Diagrams; Explanation Of Ic Terminals - Sony CFD-G70 Service Manual

5-1. EXPLANATION OF IC TERMINALS

IC802 CXP83620-031Q SYSTEM CONTROL
Pin No. Pin name
1 WRQ
2 RMC
3 R-MUTE
4 ADJ
5 C-FSEQ
6 C-CE
7 C-CL
8 C-DO
9 C-DI
10 C-DRF
11 C-RES
12 NC
13 SUR ON/OFF
14 R-COUNT
15 R-CLOCK
16 R-DATA
17 R-CE
18 V-LATCH
19 V-DATA
20 V-CLOCK
21 P-CON
22 REG CHK
23 REC
24 SDA
25 – 27 KEY-1 – 3
28 LIGHT CONT
29 MODE CHECK
30 RST
31 EXTAL
32 XTAL
33 VSS
34 VL
35 VLC3
36 VLC2
37 VLC1
38 – 41 COM0 – 3
42 – 59 SEG0 – 17
60, 61 NC
62 INIT
63, 64 WOOFER2, 1
65 VM
66 VH
67, 68 ISS1, 2
69 TAPE
70 RADIO
SECTION 5

DIAGRAMS

I/O
I CD subcorde Q signal input
I Remote control signal input
O Radio mute signal output
O DC 1.7 V output for beep signal (Not used)
I CD FSEQ signal input
O CD chip select signal output
O CD clock signal output
I CD serial data signal input
O CD serial data signal output
I CD DRF signal input
O CD reset signal output
— Not used
O Surround ON/OFF signal output
I Radio count signal input
O Radio control clock signal output
O Radio control data signal output
O Radio latch signal output
O Data latch signal output to LC75342 (VOL IC)
O Data signal output to LC75342 (VOL IC)
O Clock signal output to LC75342 (VOL IC)
O Power control signal output
I Regulator voltage check signal input
I Tape recording function signal input
I/O EEPROM serial data in/out
I Key input terminal of A/D port
O Woofer monitor LED ON/OFF signal output
I Reading specification and MEGA BASS signal input terminal (A/D port)
I System reset signal input
I Crystal oscillator terminal (4.0MHz)
O Crystal oscillator terminal (4.0MHz)
— Ground terminal
O LCD bias control signal output
— LCD bias voltage terminal
— LCD bias voltage terminal
— LCD bias voltage terminal
O LCD common signal output
O LCD segment signal output
— Not used
O Initial signal output
O Woofer function signal output
O Battery check signal output
O TAPE deck motor control signal output
O ISS select signal output
O TAPE function signal output
O Radio function signal output
Description
CFD-G70
17