digital tv demodulator copyright ? 2009 by silicon laboratories 8.24.09 mpeg assp si2165 host_scl host_sda shared front end osc & pll dvb-t/c demod adc_in adc_ip dual agc adc_qn adc_qp 12-bit adc 12-bit adc 8-bit adc dsp equali zer fec pid filter ts i/f p i/f i 2 c switch tun_sda tun_scl gpio ctrl (can or silicon) tuner ts & gpif interface i 2 c i/f rf_agc if_agc rssi gpio0..5 ts_sync ts_val ts_err ts_clk ts_data resetb 1.2, 3.3 v 8 4 mhz xtal: 16,20, 24,27 mhz or si2165 multi-standard dvb-t and dvb-c demodulator description the si2165 is a compact standalone dvb-t/c digital tv demodulator ideally matching silicon labs? si2170/1/2 new hybrid high-performance silic on tuner product family. the analog front-end consists of two adcs with wide dynamic range (12-bit) to allow operation with standard if (~36 mhz), low-if, or zero-if inputs. this enables the use of the si2165 with any tv tuner, either metal can or silicon tuner based. the multi-standard demodulator supports all modes of dvb-t (en 300 744), including hierarch ical modes. the si2165 also supports itu j.83 annex a/ c and dvb-c (en 300 429), including a user-configurable 31-t ap equalizer. in addition to dvb-t's legacy modes, the si2165 also complies with dvb-h (en 300 744 annex f) specificities: 4k fft, extended tps, ?native? and ?in-depth? deinte rleavers. the si2165 is able to receive dvb-h programs in fixed receiver applications (without decoding the additional mpe fec layer). an embedded 32-bit dsp controls device operation. sophisticated on-chip algorith ms ensure optimum reception even under difficult channel conditi ons, such as echoes outside the guard interval, pre-echoes, or strong impulse noise. for ease-of-use, dsp firmware is preloaded into rom (device is immediately active at powerup). nevertheless, there is a possibility of downloading additional patch code via the i 2 c interface (e.g., to adjust the demodulator to unexpected conditions or recept ion impairments). thanks to proprietary features, the si2165 supports ultra-fast channel scanning for vhf/uhf terrestrial and cable dtv channels. for supported tuners, the quickscan algorithm for blindscan is running onto the em bedded dsp (in order to limit the host cpu load) and is provided as a downloadable patch file. serial or parallel master mpeg ts output modes are supported. furthermore, a ts slave parallel m ode is available via a gpif port and provides a glueless interface to silicon labs' mcu devices with embedded usb interface. the user can optionally program a 32-pid hardware filter to reduce the output ts bit rate. an internal i 2 c pass-through logic switch acts as an i 2 c repeater. this provides a ?quiet? i 2 c bus to the rf front end. a maximum of six gener al-purpose inputs/output s are available; three gpios also feature ? / ? and interrupt output capabilities. best-in-class demodulation perform ance is achieved while still maintaining very low-power operation. the si2165 guarantees a low-cost system implementation due to its minimal bom and very small package footprint. features - dvb-t (etsi en 300 744) demodulator & fec decoder - itu j.83 annex a/c and dvb-c (en 300 429) compliant demodulator & fec decoder - nordig unified 2.0, d-book & c-book 4.0 compliant - suitable for low power design: 140 mw (typical, 36 mhz if sampling mode) - dual 12-bit adcs: accept 1 st if, low if, or zero-if inputs - dvb-t channel bandwidth: 5, 6, 7, 8 mhz - dvb-c symbol rate: 1 to 7.2 mbaud - dsp-based synchronization and control with embedded rom code avoids need for c ode download at startup - supports patch code downloads for in-field upgradeability - independent agc controls (for if & rf), ? plus rssi measurement - aci filtering: fixed 8 mhz sa w filter even for 7 mhz channel - advanced performance for sfn networks - impulsive noise pr otection algorithm - ultra fast automatic uhf /vhf band scanning (quickscan) - master ts output modes, parallel or serial ? (with tri-state function) - slave ts parallel output: exter nal device polls data from an embedded fifo, providing a seamless interface to any usb controller. - on-chip pid filtering to reduce ts output bit rate. - up to six gpios - two 5 v tolerant i 2 c control buses (hos t-side, tuner-side) ? with on-chip i 2 c repeater - 4, 16, 20, 24, or 27 mhz clock/crystal reference - 3.3 and 1.2 v power supplies only - very compact qfn-36, 5 x 6 mm, rohs compliant package applications - digital terrestrial and cabl e stb, nim, and idtv set - personal video recorder (dvd or hdd-based) - digital terrestrial and ca ble pc-tv tuner peripheral
digital tv demodulator copyright ? 2009 by silicon laboratories 8.24.09 silicon laboratories and silicon labs are trademarks of silicon laboratories inc. other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. si2165 multi-standard dvb-t and dvb-c demodulator selected electrical specifications parameter min typ max unit general ambient temperature 0 25 85 c power-up time ? ? 10 ms i 2 c speed (host side) <1 ? 400 khz input clock or supported xtal frequency ? 4 1 /16/20/24/27 ? mhz vdd_vcore supply 1.14 1.20 1.26 v vdd_vio supply 2 1.62 1.80 to 3.30 3.60 v vdd_vadc supply 1.14 1.20 1.26 v vddh_vana supply 3.00 3.30 3.60 v input adc (2 x 12-bits) input differential voltage range ? 1 ? vpp zif mode sampling clock 18.5 48 60 mhz if sub-sampling mode clock 18.5 27 32.5 mhz if over-sampling mode clock 37 48 60 mhz system clock ? ? 85 mhz ts output rates serial mode clock (dvb-t or dvb-c mode) ? ? 65 mhz power consumption dvb-t 8 mhz, if mode (adc_clk@56 mhz), parallel ts ? 140 ? mw dvb-c, if mode, sr = 6.9 mbaud , 256 qam (adc_clk@56 mhz), parallel ts ? 120 ? mw total stand-by power consumption ? 13 ? mw notes: 1. clock only. 2. 5 v tolerant i 2 c bus requires vdd_vi o supply set @ 3.3 v. pin assignments 28 27 26 25 24 23 22 21 20 19 adc_ip 29 18 adc_in 30 17 adc_qp 31 16 adc_qn 32 15 gnd sda_mast 33 14 scl_mast 34 13 rssi_adc/clk_out 35 12 gpio_0 36 11 123456 7 8910 ts_data[3]/gpio_4 ts_data[2]/gpio_3 ts_data[1]/gpio_1 ts_data[0]/ts_ser ts_data[6] ts_data[5] ts_data[4]/gpio_5 vdd_vio ts_err/gpio_2 ts_data[7] gnd ts_val/gpif_clk ts_sync/gpif_rdy ts_clk/gpif_ctl xtal_i xtal_o vdd_vcore resetb vdd_vadc vddh_vana addr gnd scl_host agc_rf agc_if gnd sda_host vdd_vcore 5 x 6 mm slp qfn-36 package information
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