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MITSUBISHI DIGITAL ASSP MITSUBISHI DIGITAL ASSP
M66261FP M66261FP
6 x 5 CROSSPOINT SWITCH MIXING FUNCTION 6 x 5 CROSSPOINT SWITCH withwith MIXING FUNCTION
DESCRIPTION The M66261 is an integrated circuit consisting of a 6 x 5 cross point switch capable of selecting 30 analog switches with mixing registance respectively by serial control inputs. Using the M66261 with an external standard Op-Amp, 6 analog input signals can be mixed and output to any of 5 outputs freely by serial control inputs. FEATURES * High noise margin ......................... Schmidt trigger circuit built in CKS and LE * Switching and mixing function possible with standard OpAmp. * Excellent crosstalk characteristic .......................... -90dB [fIN = 3kHz, VIN = -10dBV] (typ.) * Line backup function provided in case of a power failure ............................................... (Effective when RD is "L.") * Power supply pins for control circuit (VCC) and for crosspoint switch circuit (VCC(switch)) are provided separately. APPLICATION Line switching with mixing function of telephone and communication equipments.
PIN CONFIGURATION (TOP VIEW)
SHIFT CLOCK INPUT CKS 1 SHIFT DATA INPUT A 2 DIRECT RESET INPUT RD 3 X0 4 SWITCH INPUTS X2 5 X4 6 XOUTO 7 YS0 8 YS1 9 SWITCH OUTPUTS YOUT1 10 YOUT2 11 12 GND
24 23 22 21 20 19 18 17 16 15 14 13
VCC LE LATCH ENABLE INPUT VCC(SWITCH) X1 X3 SWITCH INPUTS X5 NC YS4 YOUT4 YOUT3 SWITCH OUTPUTS YS3 YS2
Outline 24P2N-B
NC terminal : connect to GND
M66261FP
BLOCK DIAGRAM
DIRECT RESET INPUT SWITCH INPUTS
SHIFT CLOCK INPUT SHIFT DATA INPUT A 2
X5 19 YOUT0 YS0 YOUT1 YS1 YOUT2 YS2 YOUT3 YS3 YOUT4 YS4 7 5 8 10 11 9 11 17 13 15 23 14 16 29 17 18 NC 28 22 16 10 4
X4 6
X3 20
X2 5
X1 21
X0 4
LATCH ENABLE INPUT RD LE CKS 3 23 1

3 2 1 0
R LE QL0 QL1 QL2 QL3 QL4 DL0 DL1 DL2 DL3 DL4
CK DIN QS0 QS1 QS2 QS3 QS4 30-BIT SHIFT REGISTER
SWITCH OUTPUTS
9
8
7
6
15
14
13
12
LATCH CIRCUIT (x 30)
Note 1: n
21
20
19
18 QL28 QL29 DL28 DL29 QS28 QS29
QLn
27
26
25
24
6 x 5 CROSSPOINT SWITCH 12 GND 22 VCC (SWITCH) CONTROL CIRCUIT 24 VCC n = 0~29
Note 2 : Connect NC terminal to GND
1
MITSUBISHI DIGITAL ASSP
M66261FP
6 x 5 CROSSPOINT SWITCH with MIXING FUNCTION
FUNCTION Serial data input A is the data input of the first step of 30 BIT SHIFT REGISTER and when latch enable input LE is "L", the signal of A shifts shifting registers one by one when shift clock input CKS changes from "L" to "H", in units of 32 bits. The first 2 bits of shifting data are ignored and the other 30 bits are stored into LATCH CIRCUIT in parallel when latch enable LE changes from "L" to "H". FUNCTION TABLES (1) 30-bit shift register (Note 3)
Operation mode Shift Inputs RD x x A L H CKS LE L L QS0 L H QS1 Q0S0 Q0S0
Analog switches come on in a low-impedance state when the output of the corresponding latch circuit is "H." They come off in a high-impedance stage when the output of the corresponding circuit is "L." When direct reset input RD changes to "L," switches 0 and 29 only come on, and others come off. This function backs up the line if a power failure occurs.
Internal outputs QS2 Q0S1 Q0S1 QS3 Q0S2 Q0S2 ***** ***** ***** QS27 Q0S26 Q0S26 QS28 Q0S27 Q0S27 QS29 Q0S28 Q0S28
(2) Latch circuit [x 30] (Note 3)
Operation mode Reset Shift Inputs RD L H H A x x x CKS x x x LE x H L QL0 H QS0 Q0L0 QL1 L QS1 Q0L1 QL2 L QS2 Q0L2 Internal outputs QL3 L QS3 Q0L3 * * * * * * * * * * * * * * * * * * * * QL27 L QS27 Q0L27 QL28 L QS28 Q0L28 QL29 H QS29 Q0L29
(3) 6 x 5 cross point switch
QLn L H Status of switch No. n OFF ON
Table 1. Latch Output (QLN) and Corresponding Switch No. n
Latch output Switch No. QL0 0 QL1 1 QL2 2 QL3 3 ***** ***** QL27 27 QL28 28 QL29 29
Note 3. : Change from "L" to "H" x : "H" or "L" 0S : The content of shift register before CKS changed Q 0L : The content of latch circuit before LE changed from "H" to "L" Q
OPERATION TIMING CHART
RD

32 bits
32 bits
CKs
A
31 30 29 28 27 Dummy data
1
0
31 30 29 28 27 Dummy data
1
0 Set switch No.
LE
Switch on/off setting
Switch on/off setting
2
MITSUBISHI DIGITAL ASSP
M66261FP
6 x 5 CROSSPOINT SWITCH with MIXING FUNCTION
ABSOLUTE MAXIMUM RATINGS (Ta = -20C to 75C, VCC = VCC (switch) unless otherwise noted)
Symbol VCC VI VO Pd Tstg Supply voltage Input voltage Output voltage RD, A, CKS, LE X0 ~ X5 YS0 ~ YS4, YOUT0 ~ YOUT4 Parameter Conditions Rating -0.5 ~ +7.0 -0.5 ~ VCC +0.5 -0.5 ~ VCC +0.5 -0.5 ~ VCC +0.5 500 -65 ~ 150 Unit V V V mW C
Power dissipation Storage temperature
RECOMMENDED OPERATIONAL CONDITIONS (Ta = -20C to 75C, VCC = VCC (switch) unless otherwise noted)
Symbol VCC VI VO Topr Supply voltage Input voltage Output voltage RD, A, CKS, LE X0 ~ X5 YS0 ~ YS4, YOUT0 ~ YOUT4 Parameter Min. 2.8 0 0 0 -20 Limits Typ. Max. 5.5 VCC VCC VCC 75 Unit V V V V C
Operating temperature
ELECTRICAL CHARACTERISTICS (Ta = -20C to 75C, VCC = VCC (switch) 2.8V ~ 5.5V and GND = 0V unless otherwise noted)
Symbol VIH VIL VT+ VT- RI Parameter "H" Input voltage "L" Input voltage Positive-going threshold voltage Negative-going threshold voltage Input resistance RD, A CKS, LE XnYSm n = 0 ~ 5 m = 0 ~ 4 YOUTm YSm VI (Xn) = 0.5 x VCC (For any one of switches) VI (YOUTm) = 0.5 x VCC (For any one of switches) (1 block) Switches off; = VIH or VIL (for each of Xn, Ysm and YOUTm) VI = VCC or GND = VCC VI = GND VI VCC =2.8V VCC = 5.5V VI Test conditions Min. 0.8 x VCC 0.35 x VCC 0.2 x VCC 15 25 Limits Typ. Max. 0.2 x VCC 0.8 x VCC 0.65 x VCC 40 Unit V V V V k
Rf R IOFF
Feedback resistance
15 0.9
25 1
40 1.1 1.0 200 400 1.0 -1.0
k -- A A A A
On resistance difference (Rf and RI) Off-state leakage current
ICC IIH IIL
Quiescent supply current "H" input current "L" input current
VI = VI (RD, A, CKS, LE)
3
MITSUBISHI DIGITAL ASSP
M66261FP
6 x 5 CROSSPOINT SWITCH with MIXING FUNCTION
TIMING CONDITIONS (Ta = -20C to 75C, VCC = VCC (switch) = 2.8V ~ 5.5V and GND = 0V unless otherwise noted)
Symbol tc tw (CKs) tw (LE) tw (RD) tsu (A-CKs) th (CKs-A) trec (RD-LE) trec (CKs-LE) Parameter Clock cycle Clock pulse width Latch enable pulse width Reset pulse width A setup time before CKS A hold time after CKS LE recovery time after RD LE recovery time after CKS Conditions Limits Min. 1000 400 1000 1000 400 200 1000 1000 Typ. Max. Unit ns ns ns ns ns ns ns ns
(Note 4)
CROSSTALK CHARACTERISTICS
Symbol -- Parameter Crosstalk freqency Test conditions Limits Min. Typ. -90 Max. Unit dB
: VI = -10dBV, fIN = 3kHz, Other input: 1k at terminal Ta = 25C, VCC = +2.5V, GND = -2.5V VCC (switch) = +2.5V Standard Op-Amp: M5228P (connected externally) RL = 10k Crosstalk: 20log 10 VO VI
Note 4: TEST CIRCUIT
Input VCC
PG 50
DUT CL
Output
(1) Pulse generator (PG) characteristics tr = tf = 6ns (10%~90%) VIN = 0 to VCC (2) CL includes stray wiring capacitance and probe input capacitance. (3) Reference voltage Input voltage: 0.5 x VCC Output voltage : 0.5 x VCC
4
MITSUBISHI DIGITAL ASSP
M66261FP
6 x 5 CROSSPOINT SWITCH with MIXING FUNCTION
TIMING CHART
RD
tw(RD)
trec(RD-LE)
tc tw-(CKs) tw+(CKs)
CKs
A tsu(A-CKs) th(CKs-A)
LE
trec(CKs-LE)
tw(LE)
5
MITSUBISHI DIGITAL ASSP
M66261FP
6 x 5 CROSSPOINT SWITCH with MIXING FUNCTION APPLICATION EXAMPLE (Line backup function provided in case of a power failure) When direct reset input RD changes to "L", switches 0 and 29 only come on, and others come off. In a power failure, using the following connection, communication can be maintained between Line and Host phone in case RD is "L". In this time, the voltage 2.8 ~ 5.5V must be supplied on VCC and VCC (switch).
6 x 5 CROSSPOINT SWITCH HOST PHONE MICROPHONE INPUT X0 X1 VCC (SWITCH) X2 X3 X4 GND LINE INPUT X5 29 VCC 0
DOOR PHONE INPUT PLAYBACK INPUT
Inputs
ALAME INPUT
YS0
YS1
YS2
YOUT0
YOUT1
YOUT2
YOUT3
YS3
YOUT4
Vref STANDARD Op-Amp + - + - + - + - + -
6
Outputs
HOST PHONE SPEAKER OUTPUT
LINE OUTPUT
EXTENSION MICROPHONE OUTPUT
DOOR PHONE OUTPUT
RECORDING OUTPUT
YS4

EXTENSION MICROPHONE INPUT
2.8~5.5V

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