd xtal_out xtal_in xtal_gnd mix_out2 rfagc_in bypass hcc_cont am_rf_agc 1st_if_in2 1st_if_in1 if_v cc _5v 1st_if_out if_gnd mod_det r71 2nd_mixin1 2nd_mixin2 am_mix2 sepa_adj am_lc pilot_det ifagc_lpf cpam r41 3.3k c41b 68nf c41a 3.9nf rds_lpf cpfm c17 3pf fm_in1 g1 g2 am_att am_ifagc fm_rfagc fm_antdac fm_rfdac am_rfagc mix_out1 rf_v cc _8v am_mix_in1 am_mix_in2 c10 4pf c11d 1000pf c11e 4pf t10 fm_rf fet2 3sk263 vcd1 fm_rf t68 ift_450k cf3 cf_450k fm_in2 mpx_in r_out hcc_c l_out gnd agc noise nc_mpx_v cc afc_c afc_out s_meter mrc_time vsm_ac mrc_in nc_in det_out vref_4.9v am_ifin1 am_ifin2 mute_cont c11 4pf c16b 27pf l16 l_osc c19 150pf c16a 4pf vcd2 svc704 c5 0.022 f c74a 0.022 f c74b 10 f c76 0.022 f c77 1 f c78 1 f c79 1 f c80 0.022 f r80 30 r5 100k r10a 100 c10b 8pf c10a 100pf c11b 1000pf c11a 1000pf c57 1000pf r11a 100k f l_am3 1mh fet1 cpm5905 r2 680 l_am4 47 h d3 1sv251 c5b 0.022 f c6 0.022 f l_am2 30mh l_am1 6.8 h + c2a 0.022 f c2b 100 f c3 0.1 f c4a 0.22 f c7 1000pf r7 30k r8 220k r11c 100k r9a 100k l8 fm ant r11d 100k r10 30 r11b 180 gnd_rf c8 0.22 f c4b 36pf c4c 15pf c2c 0.022 f vcd3 fm_ant gnd_rf c11c 2pf c53 0.22 f c56 1 f c55 1 f c52 0.47 f c47 0.47 f c44 0.22 f c45b 0.01 f c45 0.01 f c51 2200pf r54 3k r47 1m r6 470 r13 330 17 18 19 22 r31 10k r32 10k c36 10 f c35 1 f c36b 1 f p_cancel n_agc state_det n_sens n_gate afc_sw sepa_adj. xtal_osc d/a sw phase lpf ff p_dec. 38k<0 lmt iq_mix. 19k<0 sd sub_dec. matrix fm_det. smeter fm_rf_agc rf_local rds_dec afc div. mute hpf lpf snc hcc m s mrc rf_dac att. c38 18pf c39 18pf x1 20.5m t80 ift_10.7m cf1 cf_10.7m cf2 cf_10.7m c9 1000pf d4 1sv251 c13 0.1 f + 36 am_rf_agc if_local if_agc am_det. if_amp. b.v._bpf q_cont. + - 11 10 3 9 8 c67 1 f c66 1 f c65 1 f c69 0.022 f c54 1 f c63 0.1 f c61 0.1 f c60 c59 1 f c57 2200pf c71 1 f 7 6 5 80 1 73 72 70 62 59 44 45 48 49 50 53 57 mpx_pll 42 43 63 24 37 14 13 c50 0.015 f c49 0.015 f phase_det phase_det c54 0.47 f
LV25700PM no.a1709-11/68 pin discription pin name function discription internal equivalent circuit 1 80 mixer out1 mixer out1 fm/am mix out (common) 1 80 rf_gnd(pin12) 2 rf v cc v cc = 8v 3 4 am mixer input 1 am mixer input 2 am mix in input impedance = 10k 4 3 110 110 10k 2.5k 12k 10k rf_v cc (pin2) rf_gnd(pin2) 5 am rf agc rf agc rectifier capacitor determination of distortion ratio during low-frequency modulation increase c5; distortion improved response slow decrease c5; distortion worse response quick 5 1k 1k 1k 1k rf_v cc (pin2) if_gnd(pin72) if_gnd(pin72) agc_dec 6 am ant att for pin diode drive i6 = 8ma ant damping current 6 1k 1k 200 rf_v cc (pin2) if_gnd(pin72) continued on next page.
LV25700PM no.a1709-12/68 continued from preceding page. pin name function discription internal equivalent circuit 7 fm-rf-dac fm rf tuning dac 7 1k 30k 0.8ma if_gnd(pin72) rf_v cc (pin2) 8 am if agc fm rf agc if agc voltage: dc smoothing capacitor pin fm rf agc voltage: voltage = hi (around 8v) with agc off. the voltage lowers when a level is inserted into the agc circuit. agc is applied at the voltage of v cc -vbe. a gc 500 500 36k 1k 2k 2k 10k 1k 48k 20k 500 am_if_agc fm_rf_agc 1k if_gnd(pin72) 8 rf_v cc (pin2) 9 fm-ant-dac (irr-dac) fm ant tuning dac can be used as an irr-dac selected with a changeover switch. 7 16 1k 30k 133k 100k 0.8ma if_gnd(pin72) rf_v cc (pin2) 10 11 fm mixer in1 fm mixer in2 fm mix input 10 11 20 20 20 20 10k 10k rf_gnd(pin12) 12 rf gnd2 (fe, fm, am) rf gnd continued on next page.
LV25700PM no.a1709-13/68 continued from preceding page. pin name function discription internal equivalent circuit 13 antenna damping drive pin pin 13: antenna damping current flows when the rf agc voltage becomes v cc - vbe. 13 300 300 75k rf_v cc (pin2) rf_gnd(pin12) 14 vco_gnd gnd 15 osc v cc (osc) v cc = 8v 16 17 osc1 osc2 osc pin 17 16 0.5k 0.8k 100k dac irr_sw 200k 0.5k 0.5k 5k 5k rf_gnd(pin12) osc_v cc (pin15) 18 signal quarity (undesire det) dc smoothing is performed by the output impedance and external capacity. note that too large capacity will reduce the responsiveness of the if filter as the voltage of this pin is also used to control the if filter. 33k 0.5k 18 1k 22k 0.5k if_gnd(pin72) if_v cc (pin74) 3ma continued on next page.
LV25700PM no.a1709-14/68 continued from preceding page. pin name function discription internal equivalent circuit 19 20 21 22 23 vt lpfd cpam cpfm fet_gnd lpfd: internal fet drain output pin for pll this pin is combined with cpfm/cpam pins to form a low pass filter for pll. cpfm, cpam: charge pump output pins these pins are placed in high-impedance state in backup mode, at power-on-reset time, and in pll stop state. d_gnd(pin37) d_v cc (pin35) rf_v cc (pin2) fm_on fm_off fm_on am_off 10k 1k 100 3k 100 100 pll_lpf fetout fetgnd cpam cpfm 100 23 20 19 21 22 24 dc monitor adjustment mode internal signal output monitor pin see bit specifications. normal mode: this pin outputs the sd signal. 12 24 25 26 42 43 f3 ul/ifend/busy f2 f1 f3 this pin must be left open. output port ul/ifend/busy: these pin generates the signal that identifies the radio pll-unlock, if count end, or i 2 c bus busy state. f1, f2 these pins must be left open. default pull-down on. d_gnd (pin37) f1, f2 pin 1 2 3 26 2 3 25 1 2 3 ul/ifend/busy, f3 pin 27 28 31 32 sd_out/st_ind q_out s_da s_ck sd_out/st_ind sd, st_ind signal output pin qout quality-out signal output pin sda, sck i 2 c interface pins. both are of open drain type. external pull-up resistors are needed. use the same power supply for the pull-up resistors and pin 34 bus. these pins are set to an input port at reset time. d_gnd (pin37) s_da,s_ck pin 1 2 3 27 22 1 31 1 sd_out/st_ind,q_out pin continued on next page.
LV25700PM no.a1709-15/68 continued from preceding page. pin name function discription internal equivalent circuit 29 30 rd_da rd_cl rds demodulator signal output pins output low when the rdf is off. 1 2 3 29 rd_da,rd_cl pin 33 reset system reset pin a low-level to this pin resets the system and pc starts executing the program from address 0. when power is turned on, it is necessary to apply low-level to this pin for 50ms or more after the 8v/5v power supply is stabilized (leaving this pin open is inhibited). see the reset timing diagrams. 12 33 34 35 37 bus d_v cc _5v d_gnd power/gnd pins ? bus: power supply for the main microcontroller interface pins. ? dv cc 5v, gdnd: main operating power supply 36 vreg_3v internal operating low-voltage output pin connect a bypass capacitor to this pin. + d_gnd(pin37) 10 f 32 36 38 39 40 xtal_out xtal_in xtal_gnd pins connected to the 20.5mhz oscillating element xtal_gnd: x'tal oscillator circuit gnd 20.5mhz xtalgnd(pin40) 39 38 40 1 2 41 rds_lpf low pass filter for rds vco used to form an external low pass filter d_gnd(pin37) d_v cc_ 5v(pin35) 3.9nf 68nf 3.3k d_gnd(pin37) 41 44 am/fm s_meter (dc) current drive type s-meter output pin 44: eliminates t he ac component by external capacity. pin 57: leaves the ac components (pin for nc noise extraction and for neighboring interfering noise extraction) 57 if_v cc (pin74) rf_v cc (pin2) fm vsm(ac) fm vsm(cc) am vsm(ac) am vsm (dc) vsm(f11) (dc) if_gnd(pin72) 4k 2k 15k 5.3k 4k 300 333 44 continued on next page.
LV25700PM no.a1709-16/68 continued from preceding page. pin name function discription internal equivalent circuit 45 afc_out null voltage as compared with internal 2.7v regulator. if_v cc (pin74) if_gnd(pin72) if_gnd(pin72) if_gnd(pin72) if_gnd(pin72) 2.7v+vloe 1k 1k if_gnd(pin72) 1k 1k 1k 1k 1k 500 10k 20k 45 1k 46 afc_c at reception sw-on shorts between pin 45 and afc capacity. (series, small capacity shorted) at rds sw-off opens between pin 45 and afc capacity. (series, small capacity + large capacity configuration) if_gnd(pin72) 46 1k sw 47 noise agc mos: ncagco 10k 1k 5k bb_v cc (pin53) bb_gnd(pin48) 47 48 gnd (nc, mpx, mrc) gnd 49 50 mpx output (left) mpx output (right) mpx outputs impedance changed over with the de- emphasis changeover. low = 3.3k high = 5.0k (50/75 s changeover with the external capacity of 0.015 s) 49 50 l r gnd(pin48) 5k 5k 72 72 500 500 335 335 335 335 rf_v cc (pin2) continued on next page.
LV25700PM no.a1709-17/68 continued from preceding page. pin name function discription internal equivalent circuit 51 hcc capacitor pin with pin 51 external capacity and internal resistor r, high-cut frequency characteristics are set. internal resistance can be changed over with 3 bits (10k , 30k , 50k , 70k , 90k , 110k , 130k , 150k ) (hcc cut off) rf_v cc (pin2) 10k 1k r gnd(pin48) 51 52 mpx pll input lpf formed with internal resistance 30k and pin 34 eternal capacity hpf formed by subtracting the above lps passage signal from the composite signal. supply to mpx pll circuit bb_v cc (pin53) 1k 30k 1k 52 bb_gnd(pin48) 53 nc mpx v cc (nc, mpx, mrc) v cc = 5v 54 55 phase-comparator for mpx 54 55 10k 13k bb_v cc (pin53) 13k 10k 500 500 bb_gnd(pin48) 56 mrc time the time constant for the multipath-noise detector is determined with the following: 100 resistor and external capacity during discharge iconstant and external capacity during charge. iconstant can be changed over with 2bits (mrc time constant). bb_gnd(pin48) 20k 20s 56 rf_v cc (pin2) 500 500 100 iconst continued on next page.
LV25700PM no.a1709-18/68 continued from preceding page. pin name function discription internal equivalent circuit 57 58 vsm ac mrc input if_v cc (pin74) if_gnd(pin72) bb_gnd(pin48) 1k 1k 30k 30pf c57 68k 5.3k 30k rf_v cc (pin2) 57 58 59 noise canceller input noise canceller input input impedance 50k 59 15pf bb_gnd(pin48) nc-bias 50k 1k 51k bb_v cc (pin53) 60 fm/am det out am/fm detection output output impedance low impedance in the fm mode 12k in the am mode 60 300 28k 12k 100 100 100 100 fm out am out 300 if_gnd(pin72) rf_v cc (pin2) continued on next page.
LV25700PM no.a1709-19/68 continued from preceding page. pin name function discription internal equivalent circuit 61 vref 4.9v reference voltage 61 4.9v+vbe 1k 1k 77k 26k rf_v cc (pin2) if_gnd(pin72) 62 63 am if amp input1 am if amp input2 am 450khz amp input input impedance = 2k 63 10k 10k 1k 62 2.5k if_gnd(pin72) 64 mute cont noise convergence adjustment mute off function mute is turned off when pin 64 is short- circuited with gnd. mute amp logic d/a 64 bb_gnd(pin48) 500 65 if agc lpf time constant changeover at seek switch diode 65 100 10 100 66 frequency characteri stics of unnecessary voice band of 100hz or less is changed to produce the clear sound in the am mode. rf_v cc (pin2) if_gnd(pin72) 1k 1k 400 1k 1k 10k 66 continued on next page.
LV25700PM no.a1709-20/68 continued from preceding page. pin name function discription internal equivalent circuit 67 sepa adj the input level of sub-decoder is varied through bit control. (the output level of mono and main remains unchanged.) (separation control) 67 sub 500 13k sub bias 14k 1k 500 bb_gnd(pin48) 68 am 2 nd mixer output the mixer coil connected to the pin 68 mixer output must be wired to v cc = 8v. 68 osc rf_v cc (pin2) 100 69 70 fm 2 nd mixer input1 fm 2 nd mixer input2 fm 2 nd mixer 10.7mhz 450khz fm amp (10.7mhz) amp for s-meter voltage am mixer input amp for am noise agc pickup if_gnd(pin72) 500 100 167 167 600 600 100 500 500 300 69 70 71 modulation index set the detection output level as dc output. c71 is the smooth ing capacitor. bb_gnd(pin48) bb_v cc (pin53) 71 150 1k 500 800 33k 170k 72 if gnd (if) if gnd continued on next page.
LV25700PM no.a1709-21/68 continued from preceding page. pin name function discription internal equivalent circuit 73 am/fm 1st if mixer amp output output impedance = 330 50 rf_gnd(pin12) rf_v cc (pin2) 73 300 74 if v cc (if) v cc = 5v 75 76 am/fm 1st if mixer amp input am/fm 450khz amp input impedance = 330 75 76 if_gnd(pin12) 300 300 300 77 am rf agc rf agc rectifier capacitor determination of the distortion ratio during low-frequency modulation increase c77: distortion improved response slow decrease c77: distortion worse response quick * same as pin 79. rf_v cc (pin2) if_gnd(pin72) 1k 1k 1k 800k 77 78 hcc control input pin with the pin 78 input voltage, attenuation of the high pass component is controlled. at weak input, high pass is cut to reduce the noise feeling. ? same control for fm/am hcc. ? the f-characteristics are set by changing over the external capacity (pin 51) and internal resistor. ? threshold can be controlled with 5 bits. (fm/am hcc dac). bb_gnd(pin48) bb_gnd(pin48) 50k 1k 50k rf_v cc (pin2) 78 79 am rf agc bypass rf agc rectifier capacitor determination of the distortion ratio during low-frequency modulation increase c77: distortion improved response slow decrease c77: distortion worse response quick * same as pin 77. if_gnd(pin72) 1k 30k 79 80 mixer out2 * see pin 1 description.
LV25700PM no.a1709-22/68 fm/am level diagram fm fe mix_out1 fm_rfdac fm_antdac fm_in1 pm_in2 rf_gnd2 pm_ant_d vco_gnd fm_rfagc am_ifagc 80 1 7 8 9 10 12 14 r10 30 r8 220k r11a 100k r11b 180 c57 1000pf c11a 1000pf l8 fm ant fm_ant gnd_rf gnd_rf r11c 100k r11d 100k c11b 1000pf c11d 1000pf d4 1sv251 c11e 4pf c11c 2pf g2 g1 fet2 3sk263 r7 30k r80 30 c10a 1000pf c7 1000pf c8 0.22 f rf agc keyed agc c10 4pf r10a 100 c11 4pf vcd1 fm_rf vcd3 fm_ant t10 fm_rf c10b 8pf r13 330 c13 0.1 f r9a 30k c9 1000pf c80 0.022 f cf75 cf_10.7m vca vca c2c 0.022 f t80 mix_out2 ift_10.7m 8v w agc n agc 13 11 rf agc ? narrow agc pick up mix out(4bit adj) ? wide agc pick up mix in (10,11pin)(4bit adj) ? keyed agc controls narrow and wide agc (4-bit adjustment) using the s-meter (pin 44). mix image rejection mixer(4bit adj) 1 st if (10.7mhz) fm if 10.7mhz for sd/snc/hcc /keyed 1st if mix2 10.25mhz for mrc/nc/ sa13:d7 fil_vsmon bpf bpf s-meter hpf sa10:d3 hpf_fc if count sa12:d7-4 sig_q level meter fm/am sd rds demod soft control d/a d/a mod afc pll u.det s-meter det det out nc in q_cont mute_count 73 75 70 60 59 55 64 rds_lpf 41 s-meter(sub) 57 s-meter 44 rd_cl 30 rd_da 29 ? s-meter (10.7mhz) ? 2 nd if (450khz) ? bpf (40khz to 180khz automatic control) detection path s-meter sub/det out/afc modulation index ? s-meter for bpf (dedicated to filter adjustment) ? if count freq (10.7mhz) ? if limiter amp ? band sd ? soft mute ? rds decoder
LV25700PM no.a1709-23/68 fm if filter (bpf) 1. detection the following types of detection are performed, and when ther e is a response to any detection, the if filter bandwidth is reduced. when there is no response, the bandwidth remains wide. (-3db bw: 40 to 180khz) (1) modulation index detection: detects the modulation index of the fm det out block (2) neighboring interference detecti on: detects neighboring interference (3) afc detection: detects the afc voltage of the fm det block 2. control the sensitivity of each of the above detection functions is ad justed by bit. control is self-contained within akagi. the control voltage is generated from neighboring interference detection, modulation index detection, and afc detection. thus, ultimately the if filter band is adjusted using a single control voltage. this control voltage varies only the if filter band. the control voltage can be fixed from the main microcontroller, so the 40 to 180khz band can also be adjusted by main microcontroller control. (fine adjustment is possible in approximately 50 steps.) (1) if filter modula tion index detection detection output: detects the audio signal level from ncin (pin 59) lpf fc = 70khz (1st order). the low pass filter is fixed inside the ic. ic internal control is performed so that the modulation index detection function operates at a certain electric field strength or less. (the electric field threshold value can be changed by bit.) when modulation index detection operates, the if filter bandwidth is reduced. the modulation index detection function does not perform control to widen the if filter bandwidth. if1=10.7mhz if2=450khz 1st if bpf filter control s- meter noise cancellar multiplex fc=100k*3 10.25mhz neighboring interference detection control voltage mix2 afc det det out nc in 73 75 60 59 sd/st-ind 27 dc monitor 24 q-out 28 signal quality + - 18 mod_det 1 f 71 fc=70k*1 150 10k hpf=100k*4 lpf =100k*1 70 dc selct sd st modulation index detection
LV25700PM no.a1709-24/68 (2) if filter neighboring interference detection there are two detection block systems. the s-meter ac component is detected in the weak electric field (s-meter voltage = 2v or less), and neighboring interference is detected from det out in the medium electric field or more (s-meter voltage = 2v or more). the detection path is changed inside the ic according to the electric field. s-meter ac component detection only or detout block detection path only can also be changed by bit at all electric fields. the bpf consists of a hpf with fc = 100khz (4th order) and an lpf with fc = 100khz (1st order). the hpf can be selected from 50 or 100khz, and the lpf fc can be lowered by adding a capacity to the s-meter ac (pin 57). (3) if filter afc detection the if filter band is controlled by changing the afc voltage (pin 45). the afc voltage is generated by converting the frequency of fset relative to the if frequency (450khz) to a voltage. neighboring interference detection responds even when th e desired signal and the interference signal are the same level, but afc detection responds when the interference signal level is higher than that of the desired signal. therefore, afc detection is used in an auxiliary manner for portions that cannot be detected by the neighboring interference detection path. if1=10.7mhz if2=450khz 1st if bpf filter control s- meter noise cancellar multiplex fc=100k*3 10.25mhz mix2 afc det det out nc in 73 75 60 59 sd/st-ind 27 dc monitor 24 q-out 28 signal quality + - 18 mod_det 1 f 71 fc=70k*1 150 10k hpf=100k*4 lpf =100k*1 70 dc selct sd st neighboring interference detection control voltage modulation index detection if1=10.7mhz if2=450khz 1st if bpf filter control s- meter noise cancellar multiplex fc=100k*3 10.25mhz mix2 afc det det out nc in 73 75 60 59 sd/st-ind 27 dc monitor 24 q-out 28 signal quality + - 18 mod_det 1 f 71 fc=70k*1 150 10k hpf=100k*4 lpf =100k*1 70 dc selct sd st neighboring interference detection control voltage modulation index detection
LV25700PM no.a1709-25/68 signal quality signal quality uses the same path as neighboring interf erence detection. (the path can be changed by bit.) ? detection block (smeter_ac/detout) switching inside the ic according to the electric field ? smeter_ac detection fixed at all electric fields ? detout detection fixed at all electric fields there are two output systems as follows: ? the neighboring interference detection voltage is compared by the comparator to generate the quality output (q-out: pin 28). ? the neighboring interference detection voltage is output in a linear manner (signal quality: pin 18). signal quality (pin 18) performs dc smoothing using the output impedance (1k ) and an external capacity. this pin voltage is also used to control the if filter, so car e must be taken as the if filter response will become slow if the capacitance value is too large. the s-meter path performs detection from before the bpf (if filter), so there is no difference in the quality output due to filter band fluctuation. the det out (pin 59) path performs detection from after the bpf (if filter), so filter band fluctuation produces a difference in the quality output. (the multipath signal is detected by smeter_ac, so differences do not easily occur in q-out.) if1=10.7mhz if2=450khz 1st if bpf filter control s- meter noise cancellar multiplex fc=100k*3 10.25mhz mix2 afc det det out nc in 73 75 60 59 sd/st-ind 27 dc monitor 24 q-out 28 signal quality + - 18 mod_det 1 f 71 fc=70k*1 150 10k hpf=100k*4 lpf =100k*1 70 dc selct sd st neighboring interference detection control voltage modulation index detection
LV25700PM no.a1709-26/68 am fe 1. am rf agc the am rf agc system comprises two systems: n-agc and w-agc. narrow agc: picks up from the 2 nd mix input. the band to which agc is applied is determined by the bands of the two front-end ceramic filters. wide agc: picks up from the rf block, so agc is applied to a wide bandwidth. am rf agc band characteristics (reference characteristics) 2. am high band cut and detection output level adjustment method the pin 60 am and fm tuner output has an impedance of 12k in am mode and a hundred and several tens of ohms in fm mode. the high band is pre-adjusted by the internal low pass filter (550k /80pf)) and the am detection output level is pre- adjusted by the internal resistor (voltage-divided by 28k ). to further lower the am band, frequency characteristics can be adjusted with capacitor c60. to lower the am detection output level, the level can be adjusted with resistor r60. * the high band and the output level cannot be raised from the initial status. 3. am low band cut adjustment method the am low band frequency characteristics can be adjusted with capacitor c66, which is inserted between pin 66 and gnd. fc = 1/[2 1k c56] * in fm mode this is shar ed with pilot det, so a capacitance value less than 0.47 f cannot be set. mix_out1 am_mix_in1 rf_v cc _8v am_mix_in2 am_rfagc am_att rf_gnd2 80 1 2 12 d3 15sv251 r80 30 c3 0.1 f rf agc c4a 0.22 f gnd_rf l_am2 30m l_am1 6.8 f l_am3 1m l_am4 47 f am_rf_in r6 470 c6 0.022 f c5b 0.022 f r5 100k r2 680 d fet1 cpm5905 c80 0.022 f c75 cf_10.7m vca vca 10.7mhz c4b 36pf c4c 15pf t80 mix_out2 79 rfagc_in bypass c79 1 f 78 hcc_cont c78 1 f 77 am_rf_agc c77 1 f ift_10.7m 8v w agc n agc 6 3 4 5 300 28k 12k 550k c60 r60 100 100 100 100 fm out am out 300 if_gnd(pin72) rf_v cc (pin2) 80pf 60 if amp am det if agc am_lc_amp pilot det 80pf c66 det out am lc 100 1.4k 1k 550k 1 3 2 1k 1k 1k seek_on 1k 10 100 + - 1 3 2 + - 60 66 c65 if agc_lpf 65 --500 --400 --300 --200 --100 0 100 70 75 80 85 90 95 100 200 300 400 500 agc ant level vs. delta frequency center frequency = 1mhz delta frequency, khz agc on level, db v narrowe agc wide agc band: determined by the ceramic filter bands.
LV25700PM no.a1709-27/68 am if agc the am if agc gain is controlled by the pin 44 dc voltage. if agc time constant switching circuit this circuit prevents the system from erroneously stop ping (or passing through) caused by s-meter oscillation due to transient response of if agc (2nd order filter) in seek mode. reception mode: 2nd order filter consisting of c at pin 65 and pin 66. seek mode: the internal transistor turns on and a first order filter is formed by 110 and c65. am s-meter the am s-meter has two systems: ac and dc. s-meter (ac): picks up from the 10.7mhz path. the band is determined by the ceramic filter, and the s-meter is used as am nc pulse detection. the output is pin 57, and the ac component is determined by the external capacity value. (in fm mode, s-meter operates linked to the fm nc, mrc and neighboring interference (if filter). s-meter (dc): picks up from the 450khz path. the band is determined by the 450khz ceramic filter, and the s- meter is used for am sd and am hcc. the output is pin 44, and the signal is converted to a dc voltage according to the external capacity value. (in fm mode, s-meter operates linked to the fm sd, fm snc, fm hcc and fm mute.) the s-meter (ac) can be adjusted by s- meter shift. at input levels above 20db the gain is lowered by a limiter amplifier to prevent am nc detection errors. the recommended setting is 29. mix2 1st if vca 10.7mhz if agc amp sa15 am if gain am_lc det out 10.25mhz 70 70 62 66 60 lpf 65 if agc s-meter sa21 am vsm shift sa22 fm if sgain s-meter(sub) am_att am_rfagc 10.7mhz 8 44 57 68 det rf agc w agc n agc if agc am s-meter s-meter sa11 vsm shift 73 6 5 am on am_off
LV25700PM no.a1709-28/68 mixer/vco/pll c18 150pf c3 0.1 f c17 3pf c16 2pf c16b 27pf c16a 4pf vcd2 svc704 l16 l_osc r18 33k c22 0.015 f 100 c22b 1000pf r22 3.3k charge pump phase detecter x'tal osc reference counter program counter 39 38 22 c21 0.22 f 100 cpam cpfm fetgnd vt osc2 osc1 r21 2.7k 21 100 am_off v cc 8v 100 10k 3k 20 17 16 11 10 4 3 19 23 rf_gnd fm_mix_in1fm_mix_in1 fm_mix_in2fm_mix_in2 am_mix_in2 am_mix_in1 2 rf_v cc _8v 1 1 mix_out1 mix_out2 12 osc 90 1/2 am 1/4,1/6 1/8,1/10 fm 1/1 1/2,1/3 ? vco (twofold oscillation/150mhz to 260mhz) oscillation driven by the external inductor and varactor diode ? frequency division fm weather (1/1) fm usa/eur (1/2) fm japan (1/3) am (1/8, 1/12, 1/16, 1/20) fm osc frequencies vs. frequency division ratios destination rf frequency range (khz) channel step (khz) reference frequency (khz) frequency division ratio usa 87.9 to 108.1 200 100 2 europe 87.5 to 108.0 50 100 2 east europe 64 to 74 10 10 3 japan 76 to 90 100 100 3 weather band 162.4 to 162.55 25 25 1 am osc mw rf frequency range (khz) channel step (khz) reference frequency (khz) frequency division ratio usa 520 to 1710 10 10 20 (am/fm: 1/2 am: 1/10) europe 522 to 1611 9 10 20 (am/fm: 1/2 am: 1/10) japan 522 to 1629 9 10 20 (am/fm: 1/2 am: 1/10) lw rf frequency range (khz) channel step (khz) reference frequency (khz) frequency division ratio europe 146 to 281 1 10 20 (am/fm: 1/2 am: 1/10) sw rf frequency range (khz) channel step (khz) reference frequency (khz) frequency division ratio sw1 2.28 to 6.23 5 5 12 (am/fm: 1/2 am: 1/6) sw2 7.1 to 10.5 5 5 12 (am/fm: 1/2 am: 1/6) sw3 10.55 to 18 5 5 12 (am/fm: 1/2 am: 1/4) * the setting of the frequency division ratio may differ due to the varactor and coil used in osc.
LV25700PM no.a1709-29/68 fm noise cancellar fm noise canceller detection is performed using two sy stems (pin 57 (s-meter ac), pin 59 (nc in)) as a countermeasure against operation errors due to the weak el ectric field nc sensitivity setting. the detection path is switched according to the electric field by the s-meter (dc) (pin 44). fm nc operation can be monitored by the pin 24 trigger out. electric field strength (weak to medium) medium to strong pin 57 (s-meter ac) detection: on on pin 59 (cn in): off on description of fm nc functions sa : d recommended setting description of functions sa24 d2 nose-agc th. forced noise agc [1]force noise agc 0: fixes the noise detection sensitivity. 1: uses noise agc in the forcibly applied state. the noise detection sensitivity can be adjusted by dac (sa09, d0 to d4) control. sa18 d6-d7 noise-sens. nc load switching [0] 15k the noise detection sensitivity is adjusted by switching the noise amplifier output load. sa10 d1 ac s-meter nc sensitivity switching (fixed to normal) [0] 54k reduces the ac-s-meter internal load re sistance value by approximately half. (54k //60k 27k //60k ) 0: normal (internal load = 54k //60k ) 1: on (internal load = 27k //60k ) however, note that in fm mode the mrc and if filter also operate by detecting the ac component of the same pin (ac_vsm) , so these functions are affected by this bit. this is valid only in reception mode. however, it is invalid when sa24 d2 is set to off (normal). sa09 d0-d4 nc sens main adjusting the nc noise detection sensitivity [18] when sa24 d2 is on increasing the dac setting increases the comparator threshold voltage, and worsens the noise detec tion sensitivity. conversely, reducing the dac setting enhances the detection sensitivity. (however, reducing the dac setting by too much increases the chances of operation errors.) 27k 27k 60k 6k fc=100khz att noise amp noise det noise agc hpf (cr, primary) hpf (cr, primary) dc- moni pilot-cancel (from mpx block) lpf (for signal delay) copm 60 24 ac s-meter 57 noise agc s-meter 44 + - copm to mpx buff nc_hold + - zin=50k c48 1 f nc_in detout fm/am det mix2 10.7m cf vsm current output 10.7m limmit amp + - nc stop gate time control (fm) gate time control (am) copm sa24 forcenoagc sa19 noise_sens_main sa10 ac smeter sw sa19 am nc stop sa20 am nc gate time + - 59 47 buff
LV25700PM no.a1709-30/68 am nc block this block detects noise from the 10.7 mhz cf out, turns off the am demodulated signal waveform only during the period affected by noise, and holds the dc. the detection path is the one system of pin 40 (s-meter ac). am nc operation can be monitored by the pin 24 trigger out. the pin 47 external constant is determined by the fm nc with priority. sa:d recommended setting description of functions sa24 d2 nose-agc th. forced noise agc [1]force noise agc 0: fixes the noise detection sensitivity. 1: uses noise agc in the forcibly applied state. the noise detection sensitivity can be adjusted by dac (sa09, d0 to d4) control. sa22 d4-d7 fifgain [9] sets the if limiter amplifier gain. increasing the dac setting increases the gain. reducing the dac setting reduces the gain. sa11 d0-d4 s-meter shift [29] hides the noise detected by vsmac. increasing the dac setting increases the shift amount. reducing the dac setting reduces the shift amount. reducing the shift amount enhances the e ffects during weak input, but also increases the chances of operation errors due to weak input noise. sa10 d1 ac s-meter nc sensitivity switching [1] 27k reduces the ac-s-meter internal load re sistance value by approximately half. (54k //60k 27k //60k ) 0: normal (internal load = 54k //60k ) 1: on (internal load = 27k //60k ) however, note that in fm mode the mrc and if filter also operate by detecting the ac component of the same pin (ac_vsm), so these functions are affected by this bit. sa18 d6-d7 noise-sens. nc load switching [2] 6k the noise detection sensitivity is adjusted by switching the noise amplifier output load. this is valid only in reception mode. however, it is invalid when sa24 d2 is set to off (normal). sa09 d0-d4 nc sens main adjusts the nc noise detection sensitivity [15] when sa24 d2 is on increasing the dac setting increases the comparator threshold voltage, and worsens the noise detec tion sensitivity. conversely, reducing the dac setting enhances the detection sensitivity. (however, reducing the dac setting by too much increases the chances of operation errors.) sa19 d0-d4 am nc stop [31] can be set to operate only at weak input (forced off at strong input). increasing the dac setting operates up to strong input. reducing the dac setting operates only at weak input. sa20 d2-d7 am nc gate [12] 430 sec (reference value) can set the gate time. increasing the dac setting shortens the gate time. reducing the dac setting lengthens the gate time. sa24 d6 am nc off [0] can forcibly set am nc to off. 0 = on normal operation 1 = off forcibly off * am nc on/off can be set by the dac [am nc off]. * the nc sensitivity coarse adjustment can be set by the dac [ac_ smeter sw] and the dac [noise-sens]. * the nc sensitivity fine adjustment can be set by the da c [nc sens main], the dac [s-meter shift] and the dac [fm if gain]. * the gate time can be set by the dac [am nc gate]. the ant-ib-level range at which am nc turns on can be set by the dac [am nc stop]. (am nc can be turned off at medium and strong input.)
LV25700PM no.a1709-31/68 stereo decoder sa:d recommended setting description of functions sa18 d0-d5 mpv vco fm:* optimum value: set so that th e free-running frequency (vco frequency under no- modulation conditions) is near 304 khz (adjust to within 2khz). * set vco on (sa24: d4) to [1] during adjustment. sa26 d6 force mono [0] 0 = normal: normal mode, 1 = force mono: forced monaural sa17 d0-d5 separation control process adjustment required optimum value: adjust to maximize separation at the standard electric field input. sa24 d3 st-sens adj fm:[0] 0 = off (normal), 1 = on (st on sensitivity increased) when set to on, the st on sensitivity (on/off) is increased by approximately 1% compared to when set to off. sa17 d6-d7 pi-can(pilot cancel level control) fm:[0] [pi-can] typical value: center (process adjustment optional) sa25 d0-d4 snc dac/am-rf-agc amp threshold value (steep slope side) fm: am:[0] [snc dac] adjust to the specified separation at medium electric field input. [am-rf-agc] optimum value: fix to [0]. sa25 d5-d6 snc slope small bit value: gentle slope, large bit value: steep slope * if the value is too small, sep operati on may be performed even at weak electric field input, resulting in a deteriorated st s/n ratio. sa26 d7 de-emphasis set according to the destination. 0: 50 sec [jpn], 1: 75 sec [us] sa26 d0-d4 fm/am hcc dac fm:* am:[12] optimum value: adjust to the specified fr equency characteristics at weak electric field input. sa47 d5 hcc sw fm:[6] am:[3] the hcc frequency characteristics is set by the pin 51 external capacity value and the internal resistor (adjustable). optimum value: fm mode = [6], am mode = [3] fm mode = 6: hcc cutoff fc = 2.2khz (when c51 = 2,200pf) am mode = 3: hcc cutoff fc = 800hz (when c51 = 2,200pf) sa24 d4 vco on [0] 0: normal mode, 1: mpx-vco monitor test mode [pin 24 frequency measurement] (in mpx-vco monitor mode: set dc select sa09, d5 to d7 to sd/mpx vco out.) s- meter mrc sub dec 50 f 75 f sw mat rix snc hcc 10k 60 from nc from nc lpf chcc 60 separation 60 mpx_in pilot_det dc-monitor phase comp phase comp sa25 snc_dac sa25 snc slope sa26 hcc_dac sa26 deempsw sa17 sepd sa18 mpxvco sa26 mo_st_sw sa24 st_sens_adj sa17 pican s-meter 44 80k hcc_cont 78 l_out 49 r_out 50 50k 50k ff 19k<90 ff 19k<0 ff 38k<90 ff 38k<0 ff 76k<90 ff phase comp pilot det dc- moni pilot cancel to nc mpx vco sep adj sa47 hcc_sw main hc 66 24 55 54
LV25700PM no.a1709-32/68 mrc the mrc (multipath rejection circuit) controls multipath noise by detecting the ac component of the if s-meter (ac). it consists of a noise amplifier and a detection circuit. ? noise amplifier gain the noise amplifier gain of the pin 58 input is determined by the r2 and r1 resistors. (the gain can be lowered by adding an external resistor.) the gain can be further adjusted in fo ur steps by the mrc sens dac. the high band frequency characteristics can be adjusted by c57. sa:d recommended setting description of functions sa21 d0-d1 mrc sensitivity * optimum value: according to the specifications. setting a smaller value enhances the sens itivity and increases the mrc amplifier gain. setting a larger value worsens the sens itivity and reduces the mrc amplifier gain. sa21 d2-d3 mrc time constant (attack/release time) * sets the recovery time constant w hen the multipath countermeasure circuit operates. (time from the mono status to st recovery) setting a smaller value shortens the reco very time, and setting a larger value lengthens the recovery time. ? detection circuit mrc the time constant used to control separation is as follows. discharge: determined by 100 and c56. charge: determined by i56 and c56. * i56 can be set in four steps by the mrc time constant dac. mrc time constant (reference values) dac c56 charge time discharge time mrc_time_constant = 0 1 f 360ms 0.63ms mrc_time_constant = 1 1 f 515ms 0.63ms mrc_time_constant = 2 1 f 890ms 0.63ms mrc_time_constant = 3 1 f 4.5s 0.63ms dac c56 charge time discharge time mrc_time_constant = 0 0.47 f 215ms 0.5ms mrc_time_constant = 0 1 f 360ms 0.63ms mrc_time_constant = 0 2 f 790ms 0.9ms s- meter detection circuit sa10 ac smeter sw s-meter refrence voltage sa21 mrcsens sa21 t_const + - snc buff 57 58 5.3k 68k r1 60k 27k 27k 30k 10k 80k r2 c57 mrc_in s-meter sub 56 mrc_time v cc 1 2 3 + - 1 3 2 500 100 80k 10k mrc time constant dac v cc (pin53) v cc (pin53) buff c56 i56 mpx snc 58
LV25700PM no.a1709-33/68 bit specifications slave address: msb lsb a7 a6 a5 a4 a3 a2 a1 a0 function 1 1 1 0 1 1 1 0 write mode 1 1 1 0 1 1 1 1 read mode sub address: msb lsb a7 a6 a5 a4 a3 a2 a1 a0 function 0 0 0 0 0 0 0 1 sa1 0 0 0 0 0 0 1 0 sa2 0 0 0 0 0 0 1 1 sa3 0 1 0 1 1 1 0 1 sa93 0 1 0 1 1 1 1 0 sa94 0 1 0 1 1 1 1 1 sa95 * continuous write is possible from an arbitrary sub address (e.g. sa12 to sa23). * restart is prohibited: after the stop condition is ge nerated, always start again from the start condition. s s start condition s = start p = stop ack = acknowledge r/w = read / write 1110111r/w msb lsb slave address ack a7 a6 a5 a4 a3 a2 a1 a0 ack data ack p msb lsb sub address msb lsb data1-datan p stop condition sda scl sda scl s 12 89 start condition dataoutput by transmitter dataoutput by receiver scl from master clock pulse for acknowledgement acknowledge not acknowledge
LV25700PM no.a1709-34/68 scl/sda bus line characteristics item symbol conditions min typ max unit scl clock frequency fscl 0 100 khz start condition hold time thd;sta 4.0 s stop condition setup time tsu;sto 4.0 s scl clock low period tlow 4.7 s scl clock high period thigh 4.0 s sda and scl signal rise time tr 1000 ns sda and scl signal fall time tf 300 ns data hold time thd;dat 0 2.7 s data setup time tsu;dat 1 s time from the previous stop condition until the next start condition is generated tbuf busy = 0 to output low level input voltage v il 0 0.3v dd v high level input voltage v ih 0.7v dd v dd v *1: the values specified by no .1 to no.9 are the values wh en operating at scl = 100khz. *2: no.10 is limited to the case when sa 7 d7 and d6 are set to ?01? or ?11?. *3: the v dd noted in no.11 and no.12 indicates the pin 34 busv dd . *4: i 2 c recommended operation: using sa03 d1 bit i 2 c ck low drive. tbuf tr tlow thd;sta tsu;sto p tsu;sta tsu;dat thigh thd;dat thd;sat s tf sda scl tf tr sr
LV25700PM no.a1709-35/68 bit map(es9) sa sub address d7 d6 d5 d4 d3 d2 d1 d0 1 00000001 p15 p14 p13 p12 p11 p10 p9 p8 2 00000010 p7 p6 p5 p4 p3 p2 p1 p0 3 00000011 r3 r2 r1 r0 ult rds_on i2c_sck_ld - 4 00000100 amfm weather osc_div1 osc_di v0 seek1 seek0 tuner_off iq_up_low 5 00000101 rf_dac7 rf_dac6 rf_d ac5 rf_dac4 rf_dac3 rf _dac2 rf_dac1 rf_dac0 6 00000110 ant_dac7 ant_dac6 ant_dac5 ant_dac4 ant_dac3 ant_dac2 ant_dac1 ant_dac0 7 00000111 ul/ifend busy dz1 dz0 cte gt2 gt1 gt0 8 00001000 - - - - - - - div_sw 9 00001001 dcselct2 dcselct1 dcselct0 nc_sens main4 nc_sens main3 nc_sens main2 nc_sens main1 nc_sens main0 10 00001010 fil_sens3 fil_sens 2 fil_sens 1 fil_ sens0 hpf_fc in_detoff ncsense dac_9off 11 00001011 in_deton amagc_on fmagc_on s_mete r4 s_meter3 s_meter2 s_meter1 s_meter0 12 00001100 sig_q3 sig_q2 sig_q1 sig_q0 qd p_adj3 qdp_adj2 qd p_adj1 qdp_adj0 13 00001101 fil_vsmon - cf_adj_d5 cf_adj_d4 cf_adj_d3 cf_adj_d2 cf_adj_d1 cf_adj_d0 14 00001110 - - bwd_adj_d5 bwd_adj_d4 bwd_adj_d3 bw d_adj_d2 bwd_adj_d1 bwd_adj_d0 15 00001111 key_agc3 key_agc2 key_agc1 key_agc 0 irr_vg3 irr_vg2 irr_vg1 irr_vg0 16 00010000 null5 null4 null3 null2 null1 null0 0 0 17 00010001 pican1 pican0 sepd5 sepd4 sepd3 sepd2 sepd1 sepd0 18 00010010 noise_sen1 noise_sen0 mpxvco_5 mpxv co_4 mpxvco_3 mpxvco_2 mpxvco_1 mpxvco_0 19 00010011 - - - am_nc_stop4 am_nc_stop3 am_nc_stop2 am_nc_stop1 am_nc_stop0 20 00010100 muteatt5 muteatt4 muteatt3 muteatt2 muteatt1 muteatt0 mo ni mode rev mode 21 00010101 - - amvsm_shift1 amvsm_shift0 t_const1 t_const0 mrcsense1 mrcsense0 22 00010110 fifgain3 fifgai n2 fifgain1 fifgai n0 amrfagc3 amrfagc2 amrfagc1 amrfagc0 23 00010111 w_agc3 w_agc2 w_agc1 w_agc0 n_agc3 n_agc2 n_agc1 n_agc0 24 00011000 mslope am_nc_off - vco_on st_sens_adj forcenoagc - - 25 00011001 dtestsw sncinc1 snci nc0 snc_dac4 snc_dac3 snc_ dac2 snc_dac1 snc_dac0 26 00011010 deempsw mo_st_sw irr_sw hcc_ dac4 hcc_dac3 hcc_dac2 hcc_dac1 hcc_dac0 27 00011011 - - - fm_pind_off - - - ift_trans 28 00011100 - - - seek_sd_on4 seek_sd_on3 seek_sd_on2 seek_sd_on1 seek_sd_on0 29 00011101 seek_sd_bw3 seek_sd_bw2 seek_sd_bw1 seek_sd_bw0 - - - - 30 00011110 - - - - - - - - 31 00011111 qo_unddet_7 qo_unddet_6 qo_unddet_5 qo_unddet_4 qo_unddet_3 qo_unddet_2 qo_unddet_1 qo_unddet_0 32 00100000 qo_afc_max_7 qo_afc_max_6 qo_afc_max_5 qo_afc_max_4 q o_afc_max_3 qo_afc_max_2 qo_afc_max_1 qo_afc_max_0 33 00100001 qo_afc_min_7 qo_afc_min_6 qo_afc_min_5 qo_afc_min_4 qo_afc_min_3 qo_afc_min_2 qo_afc_min_1 qo_afc_min_0 34 00100010 qo_afcuse mute_tc_up_2 mute_tc_up_1 mute_tc_up_0 - mute_tc_down_2 mute_tc_down_1 mute_tc_down_0 35 00100011 mute_smr_slc_7 mute_smr_slc_6 mute_smr_s lc_5 mute_smr_slc_4 mute_smr_slc_3 mute_s mr_slc_2 mute_smr_slc_1 mute_smr_slc_0 36 00100100 mute_smr_zero_7 mute_smr_zero_6 mute_smr_zero_5 mute_smr_zero_4 mute_smr_zero_3 mute_smr_zero_2 mute_smr_zero_1 mute_smr_zero_0 37 00100101 bpf_mod_max_7 bpf_mod_max_6 bpf_mod_max_5 bpf_mod_max_4 bpf_mod_max_3 bpf_mod_max_2 bpf_mod_max_1 bpf_mod_max_0 38 00100110 bpf_mod_min_7 bpf_mod_min_6 bpf_mod_min_5 bpf_mod_min_4 bpf_mod_min_3 bpf_mod_min_2 bpf_mod_min_1 bpf_mod_min_0 39 00100111 bpf_smr_max_7 bpf_smr_max_6 bpf_smr_m ax_5 bpf_smr_max_4 bpf_smr_max_3 bpf_s mr_max_2 bpf_smr_max_1 bpf_smr_max_0 40 00101000 bpf_smr_min_7 bpf_smr_min_6 bpf_smr_m in_5 bpf_smr_min_4 bpf_smr_min_3 bpf_s mr_min_2 bpf_smr_min_1 bpf_smr_min_0 41 00101001 bpf_limit_7 bpf_limit_6 bpf_li mit_5 bpf_limit_4 bpf_li mit_3 bpf_limit_2 bpf _limit_1 bpf_limit_0 42 00101010 bpf_fix_7 bpf_fix_6 bpf_fix_5 bpf_fix _4 bpf_fix_3 bpf_fix_2 bpf_fix_1 bpf_fix_0 43 00101011 bpf_fix bpf_tc _2 bpf_tc_1 bpf_tc_0 - - bpf_slope_1 bpf_slope_0 44 00101100 afc_max_7 afc_ max_6 afc_ max_5 afc_m ax_4 afc_max_3 afc_max_2 afc_max_1 afc_max_0 45 00101101 afc_min_7 afc_min_6 afc_ min_5 afc_min_4 afc_min_3 afc _min_2 afc_min_1 afc_min_0 46 00101110 - - - - - - - - 47 00101111 rds_afc - hcc_sw3 hcc_sw2 hcc_sw1 - - - 48 00110000 - - - - - s_meter_int_p rf_int_p irr_int_p 49 00110001 - - - - - - - - 50 00110010 rds_qo_udet_7 rds_qo_udet_6 rds_qo_ud et_5 rds_qo_udet_4 rds_qo_udet_3 rds_q o_udet_2 rds_qo_udet_1 rds_qo_udet_0
LV25700PM no.a1709-36/68 sa sub address d7 d6 d5 d4 d3 d2 d1 d0 51 00110011 rf_dac_p0_7 rf_dac_p0_6 rf_d ac_p0_5 rf_dac_p0_4 rf_dac_p0_3 rf _dac_p0_2 rf_dac _p0_1 rf_dac_p0_0 52 00110100 rf_dac_p1_7 rf_dac_p1_6 rf_d ac_p1_5 rf_dac_p1_4 rf_dac_p1_3 rf _dac_p1_2 rf_dac _p1_1 rf_dac_p1_0 53 00110101 rf_dac_p2_7 rf_dac_p2_6 rf_d ac_p2_5 rf_dac_p2_4 rf_dac_p2_3 rf _dac_p2_2 rf_dac _p2_1 rf_dac_p2_0 54 00110110 rf_dac_p3_7 rf_dac_p3_6 rf_d ac_p3_5 rf_dac_p3_4 rf_dac_p3_3 rf _dac_p3_2 rf_dac _p3_1 rf_dac_p3_0 55 00110111 rf_dac_p4_7 rf_dac_p4_6 rf_d ac_p4_5 rf_dac_p4_4 rf_dac_p4_3 rf _dac_p4_2 rf_dac _p4_1 rf_dac_p4_0 56 00111000 rf_dac_p5_7 rf_dac_p5_6 rf_d ac_p5_5 rf_dac_p5_4 rf_dac_p5_3 rf _dac_p5_2 rf_dac _p5_1 rf_dac_p5_0 57 00111001 rf_dac_p6_7 rf_dac_p6_6 rf_d ac_p6_5 rf_dac_p6_4 rf_dac_p6_3 rf _dac_p6_2 rf_dac _p6_1 rf_dac_p6_0 58 00111010 rf_dac_p7_7 rf_dac_p7_6 rf_d ac_p7_5 rf_dac_p7_4 rf_dac_p7_3 rf _dac_p7_2 rf_dac _p7_1 rf_dac_p7_0 59 00111011 ant_dac_p0_7 ant_dac_p0_6 ant_dac_p0_5 ant_dac_p0_4 ant_dac_p0_3 ant_dac_p0_2 ant_dac_p0_1 ant_dac_p0_0 60 00111100 ant_dac_p1_7 ant_dac_p1_6 ant_dac_p1_5 ant_dac_p1_4 ant_dac_p1_3 ant_dac_p1_2 ant_dac_p1_1 ant_dac_p1_0 61 00111101 ant_dac_p2_7 ant_dac_p2_6 ant_dac_p2_5 ant_dac_p2_4 ant_dac_p2_3 ant_dac_p2_2 ant_dac_p2_1 ant_dac_p2_0 62 00111110 ant_dac_p3_7 ant_dac_p3_6 ant_dac_p3_5 ant_dac_p3_4 ant_dac_p3_3 ant_dac_p3_2 ant_dac_p3_1 ant_dac_p3_0 63 00111111 ant_dac_p4_7 ant_dac_p4_6 ant_dac_p4_5 ant_dac_p4_4 ant_dac_p4_3 ant_dac_p4_2 ant_dac_p4_1 ant_dac_p4_0 64 01000000 ant_dac_p5_7 ant_dac_p5_6 ant_dac_p5_5 ant_dac_p5_4 ant_dac_p5_3 ant_dac_p5_2 ant_dac_p5_1 ant_dac_p5_0 65 01000001 ant_dac_p6_7 ant_dac_p6_6 ant_dac_p6_5 ant_dac_p6_4 ant_dac_p6_3 ant_dac_p6_2 ant_dac_p6_1 ant_dac_p6_0 66 01000010 ant_dac_p7_7 ant_dac_p7_6 ant_dac_p7_5 ant_dac_p7_4 ant_dac_p7_3 ant_dac_p7_2 ant_dac_p7_1 ant_dac_p7_0 67 01000011 - - - smeter_p0_4 smeter_p0_3 smet er_p0_2 smeter_p0_1 smeter_p0_0 68 01000100 - - - smeter_p1_4 smeter_p1_3 smet er_p1_2 smeter_p1_1 smeter_p1_0 69 01000101 - - - smeter_p2_4 smeter_p2_3 smet er_p2_2 smeter_p2_1 smeter_p2_0 70 01000110 - - - smeter_p3_4 smeter_p3_3 smet er_p3_2 smeter_p3_1 smeter_p3_0 71 01000111 - - - smeter_p4_4 smeter_p4_3 smet er_p4_2 smeter_p4_1 smeter_p4_0 72 01001000 - - - smeter_p5_4 smeter_p5_3 smet er_p5_2 smeter_p5_1 smeter_p5_0 73 01001001 - - - smeter_p6_4 smeter_p6_3 smet er_p6_2 smeter_p6_1 smeter_p6_0 74 01001010 - - - smeter_p7_4 smeter_p7_3 smet er_p7_2 smeter_p7_1 smeter_p7_0 75 01001011 - - - - - - - - 76 01001100 - - - - - - - - 77 01001101 - - - - - - - - 78 01001110 - - - - - - - - 79 01001111 - - - - - - - - 80 01010000 af_p15 af_p14 af_p13 af_p 12 af_p11 af_p10 af_p9 af_p8 81 01010001 af_p7 af_p6 af_p5 af_p 4 af_p3 af_p2 af_p1 af_p0 82 01010010 af_rfd7 af_rfd6 af_r fd5 af_rfd4 af_rfd3 af _rfd2 af_rfd1 af_rfd0 83 01010011 af_antd7 af_antd6 af_antd5 af_antd4 af_antd3 af_antd2 af_antd1 af_antd0 84 01010100 - - - - - - - - 85 01010101 - - - - - - - - 86 01010110 - - - - - - - - 87 01010111 - - - - - - - - 88 01011000 - - - - - - - - 89 01011001 - - - - - - - - 90 01011010 - - - - - - - - 91 01011011 - - - - - - - - 92 01011100 - - - - - - - - 93 01011101 custom_code_7 custom_code_6 custom_code_5 custom_code_4 custom_code_3 custom_code_2 custom_code_1 custom_code_0 94 01011110 area_code3 area_code2 area_code1 area_code 0 align_no3 align_no2 align_no1 align_no0 95 01011111 check_sum7 check_sum6 check_sum5 check_sum 4 check_sum3 check_sum2 check_sum1 check_sum0
LV25700PM no.a1709-37/68 special commands (sa248 and sa252 are 3 bytes, other commands have no data.) sa sub address d7 d6 d5 d4 d3 d2 d1 d0 248 11111000 write_id2 write_id1 write_id 0 flash memory write mode set 249 11111001 rds mute on 250 11111010 rds mute off 251 11111011 flash memory default 252 11111100 write_id2 write_id1 write_id0 flash memory write 253 11111101 normal frequency change(sa01,sa02,sa05) for rds af search 254 11111110 af frequency change(sa80,sa81,sa82) for rds af search 255 11111111 firmware version information
LV25700PM no.a1709-38/68 bit map (fm initial data) sa sub address d7 d6 d5 d4 d3 d2 d1 d0 1 00000001 0 0 0 0 1 0 0 0 2 00000010 1 0 0 0 0 0 0 0 3 00000011 1 1 0 0 0 0 0 0 4 00000100 0 0 0 0 0 1 0 0 5 00000101 1 0 0 1 1 0 1 0 6 00000110 * * * * * * * * 7 00000111 0 1 0 1 0 0 1 1 8 00001000 0 0 0 0 0 0 0 0 9 00001001 1 0 0 1 0 0 1 0 10 00001010 0 1 0 1 0 0 0 0 11 00001011 0 0 0 * * * * * 12 00001100 1 0 1 0 0 1 1 0 13 00001101 0 0 * * * * * * 14 00001110 0 0 * * * * * * 15 00001111 0 1 0 0 1 0 0 1 16 00010000 * * * * * * 0 0 17 00010001 * * * * * * * * 18 00010010 0 0 * * * * * * 19 00010011 0 0 0 0 0 0 0 0 20 00010100 1 1 1 1 1 1 0 0 21 00010101 0 0 1 0 1 1 0 1 22 00010110 1 0 1 0 1 1 0 0 23 00010111 0 1 1 0 0 0 1 1 24 00011000 0 0 0 0 0 1 0 0 25 00011001 0 1 0 * * * * * 26 00011010 1 0 0 0 1 1 1 0 27 00011011 0 0 0 0 0 0 0 1 28 00011100 0 0 0 * * * * * 29 00011101 0 1 0 1 0 0 0 0 30 00011110 0 0 0 0 0 0 0 0 31 00011111 0 0 0 0 1 0 1 1 32 00100000 1 0 1 0 0 1 1 0 33 00100001 0 1 1 1 0 0 1 1 34 00100010 0 0 0 0 0 0 0 0 35 00100011 * * * * * * * * 36 00100100 * * * * * * * * 37 00100101 0 0 0 0 0 0 0 0 38 00100110 0 0 0 0 0 0 0 0 39 00100111 0 0 0 0 0 0 0 0 40 00101000 0 0 0 0 0 0 0 0 41 00101001 1 1 1 1 1 1 1 1 42 00101010 0 0 0 0 0 0 0 0 43 00101011 0 0 0 0 0 0 1 0 44 00101100 1 0 1 0 0 1 1 0 45 00101101 0 1 1 1 0 0 1 1 46 00101110 0 0 0 0 0 0 0 0 47 00101111 1 0 1 1 0 0 0 0 48 00110000 0 0 0 0 0 0 0 0 49 00110001 0 0 0 0 0 0 0 0 50 00110010 0 0 0 0 1 0 1 1
LV25700PM no.a1709-39/68 sa sub address d7 d6 d5 d4 d3 d2 d1 d0 51 00110011 0 0 0 0 0 0 0 0 52 00110100 0 0 0 0 0 0 0 0 53 00110101 0 0 0 0 0 0 0 0 54 00110110 0 0 0 0 0 0 0 0 55 00110111 0 0 0 0 0 0 0 0 56 00111000 0 0 0 0 0 0 0 0 57 00111001 0 0 0 0 0 0 0 0 58 00111010 0 0 0 0 0 0 0 0 59 00111011 0 0 0 0 0 0 0 0 60 00111100 0 0 0 0 0 0 0 0 61 00111101 0 0 0 0 0 0 0 0 62 00111110 0 0 0 0 0 0 0 0 63 00111111 0 0 0 0 0 0 0 0 64 01000000 0 0 0 0 0 0 0 0 65 01000001 0 0 0 0 0 0 0 0 66 01000010 0 0 0 0 0 0 0 0 67 01000011 0 0 0 0 0 0 0 0 68 01000100 0 0 0 0 0 0 0 0 69 01000101 0 0 0 0 0 0 0 0 70 01000110 0 0 0 0 0 0 0 0 71 01000111 0 0 0 0 0 0 0 0 72 01001000 0 0 0 0 0 0 0 0 73 01001001 0 0 0 0 0 0 0 0 74 01001010 0 0 0 0 0 0 0 0 75 01001011 0 0 0 0 0 0 0 0 76 01001100 0 0 0 0 0 0 0 0 77 01001101 0 0 0 0 0 0 0 0 78 01001110 0 0 0 0 0 0 0 0 79 01001111 0 0 0 0 0 0 0 0 80 01010000 0 0 0 0 0 0 0 0 81 01010001 0 0 0 0 0 0 0 0 82 01010010 0 0 0 0 0 0 0 0 83 01010011 0 0 0 0 0 0 0 0 84 01010100 0 0 0 0 0 0 0 0 85 01010101 0 0 0 0 0 0 0 0 86 01010110 0 0 0 0 0 0 0 0 87 01010111 0 0 0 0 0 0 0 0 88 01011000 0 0 0 0 0 0 0 0 89 01011001 0 0 0 0 0 0 0 0 90 01011010 0 0 0 0 0 0 0 0 91 01011011 0 0 0 0 0 0 0 0 92 01011100 0 0 0 0 0 0 0 0 93 01011101 0 0 0 0 0 0 0 0 94 01011110 0 0 0 1 0 0 1 1 95 01011111 * * * * * * * * green *: fm adjustment orange : users should readjust as necessary. asterisks indicate items th at are already adjusted in sanyo semiconductor?s tester proces s. other parameters (sa) also require readjustment when used outside sanyo semiconduct or?s recommended settings. gray 0: system reserved
LV25700PM no.a1709-40/68 bit map (am initial data) sa sub address d7 d6 d5 d4 d3 d2 d1 d0 1 00000001 0 1 0 1 1 0 1 1 2 00000010 0 1 1 0 1 0 0 0 3 00000011 0 1 1 1 0 0 0 0 4 00000100 1 0 0 0 0 1 0 0 5 00000101 0 0 0 0 0 0 0 0 6 00000110 0 0 0 0 0 0 0 0 7 00000111 0 1 0 1 0 0 1 1 8 00001000 0 0 0 0 0 0 0 0 9 00001001 1 0 0 0 1 1 1 1 10 00001010 0 0 0 0 0 0 1 0 11 00001011 0 0 0 1 1 1 0 1 12 00001100 0 0 0 0 0 0 0 0 13 00001101 0 0 0 0 0 0 0 0 14 00001110 0 0 0 0 0 0 0 0 15 00001111 0 1 0 1 0 0 0 0 16 00010000 0 0 0 0 0 0 0 0 17 00010001 0 0 0 0 0 0 0 0 18 00010010 1 0 0 0 0 0 0 0 19 00010011 0 0 0 1 1 1 1 1 20 00010100 0 0 1 1 0 0 0 0 21 00010101 0 0 0 0 0 0 0 0 22 00010110 1 0 0 1 1 1 0 0 23 00010111 0 1 0 0 0 1 1 1 24 00011000 0 0 0 0 0 1 0 0 25 00011001 0 0 0 0 0 0 0 0 26 00011010 1 0 0 0 1 1 0 0 27 00011011 0 0 0 0 0 0 0 0 28 00011100 0 0 0 * * * * * 29 00011101 0 0 0 0 0 0 0 0 30 00011110 0 0 0 0 0 0 0 0 31 00011111 0 0 0 0 0 0 0 0 32 00100000 0 0 0 0 0 0 0 0 33 00100001 0 0 0 0 0 0 0 0 34 00100010 0 0 0 0 0 0 0 0 35 00100011 0 0 0 0 0 0 0 0 36 00100100 0 0 0 0 0 0 0 0 37 00100101 0 0 0 0 0 0 0 0 38 00100110 0 0 0 0 0 0 0 0 39 00100111 0 0 0 0 0 0 0 0 40 00101000 0 0 0 0 0 0 0 0 41 00101001 0 0 0 0 0 0 0 0 42 00101010 0 0 0 0 0 0 0 0 43 00101011 0 0 0 0 0 0 0 0 44 00101100 0 0 0 0 0 0 0 0 45 00101101 0 0 0 0 0 0 0 0 46 00101110 0 0 0 0 0 0 0 0 47 00101111 1 0 0 1 1 0 0 0 48 00110000 0 0 0 0 0 0 0 0 49 00110001 0 0 0 0 0 0 0 0 50 00110010 0 0 0 0 0 0 0 0
LV25700PM no.a1709-41/68 sa sub address d7 d6 d5 d4 d3 d2 d1 d0 51 00110011 0 0 0 0 0 0 0 0 52 00110100 0 0 0 0 0 0 0 0 53 00110101 0 0 0 0 0 0 0 0 54 00110110 0 0 0 0 0 0 0 0 55 00110111 0 0 0 0 0 0 0 0 56 00111000 0 0 0 0 0 0 0 0 57 00111001 0 0 0 0 0 0 0 0 58 00111010 0 0 0 0 0 0 0 0 59 00111011 0 0 0 0 0 0 0 0 60 00111100 0 0 0 0 0 0 0 0 61 00111101 0 0 0 0 0 0 0 0 62 00111110 0 0 0 0 0 0 0 0 63 00111111 0 0 0 0 0 0 0 0 64 01000000 0 0 0 0 0 0 0 0 65 01000001 0 0 0 0 0 0 0 0 66 01000010 0 0 0 0 0 0 0 0 67 01000011 0 0 0 0 0 0 0 0 68 01000100 0 0 0 0 0 0 0 0 69 01000101 0 0 0 0 0 0 0 0 70 01000110 0 0 0 0 0 0 0 0 71 01000111 0 0 0 0 0 0 0 0 72 01001000 0 0 0 0 0 0 0 0 73 01001001 0 0 0 0 0 0 0 0 74 01001010 0 0 0 0 0 0 0 0 75 01001011 0 0 0 0 0 0 0 0 76 01001100 0 0 0 0 0 0 0 0 77 01001101 0 0 0 0 0 0 0 0 78 01001110 0 0 0 0 0 0 0 0 79 01001111 0 0 0 0 0 0 0 0 80 01010000 0 0 0 0 0 0 0 0 81 01010001 0 0 0 0 0 0 0 0 82 01010010 0 0 0 0 0 0 0 0 83 01010011 0 0 0 0 0 0 0 0 84 01010100 0 0 0 0 0 0 0 0 85 01010101 0 0 0 0 0 0 0 0 86 01010110 0 0 0 0 0 0 0 0 87 01010111 0 0 0 0 0 0 0 0 88 01011000 0 0 0 0 0 0 0 0 89 01011001 0 0 0 0 0 0 0 0 90 01011010 0 0 0 0 0 0 0 0 91 01011011 0 0 0 0 0 0 0 0 92 01011100 0 0 0 0 0 0 0 0 93 01011101 0 0 0 0 0 0 0 0 94 01011110 0 0 0 1 0 0 1 1 95 01011111 * * * * * * * * yellow *: am adjustment orange : users should readjust as necessary. asterisks indicate items th at are already adjusted in sanyo semiconductor?s tester proces s. other parameters (sa) also require readjustment when used outside sanyo semiconduct or?s recommended settings. gray 0: system reserved
LV25700PM no.a1709-42/68 sa1. pll n value higher-order 8 bits d7 d6 d5 d4 d3 d2 d1 d0 p15 p14 p13 p12 p11 p10 p9 p8 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 - - - - - - - - 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 sa2. pll n value lower-order 8 bits d7 d6 d5 d4 d3 d2 d1 d0 p7 p6 p5 p4 p3 p2 p1 p0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 - - - - - - - - 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 *sa1: d7 to d0 [p7 ot p0] = all high
LV25700PM no.a1709-43/68 sa3. reference counter setting, rds control, i 2 c format switching, flash programming d7 d6 d5 d4 d3 d2 d1 d0 r3 r2 r1 r0 ult rds_on i 2 c_sck_ld - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 not used. fixed at 0. 0 sck no l drive (normal mode) 1 sck l drive hold scl low until processing ends at the slave side. 0 rds power off 1 rds power on 0 pll unlock detection time 0.39 s 1 pll unlock detection time 0.98 s 0 0 0 0 pll stop 0 0 0 1 - 0 0 1 0 - 0 0 1 1 - 0 1 0 0 ref = 5khz 0 1 0 1 - 0 1 1 0 - 0 1 1 1 ref = 10khz 1 0 0 0 - 1 0 0 1 ref = 25khz 1 0 1 0 - 1 0 1 1 ref = 50khz 1 1 0 0 ref = 100khz sa4. am/fm/weather, am frequency division setting, seek mode, tuner on/off, fm local hi/low d7 d6 d5 d4 d3 d2 d1 d0 amfm weather osc_div1 osc_div0 seek1 seek0 tuner_off iq_up_low msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 upper local osc (for us/eu) 1 lower local osc (for jpn/east eu) 0 running 1 tuner off 0 0 not used. 0 1 receive 1 0 not used. 1 1 seek/rds 0 0 am osc frequency division ratio setting: 1/20 0 1 am osc frequency division ratio setting: 1/16 1 0 am osc frequency division ratio setting: 1/12 1 1 am osc frequency division ratio setting: 1/8 0 am/fm band 1 weather band (osc = 1) 0 fm mode 1 am mode
LV25700PM no.a1709-44/68 sa5. fm rf 8bit dac d7 d6 d5 d4 d3 d2 d1 d0 rf_dac7 rf_dac6 rf_dac 5 rf_dac4 rf_dac3 rf_d ac2 rf_dac1 rf_dac0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 rf dac = 0.3v (min) 0 0 0 0 0 0 0 1 - - - - - - - - 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 rf dac = 7.1v (max) sa6. fm ant 8bit dac (irr_adj) d7 d6 d5 d4 d3 d2 d1 d0 ant_dac7 ant_dac6 ant_dac5 ant_dac4 ant_dac3 ant_ dac2 ant_dac1 ant_dac0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 ant dac = 0.3v (min) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 ant dac = 7.1v (max) sa7. if count time setting & d0 setting d7 d6 d5 d4 d3 d2 d1 d0 ul/ifend busy dz1 dz0 cte gt2 gt1 gt0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 if count gate time = 0.878048msec 0 0 1 if count gate time = 3.512195msec 0 1 0 if count gate time = 7.024390msec 0 1 1 if count gate time = 28.09756msec 1 0 0 if count gate time = 56.195123msec 1 0 1 if count gate time = 112.390244msec 0 counter reset 1 count start 0 0 dzc-a 0 1 dzc-b 1 0 dzc-c 1 1 dzc-d 0 0 unlock detection: unlo ck detection start = high, lock = low 0 1 busy signal: when the i 2 c slave address is received = high idling = low 1 0 if count end signal: when d7, d6=10: high, if count end: low 1 1 ul|busy signal: logical or of unlock detection signal and busy signal is output.
LV25700PM no.a1709-45/68 sa8. 1/2, 1/3 frequency division setting d7 d6 d5 d4 d3 d2 d1 d0 - - - - - - - div_sw msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 am/fm band div 1/2 frequency division (for us/eu/east eu/sw/weather) 1 fm band div 1/3 frequency division (for japan) 0 0 0 0 0 0 0 not used. fixed at 0. sa9. dc monitor select/sd adjustment d7 d6 d5 d4 d3 d2 d1 d0 dcselct2 dcselct1 dcselct0 nc_sens main4 nc_sens main3 nc_sens main2 nc_sens main1 nc_sens main0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 receive mode: nc sensitivity thres hold value = 0.25v (detection sensitivity increase) 0 0 0 0 1 receive mode: nc sensitivity threshold value = 0.32v - - - - - - - - 1 1 1 1 0 receive mode: nc sensitivity threshold value = 2.57v 1 1 1 1 1 receive mode: nc sensitivity thres hold value = 2.65v (detection sensitivity decrease) 0 0 0 select dc voltage output for the functions th at are necessary during process adjustment. [the setting is valid when sa20: d0 = 1.] vref 2.7v 0 0 1 vafc 0 1 0 undesired voltage 0 1 1 if filter bw out 1 0 0 sd/mpx vco out [normally fixed bit] 1 0 1 vsm 1 1 0 nc_gate_out 1 1 1 d0 (not used) sa10. if filter sens d7 d6 d5 d4 d3 d2 d1 d0 fil_sens 3 fil_sens 2 fil_sens 1 fil_sen s 0 hpf_fc in_detoff ncsense dac_9off msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 rf-dac off_sw = on mode [normal: when rf/ant-dac is used] 1 rf-dac off_sw = off mode 0 ac s-meter additional resistor = 54k 1 ac s-meter additional resistor = 27k 0 if filter pickup = normal *(sa11_d7 = 0, sa10_d2 = 0) 1 if filter pickup = only vsmac *(sa11_d7 = 0, sa10_d2 = 1) 0 rds hpf fc = 100khz 1 rds hpf fc = 50khz 0 0 0 0 receive mode: if filter sens itivity = high/at seek: sd bandwidth = narrow 0 0 0 1 receive mode: if filter sensitivity = 1 1 1 0 receive mode: if filter sensitivity = 1 1 1 1 receive mode: if filter sensitivity = low/at seek: sd bandwidth = wide
LV25700PM no.a1709-46/68 sa11. signal meter adjustment/am/fm forced agc on d7 d6 d5 d4 d3 d2 d1 d0 in_deton amagc_on fmagc_on s_meter4 s_meter3 s_meter2 s_meter1 s_meter0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 fm vsm (30db ) = 2.293v 0 0 0 0 1 fm vsm (30db ) = 2.239v [am mode: fixed at 1dh] 1 1 1 1 0 fm vsm (30db ) = 1.456v 1 1 1 1 1 fm vsm (30db ) = 1.427v 0 fm forced rf agc = off (normal) 1 fm forced rf agc = on (ant_d on) 0 am forced rf agc = off (normal) 1 am forced rf agc = on (ant_d on) 0 if filter pickup = normal *(sa11_d7 = 0, sa10_d2 = 0) 1 if filter pickup = only detout *(sa11_d7 = 1, sa10_d2 = 0) sa12. signal quality/fm det phase d7 d6 d5 d4 d3 d2 d1 d0 sig_q3 sig_q2 sig_q1 sig_q0 qdp_ adj3 qdp_adj2 qd p_adj1 qdp_adj0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 fm det phase = - 0 0 0 1 fm det phase = 1 1 1 0 fm det phase = 1 1 1 1 fm det phase = + 0 0 0 0 signal quality threshold value = 0.2v 0 0 0 1 signal quality threshold value = 0.34v 1 1 1 0 signal quality threshold value = 2.36v 1 1 1 1 signal quality threshold value = 2.5v
LV25700PM no.a1709-47/68 sa13. band variable bpf (center frequency) d7 d6 d5 d4 d3 d2 d1 d0 fil_vsmon - cf_adj_d5 cf_adj_d4 cf_adj_d3 cf_adj_d2 cf_adj_d1 cf_adj_d0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 303.6khz (cf bit = 0) *mim * reference value 0 0 0 0 0 1 307.6khz (cf bit = 1) * reference value 0 0 0 0 1 0 439.6khz (cf bit = 29) * reference value 0 0 0 0 0 1 444.4khz (cf bit = 30) * reference value 0 1 1 1 1 1 450khz (center frequency) (cf bit = 31) * reference value 1 0 0 0 0 0 450khz (center frequency) (cf bit = 32) * reference value 1 0 0 0 0 1 454.4khz (cf bit = 33) * reference value 1 0 0 0 1 0 458.8khz (cf bit = 34) * reference value 1 1 1 1 1 0 589.2khz (cf bit = 62) * reference value 1 1 1 1 1 1 594khz (cf bit = 63) *max * reference value 0 not used. fixed at 0. 0 filter dc (vsm) out off 1 filter dc (vsm) out on sa14. band variable bpf (band/gain) d7 d6 d5 d4 d3 d2 d1 d0 - - bwd_adj_d5 bwd_adj_d4 bwd_adj_d3 bwd_adj_d2 bwd_adj_d1 bwd_adj_d0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 gain = -50db (bw/g bit = 0) *min * reference value 0 0 0 0 0 1 gain = db (bw/g bit = 1) 0 0 0 0 1 0 gain = db (bw/g bit = 29) 0 0 0 0 0 1 gain = db (bw/g bit = 30) 0 1 1 1 1 1 gain = 0db (cf bit = 31) * reference value 1 0 0 0 0 0 gain = 0db (cf bit = 32) * reference value 1 0 0 0 0 1 gain = db (bw/g bit = 33) 1 0 0 0 1 0 gain = db (bw/g bit = 34) 1 1 1 1 1 0 gain = db (bw/g bit = 62) 1 1 1 1 1 1 gain = +50db (bw/g bit = 63) *max * reference value 0 0 not used. fixed at 0.
LV25700PM no.a1709-48/68 sa15. keyed agc/iq mix phase d7 d6 d5 d4 d3 d2 d1 d0 key_agc3 key_agc2 key_agc1 key_agc0 irr_vg3 irr_vg2 irr_vg1 irr_vg0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 fm iq mix phase = 0 0 0 1 fm iq mix phase = 1 1 1 0 fm iq mix phase = 1 1 1 1 fm iq mix phase = 0 0 0 0 fm keyed agc threshold value = 0.14v am if gain = 63db (agc fom) 0 0 0 1 fm keyed agc threshold value = 0.24v am if gain = 62db (agc fom) 1 1 1 0 fm keyed agc threshold value = 2.07v am if gain = 49.5db (agc fom) 1 1 1 1 fm keyed agc threshold value = 2.2v am if gain = 49db (agc fom) sa16. null voltage d7 d6 d5 d4 d3 d2 d1 d0 null5 null4 null3 null2 null1 null0 - - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 fixed (not used) 0 0 0 0 0 0 fm null voltage low 1step = +30mv 0 0 0 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 fm null voltage high sa17. pilot cancel/separation adjustment d7 d6 d5 d4 d3 d2 d1 d0 pican1 pican0 sepd5 sepd4 sepd3 sepd2 sepd1 sepd0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 sub level = max 0 0 0 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 sub level = min 0 0 pilot cancel = center 0 1 pilot cancel = low 1 0 pilot cancel = high 1 1 pilot cancel = off
LV25700PM no.a1709-49/68 sa18. noise canceller sensitivity/mpx_vco d7 d6 d5 d4 d3 d2 d1 d0 noise_sen1 noise_sen0 mpxvco_5 mpxvco _4 mpxvco_3 mpxvco_2 mpxvco_1 mpxvco_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 mpx vco = 227khz 0 0 0 0 0 1 mpx vco = 230khz 1 1 1 1 1 0 mpx vco = 369khz 1 1 1 1 1 1 mpx vco = 373khz 0 0 noise sens = 15k 0 1 noise sens = 20k sens = hi 1 0 noise sens = 6k sens = low 1 1 noise sens = 10k sa19. am nc stop sensitivity d7 d6 d5 d4 d3 d2 d1 d0 - - - am_nc_stop4 am_nc_stop3 am_nc_stop2 am_nc_stop1 am_nc_stop0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 am nc stop = 0.3v ( = vsm) 0 0 0 0 1 am nc stop = 0.51v ( = vsm) 1 1 1 1 0 am nc stop = 4.06v ( = vsm) 1 1 1 1 1 am nc stop = 4.19v ( = vsm) 0 0 0 not used. fixed at 0. sa20. fm mute adjustment (noise convergence adjustment) d7 d6 d5 d4 d3 d2 d1 d0 muteatt5 muteatt4 muteatt3 muteatt2 mu teatt1 muteatt0 moni mode rev mode msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 normal 1 smeter ad read mode (for test monitoring) 0 dc select switching 0: sd/st pin output [normally fixed bit] 1 dc select switching 1: each voltage output at the dc moni pin. [sa9: d7-d5 setting enabled] 0 0 0 0 0 0 fm mute attenuation = 2.0db am nc gate time = 1800 s (no input) 0 0 0 0 0 1 fm mute attenuation = 2.4db am nc gate time = 1500 s (no input) [fixed value in am mode: 0ch] 0 1 1 1 1 1 fm mute attenuation = db am nc gate time = 630 s (no input) 1 0 0 0 0 0 fm mute attenuation = db am nc gate time = 600 s (no input) 1 1 1 1 1 0 fm mute attenuation = 25db am nc gate time = 335 s (no input) 1 1 1 1 1 1 fm mute attenuation = 25db am nc gate time = 330 s (no input)
LV25700PM no.a1709-50/68 sa21. mrc sensitivity, time constant/am s-meter d7 d6 d5 d4 d3 d2 d1 d0 - - amvsm_shift1 amvsm_shi ft0 t_const1 t_const0 mrcsense1 mrcsense0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 mrc sensitivity = sens high 0 1 1 0 1 1 mrc s ensitivity = sens low 0 0 mrc charge time = 360ms mrc discharge time = 0.63ms 0 1 mrc charge time = 515ms mrc discharge time = 0.63ms 1 0 mrc charge time = 890ms mrc discharge time = 0.63ms 1 1 mrc charge time = 4.5s mrc discharge time = 0.63ms 0 0 fm mute sw mute_1v attenuation = 19db am s-meter shifter input level = 30db when vsm = 1.5v 0 1 fm mute sw mute_1v attenuation = 13db input level = 38db when vsm = 1.5v 1 0 fm mute sw mute_1v attenuation = 8db input level = 46db when vsm = 1.5v 1 1 fm mute sw mute_1v attenuation = 6db input level = 55db when vsm = 1.5v 0 0 not used. fixed at 0. sa22. am reagc/fm if gain d7 d6 d5 d4 d3 d2 d1 d0 fifgain3 fifgain2 fifgain1 fifgain0 amrfagc3 amrfagc2 amrfagc1 amrfagc0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 am: rfagc (hard) threshold value = 0.37v 0 0 0 1 am: rfagc (hard) threshold value = 0.47v 1 1 1 0 am: rfagc (hard) threshold value = 1.94v 1 1 1 1 am: rfagc (hard) threshold value = 2.04v 0 0 0 0 fm if gain = gain low 0 0 0 1 1 1 1 0 1 1 1 1 fm if gain = gain high
LV25700PM no.a1709-51/68 sa23. wide/narrow agc d7 d6 d5 d4 d3 d2 d1 d0 w_agc3 w_agc2 w_agc1 w_agc0 n_agc3 n_agc2 n_agc1 n_agc0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 fm narrow agc on = 67.8db * reference value am narrow agc on = 68.0db * reference value 0 0 0 1 fm narrow agc on = 68.0db * reference value am narrow agc on = 68.5db * reference value 1 1 1 0 fm narrow agc on = 80db * reference value am narrow agc on = 82.7db * reference value 1 1 1 1 fm narrow agc on = 81db * reference value am narrow agc on = 83.6db * reference value 0 0 0 0 fm wide agc on = 94.5db * reference value am wide agc on = 89.0db * reference value 0 0 0 1 fm wide agc on = 94.7db * reference value am wide agc on = 89.3db * reference value 1 1 1 0 fm wide agc on = 98.1db * reference value am wide agc on = 104.5db * reference value 1 1 1 1 fm wide agc on = 98.4db * reference value am wide agc on = 105.2db * reference value sa24. d7 d6 d5 d4 d3 d2 d1 d0 mslope am_nc_off - vco_on st_sens_adj forcenoagc - - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 not used. fixed at 0. 0 not used. fixed at 0. 0 force noise agc = off 1 force noise agc = on 0 stereo on sensitivity adjustment = 3% 1 stereo on sensitivity adjustment = 2% (st sense up) 0 mpx vco monitor = normal 1 mpx vco monitor = on 0 not used. fixed at 0. 0 normal 1 am_nc_off 0 slope 2.0: change in mute voltage with respect to change in s-meter voltage the first slope is x1, the second slope is x4 (limiting is set to weak electric field, but cannot reduce the noise convergence.) 1 slope 1.0: change in mute voltage with respect to change in s-meter voltage the first slope is x1, the second slope is x4 (normal)
LV25700PM no.a1709-52/68 sa25. snc threshold value adjustment d7 d6 d5 d4 d3 d2 d1 d0 dtestsw sncinc1 sncinc0 s nc_dac4 snc_dac3 snc_da c2 snc_dac1 snc_dac0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 snc starting point threshold value = 0.7v am rf agc (soft) threshold value = 0.7v 0 0 0 0 1 snc starting point threshold value = 0.73v am rf agc (soft) threshold value = 0.73v 1 1 1 1 0 snc starting point threshold value = 1.80v am rf agc (soft) threshold value = 1.80v 1 1 1 1 1 snc starting point threshold value = 1.83v am rf agc (soft) threshold value = 1.83v 0 0 snc slope = gentle 1 1 snc slope = s teep 0 dac test = normal 1 dac test = dac test mode sa26. de-emphasis switching/hcc threshold value adjustment d7 d6 d5 d4 d3 d2 d1 d0 deempsw mo_st_sw irr_ sw hcc_dac4 hcc_dac3 hcc_ dac2 hcc_dac1 hcc_dac0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 hcc starting point threshold value = 0.50v 0 0 0 0 1 hcc starting point threshold value = 0.53v 1 1 1 1 0 hcc starting point threshold value = 0.47v 1 1 1 1 1 hcc starting point threshold value = 1.50v 0 image rejection fine adjustment off [when sa6: ant-dac is used] 1 image rejection fine adjustment on [when sa6: irr-dac is used] 0 forced monaural = off 1 forced monaural = on 0 de-emphasis = 50 sec 1 de-emphasis = 75 sec sa27. fm rf automatic adjustment mode setting d7 d6 d5 d4 d3 d2 d1 d0 - - usr_rf_tune fm_pind_off usr_nrml - - ift_trans msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 not used. 1 mix trans mode (fm normal) 0 0 0 not used. fixed at 0. 1 fm pin diode forced off (for experimentation) 0 default setting 0 0 0 not used. fixed at 0. * d5: auto tune [0: on/1:off], d4: pin d [0: normal/1: off = auto tune], d3: counter [0: on = at auto tune/1: off]
LV25700PM no.a1709-53/68 sa28. at seek: sd adjustment d7 d6 d5 d4 d3 d2 d1 d0 - - - seek_sd_on4 seek_sd_on3 seek_sd_on2 seek_sd_on1 seek_sd_on0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 at seek: sd on sensitivity = high 0 0 0 0 0 0 0 1 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 1 at seek: sd on sensitivity = low sa29. at seek: sd bandwidth d7 d6 d5 d4 d3 d2 d1 d0 seek_sd_bw3 seek_sd_bw2 seek_sd_bw1 seek_sd_bw0 - - - - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 at seek: sd bandwidth = narrow 0 0 0 1 0 0 0 0 1 1 1 0 0 0 0 0 1 1 1 1 0 0 0 0 at seek: sd bandwidth = wide sa30. reserved d7 d6 d5 d4 d3 d2 d1 d0 - - - - - - - - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function system reserved area sa31. signal quality sensitivity setting d7 d6 d5 d4 d3 d2 d1 d0 qo_unddet_7 qo_unddet_6 qo_unddet_5 qo_unddet_4 qo_unddet_3 qo_unddet_2 qo_unddet_1 qo_unddet_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 signal quality sense = high (threshold value low) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 signal quality sense = low (threshold value high)
LV25700PM no.a1709-54/68 sa32. if band variable afc control (+ side) d7 d6 d5 d4 d3 d2 d1 d0 qo_afc_max_7 qo_afc_max_6 qo_afc_max_5 qo_afc_max_4 qo_afc_max_3 qo_afc_max_2 qo_afc_max_1 qo_afc_max_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 q_afc sense = high [+side] (threshold value low) * provide hysteresis with respect to the sa33 settings. 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 q_afc sense = low [+ side] (threshold value high) sa33. if band variable afc control (- side) d7 d6 d5 d4 d3 d2 d1 d0 qo_afc_min_7 qo_afc_min_6 qo_afc_min_5 qo_afc_min_4 qo_afc_min_3 qo_afc_min_2 qo_afc_min_1 qo_afc_min_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 q_afc sense = high [- side] (threshold value low) * provide hysteresis with respect to the sa32 settings. 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 q_afc sense = low [- side] (threshold value high) sa34. fm mute time constant setting/signal quality band control d7 d6 d5 d4 d3 d2 d1 d0 qo_afcuse mute_tc_up_2 mute_tc_up_1 mute_tc_up_0 - mute_tc_down2 mute_tc_down1 mute_tc_down0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 uses no afc voltage in formation for the quality-out output. 1 uses afc voltage info rmation for the quality-out output. 0 0 0 mute time constant (up)_ 2ms/1 step 0 0 1 mute time constant (up)_ 8ms/1 step 0 1 0 mute time constant (up)_ 16ms/1 step 0 1 1 mute time constant (up)_ 32ms/1 step 0 not used. fixed at 0. 0 0 0 mute time constant (down)_ 2ms/1 step 0 0 1 mute time constant (down)_ 8ms/1 step 0 1 0 mute time constant (down)_ 16ms/1 step 0 1 1 mute time constant (down)_ 32ms/1 step
LV25700PM no.a1709-55/68 sa35. fm limiting sensitivity adjustment 2 d7 d6 d5 d4 d3 d2 d1 d0 mute_smr_slc_7 mute_smr_slc_6 mute_smr_s lc_5 mute_smr_slc_4 mute_smr_slc_3 mute_s mr_slc_2 mute_smr_slc_1 mute_smr_slc_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 fm limiting sensit ivity adjustment 2 adjusting the threshold value (second start poi nt: mute voltage slope x 2) at which noise convergence is to be achieved. 0: threshold value low (weak electric field) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 255: threshold value high (strong electric field) sa36. fm limiting sensitivity adjustment 1 d7 d6 d5 d4 d3 d2 d1 d0 mute_smr_zero_7 mute_smr_zero_6 mute_smr_zero_5 mute_smr_zero_4 mute_smr_zero_3 mute_smr_zero_2 mute_smr_zero_1 mute_smr_zero_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 fm limiting sensit ivity adjustment 1 adjusting the threshold value (first start poi nt: mute voltage slope x 1) at which -3 db sensitivity adjustment is to be performed. 0: threshold value low (weak electric field) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 255: threshold value high (strong electric field) sa37. modulation index det ection sensitivity (+ side) d7 d6 d5 d4 d3 d2 d1 d0 bpf_mod_max_7 bpf_mod_max_6 bpf_mod_m ax_5 bpf_mod_max_4 bpf_mod_max_3 bpf_m od_max_2 bpf_mod_m ax_1 bpf_mod_max_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 if filter modulation index detection threshold value [+ side] = low * provide hysteresis with respect to the na rrow/sa38 settings if t he threshold value is exceeded. 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 if filter modulation index detection threshold value [+ side] = high * provide hysteresis with respect to the na rrow/sa38 settings if t he threshold value is exceeded.
LV25700PM no.a1709-56/68 sa38. modulation index det ection sensitivity (- side) d7 d6 d5 d4 d3 d2 d1 d0 bpf_mod_min_7 bpf_mod_min_6 bpf_mod_min_5 bpf_mod_min_4 bpf_mod_min_3 bpf_mod_min_2 bpf_mod_min_1 bpf_mod_min_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 if filter modulation index detection threshold value [- side] = low * provide hysteresis with respect to the na rrow/sa37 settings if t he threshold value is exceeded. 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 if filter modulation index detection threshold value [- side] = high * provide hysteresis with respect to the na rrow/sa37 settings if t he threshold value is exceeded. sa39. modulation index detection operation start point (+ side) d7 d6 d5 d4 d3 d2 d1 d0 bpf_smr_max_7 bpf_smr_max_6 bpf_smr_max_5 bpf_smr_max_4 bpf_smr_max_3 bpf_smr_max_2 bpf_smr_max_1 bpf_smr_max_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 if filter modulation index detection func tion off threshold value [+ side] = low turns off the modulation detec tion function above a certain electric field strength (compared with s-meter value) or stronger. * provide hysteresis with respect to the sa40 settings. 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 if filter modulation index detecti on function off threshold value [+ side] = high sa40. modulation index detection operation start point (- side) d7 d6 d5 d4 d3 d2 d1 d0 bpf_smr_min_7 bpf_smr_m in_6 bpf_smr_min_5 bpf_s mr_min_4 bpf_smr_min_3 bpf_smr_min_2 bpf_smr _min_1 bpf_smr_min_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 if filter modulation index detection func tion off threshold value [- side] = low turns off the modulation detection function above a certain electric field strength (compared with s-meter value) or stronger. * provide hysteresis with respect to the sa39 settings. 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 if filter modulation index detecti on function off threshold value [- side] = high
LV25700PM no.a1709-57/68 sa41. if filter band limitation d7 d6 d5 d4 d3 d2 d1 d0 bpf_limit_7 bpf_limit_6 bpf_limit_5 bpf_limit_4 bpf_limit_3 bpf_limit_2 bpf_limit_1 bpf_limit_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 limits the narrow band of the if filter. [wide band is as is = 180khz.] 0: 180khz (narrow band 180khz = no band control) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 255:40khz sa42. if filter band fixing d7 d6 d5 d4 d3 d2 d1 d0 bpf_fix_7 bpf_fix_6 bpf_fix_5 bpf_fix_4 bpf_fix_3 bpf_fix_2 bpf_fix_1 bpf_fix_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 fixes the band of the if filter. [enabled when sa43 d7 = 1] 0: 180khz (forced wide band) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 255: 40khz (forced narrow band) sa43. if filter time constant/detection sensitivity d7 d6 d5 d4 d3 d2 d1 d0 bpf_fix bpf_tc_2 bpf_tc_1 bpf_tc_0 - - bpf_slope_1 bpf_slope_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 adjusts the sensitivity of the if filter (coarse adjustment). 0.5: detection sensitivity low 0 1 1.0: 1 0 2: detection sensitivity high 0 0 not used. fixed at 0. 0 0 0 if filter sampling time = 2.19 ms 0 0 1 if filter sampling time = 8.78ms 0 1 0 if filter sampling time = 17.56ms 0 1 1 if filter sampling time = 35.12ms 0 if filter band fo rced mode switch 0: if filter band auto mode (normal) 1 1: if filter band forced mode [sa42 settings enabled]
LV25700PM no.a1709-58/68 sa44. if band variable afc control (+ side) d7 d6 d5 d4 d3 d2 d1 d0 afc_max_7 afc_max_6 afc_max_5 afc_max_4 afc_max_3 afc_max_2 afc_max_1 afc_max_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 if filter afc control threshol d value [+ side] = 0: threshold value low (sensitive to interference f small) * provide hysteresis with respect to the sa45 settings. 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 if filter afc control threshold val ue [+ side] = 255: threshold value high (sensitive to interference f large) sa45. if band variable afc control (- side) d7 d6 d5 d4 d3 d2 d1 d0 afc_min_7 afc_min_6 afc_min_5 afc_min_4 afc_min_3 afc_min_2 afc_min_1 afc_min_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 if filter afc control threshol d value [- side] = 0: threshold value low (sensitive to interference f small) * provide hysteresis with respect to the sa44 settings. 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 if filter afc control threshold value [- side] = 255: threshold value high (sensitive to interference f large) sa46. reserved d7 d6 d5 d4 d3 d2 d1 d0 - - - - - - - - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function system reserved area
LV25700PM no.a1709-59/68 sa47. hcc cut-off frequency/automatic interpolation setting/others d7 d6 d5 d4 d3 d2 d1 d0 rds_afc int_att_on hcc_sw3 hcc_sw2 hcc_sw1 - - - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 not used. fixed at 0. 0 0 0 hcc cut-ff adjustment: fc = 400hz (when c51 = 2200pf) 0 0 1 hcc cut-ff adjustment: fc = 500hz (when c51 = 2200pf) 0 1 0 hcc cut-ff adjustment: fc = 600hz (when c51 = 2200pf) 0 1 1 hcc cut-ff adjustment: fc = 800hz (when c51 = 2200pf) * recommended for am 1 0 0 hcc cut-ff adjustment: fc = 1khz (when c51 = 2200pf) 1 0 1 hcc cut-ff adjustment: fc = 1.4khz (when c51 = 2200pf) 1 1 0 hcc cut-ff adjustment: fc = 2.2khz (when c51 = 2200pf) * recommended for fm 1 1 1 hcc cut-ff adjustment: fc = 5.5khz (when c51 = 2200pf) 0 not used. fixed at 0. 0 af search time constant switching: af search mode 1 af search time co nstant switching: receive/at seek sa48. dac interpolation selection d7 d6 d5 d4 d3 d2 d1 d0 - - - - - s_meter int_p rf_int_p irr_int_p msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 irr-adj automatic interpolation di sabled (no interpolation by internal firmware) 1 irr adj automatic interpolation enabled 0 rf-dac automatic interpolation di sabled (no interpolation by internal firmware) 1 rf-dac automatic interpolation enabled 0 s_meter_shift automatic interpolation disabled (no interpolation by internal firmware) 1 s_meter_shift automatic interpolation enabled 0 0 0 0 0 system reserved area sa49. reserved d7 d6 d5 d4 d3 d2 d1 d0 - - - - - - - - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function system reserved area
LV25700PM no.a1709-60/68 sa50. rds signal quality sensitivity setting d7 d6 d5 d4 d3 d2 d1 d0 rds_qo_udet_7 rds_qo_udet_6 rds_qo_udet_5 rds_qo_udet_4 rds_qo_udet_3 rds_qo_udet_2 rds_qo_udet_1 rds_qo_udet_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 signal quality sense = high (threshold value low) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 signal quality sense = low (threshold value high) sa51 to 58. fm rf 8-bit dac point values d7 d6 d5 d4 d3 d2 d1 d0 rf_dac_point_7 rf_dac_point_6 rf_dac_point_5 rf_dac_point _4 rf_dac_point_3 rf_dac_point_2 rf_dac_point_1 rf_dac_point_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 rf dac = 0.3v (min) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 rf dac = 7.1v (max) sa59 to 66. fm ant 8-bit dac point values (irr_point) d7 d6 d5 d4 d3 d2 d1 d0 ant_dac_point_7 ant_dac_point_6 ant_dac_point_5 ant_dac_point_4 a nt_dac_point_3 ant_dac_point_2 ant _dac_point_1 ant_dac_point_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 ant dac = 0.3v (min) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 ant dac = 7.1v (max) sa67 to 74. signal meter point values d7 d6 d5 d4 d3 d2 d1 d0 - - - s_meter4 s_meter3 s_me ter2 s_meter1 s_meter0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 fm vsm (30db ) = 2.293v 0 0 0 0 1 fm vsm (30db ) = 2.239v 1 1 1 1 0 fm vsm (30db ) = 1.456v 1 1 1 1 1 fm vsm (30db ) = 1.427v 0 0 0 not used. fixed at 0.
LV25700PM no.a1709-61/68 the point frequencies are fixed as shown in the table below. the place of destina tion is selected using the area code [sa94 d7-d4] and align number [sa94 d3-d0]. area japan usa usa + weather europe europe + oirt area code [sa94 d7-d4] 0000 0001 0100 0010 0011 align number [sa94 d3-d0] 0011 0011 0101 0011 0101 0011 0101 0011 0101 point0 76 87.9 87.9 87. 9 87.9 87.5 87.5 65 65 point1 83 98.1 90.1 98.1 90.1 98 90 70 70 point2 90 108.1 98.1 108.1 98.1 108 98 74 74 point3 106.1 162.4 106.1 106 87.5 87.5 point4 108.1 162.55 108.1 108 98 90 point5 162.4 108 98 point6 162.55 106 point7 108 sa75 to 79, sa83 to 92. reserved d7 d6 d5 d4 d3 d2 d1 d0 - - - - - - - - msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function system reserved area sa80. af search pll n va lue higher-order 8 bits d7 d6 d5 d4 d3 d2 d1 d0 af_p15 af_p14 af_p13 af_p12 af_p11 af_p10 af_p9 af_p8 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 - - - - - - - - 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1
LV25700PM no.a1709-62/68 sa81. af search pll n va lue lower-order 8 bits d7 d6 d5 d4 d3 d2 d1 d0 af_p7 af_p6 af_p5 af_p4 af_p3 af_p2 af_p1 af_p0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 - - - - - - - - 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 * sa1: d7 to d0 [p7 to p0] = all high sa82. af search rf 8-bit dac d7 d6 d5 d4 d3 d2 d1 d0 af_rfd7 af_rfd6 af_rfd 5 af_rfd4 af_rfd3 af_r fd2 af_rfd1 af_rfd0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 rf dac = 0.3v (min) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 rf dac = 7.1v (max) sa83. af search ant 8-bit dac (not used when used as irr_adj) d7 d6 d5 d4 d3 d2 d1 d0 af_antd7 af_antd6 af_antd5 af_antd4 af_antd3 af_antd2 af_antd1 af_antd0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 0 0 0 0 0 0 ant dac = 0.3v (min) 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 ant dac = 7.1v (max)
LV25700PM no.a1709-63/68 sa93. custom code d7 d6 d5 d4 d3 d2 d1 d0 custom_code_7 custom_code_6 custom_code_5 custom_code_4 custom_code_3 custom_code_2 custom_code_1 custom_code_0 * used to store information about anythi ng other than the place of destination sa94. place of destination selection d7 d6 d5 d4 d3 d2 d1 d0 area_code_3 area_code_2 area_code_1 area_code_0 align_no_3 align_no_2 align_no_1 align_no_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function 0 0 1 1 point data count 3 (see the above point frequency chart for details.) 0 1 0 1 point data count 5 (see the above point frequency chart for details.) 0 0 0 0 for japan 0 0 0 1 for usa and canada 0 0 1 0 for europe 0 0 1 1 for europe and oirt 0 1 0 0 for usa, canada plus weather band sa95. checksum d7 d6 d5 d4 d3 d2 d1 d0 check_sum_7 check_sum_6 check_sum _5 check_sum_4 check_sum_3 check _sum_2 check_sum_1 check_sum_0 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 function checksum area
LV25700PM no.a1709-64/68 special commands sa 248. flash write mode set ( 3 bytes) data2 data1 data0 id2 id1 id0 this sets the flash memory write mode. set arbitrary values other than 000000h or ffffffh in the 3 id bytes. this command sets the flash memory to write mode. actual wr ite to the flash memory is performed by transmitting sa252 within 150ms after transmitting th is command, and then executing write. sa 249. rds mute on this mute command (det out attenuation factor = 40db) is used for af search and other operations in rds mode. * this command consists of only a slave address and sub address, and there is no data. sa 250. rds mute off this command is used to set the above-noted rds mute to off. rds mute is automatically set to off during reset, when switching the sa04 fm/am bit, and when executing sa252 flash write. * this command consists of only a slave address and sub address, and there is no data. sa 251. flash default this command reads the sa01 to sa95 data for the curr ent band (fm or am) from the lv25700 internal flash memory. it is used to discard the adjustment data, or when performing verification after executing flash write by sa252. during reset the lv25700 automatically reads the fm data from the flash memory. in addition, when switching the band, the lv25700 also automatically reads the fm data from the flash memory, so execution of this command is not necessary in these cases. * this command consists of only a slave address and sub address, and there is no data. sa 252. flash write (3 bytes) data2 data1 data0 id2 id1 id0 this command writes the sa01 to sa95 data in the flas h memory. this command is used as a set together with sa248 to prevent write errors. when this command is tr ansmitted within 150ms after transmitting sa248 and the ids match, the sa01 to sa95 setting values for the curr ent band (fm or am) are written in the lv25700 internal flash memory. this command should be executed after all the adjustment data is set and the sa95 checksum data is transmitted. note that the fm and am setting values are wr itten in separate areas of the flash memory. set the inverse value of the id transmitted by sa248 in the 3 id bytes. sa 253. switching the normal frequency this command switches the frequency and rf dac value switched by sa254 to the normal (designated by sa1, sa2 and sa5) frequency and rf dac value. * this command consists of only a slave address and sub address, and there is no data. sa 254. switching the af frequency this command switches to the frequency and rf dac value designated by sa80, sa81 and sa82. * this command consists of only a slave address and sub address, and there is no data.
LV25700PM no.a1709-65/68 sa 255. firmware information after this command is sent, the lv25700 enters the firmware information send wait status. the firmware information can be read by reading 8 bytes. for further details, refer to iic-data-output (firmware information). * this command consists of only a slave address and sub address, and there is no data. i 2 c-data-output number description (1) calls the data inside the ic. current sd only (2) data obtained by latching the contents of the if count counter (20-bit binary counter). c19: binary counter msb c0: binary counter lsb i 2 c-data-output (sa data output) this is used to notify the host microcontroller of the lv25700 sub address setting information. set the slave address (write), and load th e sub address (01 to 95) with the information to be acquired with d7 set to 1. next set the slave address (read) an d read 8 bytes (fixed to 8 bytes). 8 bytes of sub address information can be read starting from the sub address n designated by the slave addr ess (write) to n + 7. 95 (0x5f) and subsequent data are unpredictable. c15 c14 c13 c12 (2) if-count c11 c10 c09 c08 ack c07 c06 c05 c04 c03 c02 c01 c00 ack p s1110 slave address (read) 1111ack ---- (2) if-count c19 c18 c17 c16 ack s1110 slave address (write) sub address n (00 to 95) with the information to be acquired 1 1 1 0 ack 1 * * * * * * * ack p s1110 slave address (read) sub address n information 1110ack********ack **** slave address n + 1 information sub address n + 2 information ****ack********ack omitted **** sub address n + 6 information sub address n + 7 information ****ack********ackp
LV25700PM no.a1709-66/68 i 2 c-data-output (firmware information) this is used to notify the host microcontroller of the lv25700 firmware information. designate 0xff as the sub address to be acquired, and get 8 bytes of data with sa data out as follows (fixed to 8 bytes). data other than each firmware information is undetermined. s1110 slave address (write) designate 0xff 1110ack11111111ackp omitted --------ack--------ackp s1110 slave address (read) firmware version integer portion (hex) 1111ack********ack **** firmware version decimal portion (hex) firmware revision information (hex) ****ack********ack
LV25700PM no.a1709-67/68 application circuits example + c15 0.022 f 40 39 38 35 34 33 32 31 30 29 28 27 26 25 65 66 67 68 69 71 74 75 76 77 78 79 41 46 47 51 52 54 55 56 58 60 61 64 23 21 20 16 12 4 2 fm_ant_dr osc_v cc osc1 15 c18 1 f c33 1 f 8v(15pin) i 2 c_bus logic pll a/d r21 2.7k r22 3.3k 10k fm_on 3k c21 0.22 f c22a 15000pf c22b 1000pf c19 33k c16 2pf osc2 vt fet_gnd rf_gnd2 vco_gnd dc monitor f3 ul_ifend_busy st_out st_ind q_out rd_da rd_cl s_da s_ck reset tp34 s_meter dgnd 5v reset connecter a connecter c sck sda rdcl rdda qout st/sd ul 8v 8v 8v 5v vsm_ac 5v r_out l_out f1 f2 f3 dcmon signal quality vt fm_ant am_ant sck sda gnd gnd bus d_v cc _5v vreg_3v d_gnd xtal_out xtal_in xtal_gnd mix_out2 rfagc_in bypass hcc_cont am_rf_agc 1st_if_in2 1st_if_in1 if_v cc _5v 1st_if_out if_gnd mod_det r71 2nd_mixin1 2nd_mixin2 am_mix2 sepa_adj am_lc pilot_det ifagc_lpf cpam r41 3.3k c41b 68nf c41a 3.9nf rds_lpf cpfm c17 3pf fm_mix_in1 am_att am_ifagc fm_rfagc fm_antdac fm_rfdac am_rfagc mix_out1 rf_v cc _8v am_mix_in1 am_mix_in2 c10 10pf c8a 39pf c8c 18pf c8b 4pf t10 mix_in vcd1 fm_rf t68 ift_450k cf3 cf_450k fm_mix_in2 mpx_in r_out chcc l_out gnd agc noise nc_mpx_v cc afc_c afc_out s_meter mrc_time vsm_ac mrc_in nc_in det_out vref_4.9v am_ifin1 am_ifin2 mute_cont phase_det phase_det c11 10pf c16b 27pf l16 l_osc c19 150pf c16a 4pf vcd2 svc704 c5 0.022 f c74a 0.022 f c74b 10 f c76 0.022 f c77 1 f c78 1 f c79 1 f c80 0.022 f r80 30 c10b 0.022 f r5 100k l_am3 1mh fet1 cpm5905 r2 680 l_am4 47 h d3 1sv251 c5b 0.022 f c6 0.022 f l_am2 30mh l_am1 6.8 h c3 0.1 f c4a 0.22 f c7 1000pf r7 30k c8 0.22 f c9 1000pf c4b 36pf c4c 15pf d c13c 0.1 f c53 0.22 f c56 1 f c55 1 f c54 0.47 f c52 0.47 f c47 0.47 f c44 0.22 f c45b 0.47 f c45 1 f c51 2200pf c50 0.015 f c49 0.015 f r54 3k r47 1m r6 470 d2 1sv251 c13 0.1 f l8 0.22 h r13b 330 r13a 1k r11 100k 17 18 19 22 r31 10k r32 10k c36 10 f c35 1 f c36b 1 f p_cancel n_agc state_det n_sens n_gate afc_sw sepa_adj. xtal_osc d/a sw phase lpf ff p_dec. 38k<0 lmt iq_mix. 19k<0 sd sub_dec. matrix fm_det. smeter fm_rf_agc rf_local rds_dec afc div. mute hpf lpf snc hcc m s mrc rf_dac att. c38 18pf c39 18pf x1 20.5m t80 ift_10.7m cf1 cf_10.7m cf2 cf_10.7m + 36 am_rf_agc if_local if_agc am_det. if_amp. b.v._bpf q_cont. + - 11 10 3 9 8 c67 1 f c66 1 f c65 1 f c69 0.022 f c54 1 f c63 0.1 f c61 0.1 f c60 c59 1 f c57 2200pf c71 1 f 7 6 5 80 1 73 72 70 62 59 44 45 48 49 50 53 57 mpx_pll 42 43 63 24 37 14 13 + c2a 0.022 f c2b 100 f
LV25700PM no.a1709-68/68 ps this catalog provides informati on as of june, 2010. specifications and information herein are subject to change without notice. sanyo semiconductor co.,ltd. assumes no responsibil ity for equipment failures that result from using products at values that exceed, even momentarily, rat ed values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-quality high-reliab ility products, however, any and all semiconductor products fail or malfunction with some probab ility. it is possible that these probabilistic failures or malfunction could give rise to accidents or events that c ould endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descr ibed herein, neither warranty nor license shall be granted with regard to intellectual property rights or any oth er rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable for any claim or suits with regard to a third party's intellectual property rights which has resulted from th e use of the technical information and products mentioned above. information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained he rein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor co.,ltd. products described or contained herein are controlled under any of applicable local export contro l laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd.

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