Sony CDX-M700R, Service Manual

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• IC801 MB90574BPMT-256-BND (CDX-M700R) (SYSTEM CONTROL)
IC801 MB90574BPMT-255-BND (CDX-M750) (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 (NCO) O Not used. (Open)
2 (AMSIN) I Inter-music detection input (“H”: inter-music) (Fixed at “L” in this set.)
3 (AMSON) O AMS sens select output (Not used in this set.)
4 SP LATCH O Spectrum analyzer display data latch signal output to display micon.
5 ATT O System attenuate control output
6 SYSRST O Resetting for slave micon of SONY BUS system.
7 (N/R) O Forward/Reverse select output (“L”: forward, “H”: reverse) (Not used in this set.)
8 VCC — Power supply pin (+5 V)
9 (NCO) O Not used. (Open)
10 E2PSIO I/O Tuner EEPROM communication input/output
11 E2PCKO I/O Tuner EEPROM communication input/output
12 FLS SI I Flash micon write data input
13 FLS SO O Flash micon write data output
14 BUS-ON O BUS ON output
15 BEEP O Beep output
16 TELATT I Telephone mute input (“H”: mute ON)
17 UNISI I SONY BUS serial data input
18 UNISO O SONY BUS serial data output
19 UNICKO O SONY BUS serial clock output
20 IFWIDTH O Not used. (Open)
21, 22 (NCO) O Not used. (Open)
23 (MTLOUT) O Tape metal signal output (“H”: metal) (Not used in this set.)
24 SIRCS I Wireless remote data input
25 DSPSI I Digital signal processor serial data input
26 DSPSO O Digital signal processor serial data output
27 DSPCKO O Digital signal processor clock output
28 (DSPPLL) O Not used. (Open)
29 DSPMST O Digital signal processor master slave control output
30 SW SHIFT O Tuner SW (Short Wave) signal output (“H”: SW signal receipt) (Not used in this set.)
31 VOLATT O Electronic volume mute output (“L”: mute ON)
32 TU ATT O Tuner mute output (“H”: mute ON)
33 VSS — Ground
34 C — Power stabilization capacitor pin
35 DSPLAT O Digital signal processor latch output
36 DSPRST O Digital signal processor reset output
37 SHIFT O DC/DC converter oscillation frequency shift output (“H”: shift output)
38 DVCC — VREF input of D/A converter.
39 DVSS — Ground of D/A converter.
40 FP CTRL O Front panel OPEN/CLOSE motor voltage control output
41 (NCO) O Not used. (Open)
42 AVCC — Analog power supply pin (+5 V)
43 AVRH — VREF+ input of A/D converter. (+5 V)
44 AVRL — VREF– input of A/D converter.
45 AVSS — Analog ground
46, 47 KEYIN0, 1 I Key input 0, 1
48 RCIN0 I Rotary commander input 0
49 (NCO) — Not used. (Open)
50 QUALITY I Noise detection input
51 FM AGC I FM suppression level detection input
52 MPTH I Tuner multi path detection input
53 VSM I S-meter voltage detection input