34
CFD-G500/G500L
• IC PIN FUNCTION DESCRIPTION
• IC801
µ
PD789478GC-A24-8BT
System Control (MAIN Board)
Pin No.
Pin Name
I/O
Description
1, 2
NC
–
Not used (open)
3
VLC2
I
LCD bias power supply
4
VLC1
I
LCD bias power supply
5
VLC0
I
LCD bias power supply
6 to 9
COM0 to COM3
O
LCD common signal output
10 to 27
SEG0 to SEG17
O
LCD segment signal output
28, 29
NC
–
Not used (open)
30
WOOFER ON/OFF
O
Woofer on/off control signal output
31
WOOFER 1/2
O
Woofer 1/2 signal output
32
ISS1
O
ISS-1 signal output (not used)
33
ISS2
O
ISS-2 signal output (not used)
34
A-MUTE
O
Audio muting signal output
35
SCL
O
Clock output to the EEPROM
36
SDA
I/O
Data input/output with the EEPROM
37
INIT
O
Initialization setting signal output
38
AVDD
–
Power supply (A/D converter)
39
REC
I
REC signal input from the REC/PB switch (S301) “H”: record mode
40
C-DOOR
I
Detection signal input from the CD OPEN switch (S801) “L”: CD door close
41
SIMUKE
I
Destination setting signal input
42
MODE
I
Model setting signal input
43 to 45
KEY-1 to KEY-3
I
Key signal input from the function keys
46
C-FSEQ
I
CD FSEQ synchronizing signal detection signal input from the IC701
47
AVSS
–
Ground (A/D converter)
48
RMC
I
Data input from the remote control receiver
49
REG CHK
I
Power supply voltage monitoring signal input
50
WP
I/O
WAKE UP reading signal output (interrupt signal in input mode)
51
TC-PLAY
I
TAPE PLAYsignal input from the TC PLAY switch (S971)
52
WRQ
I
CD WRQ signal input from the IC701
53
C-DO
I
CD DSP data input from the IC701
54
C-DI
O
CD DSP data output to the IC701
55
C-CLK
O
CD clock output to the IC701
56
C-CE
O
CD chip enable signal output to the IC701
57
R-MUTE
O
Radio muting signal output “L”: active
58
C-DRF
I
CD DRF signal input from the IC701
59
C-RES
O
CD system reset signal output to the IC701
60
R-COUNT
I
Radio IF count signal input from the IC2
61
R-CLK
O
Radio clock signal output to the IC2
62
R-DATA
O
Radio data output to the IC2
63
R-CE
O
Radio chip enable signal output to the IC2
64
V-CLOCK
O
Clock signal output to the sound processor (IC321)
65
V-DATA
O
Data output to the sound processor (IC321)
66
P-CON
O
Power control signal output
67
TAPE
O
TAPE function signal output to the IC301
68
VL
O
VL control signal output “L”: active
69
NC
I
Not used (connected to ground)
70
XT1
I
Sub system clock oscillator input (32.768kHz)
71
XT2
O
Sub system clock oscillator output (32.768kHz)
Summary of Contents for CFD-G500 - Cd Radio Cassette-corder
Page 52: ...52 CFD G500 G500L MEMO ...
