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– 13 –
Pin No.
Pin name
I/O
Description
1 – 19
SEG 18 – 0
O
LCD segment output.
20 – 23
COM 3 – 0
O
LCD common output.
24
VLC1
I
LCD drive deviced voltage input.
25
VLC2
I
LCD drive deviced voltage input.
26
VLC3
I
LCD drive deviced voltage input.
27
VL
I
LCD drive deviced voltage input.
28
RMC
–
Not used (Open).
29
SCOR
I
CD SCOR signal input.
––––––
30
TX
I
Sub clock input (32,768kHz).
31
TEX
O
Sub clock output (32,768kHz).
––––––––
32
RST
I
System reset input.
33
NC
–
Not used (Open).
34
V
DD
–
Power supply.
35
KEY1
I
Key input.
36
KEY2
I
Key input.
37
KEY3
I
Key input.
38
KEY4
I
Key input.
39
INIT
O
Initial output.
40
Destination
I
Destination select input.
41
9k/10k
I
9k/10k switching detection.
42
REG-CHK
I
Regulator check input.
43
NC
–
Not used (Open).
44
C-SQCK
O
Sub-code Q data reading clock output.
45
C-SENSE
I
Sens input from CD DSP (IC702).
46
C-SQSO
I
Sub-code Q data input.
47
A-MUTE
O
Audio mute output.
48
V-DATA
O
Serial data output to electrical volume (IC351).
49
V-CLK
O
Serial clock output to electrical volume (IC351).
50
V-CE
O
Chip enable output to electrical volume (IC351).
51
REG-CON
O
Regulator ON/OFF control.
52
TAPE
O
Function select signal output. “H” : Tape
––––––––––––––
53
RADIO
O
Radio B+ ON/OFF control.
––––––
54
CD
O
CD B+ ON/OFF control.
55
REC
I
REC signal input. “H” : REC, “L” : PB
56
CD-DOOR
I
CD door open/close detect.
57
R-COUNT
I
Radio count data input from PLL (IC3).
58
R-ST
I
Radio stereo signal input from PLL (IC3).
59
C-MUTE
O
CD mute output.
60
PA-CON
O
Power amp (IC305) control output.
61
WP
I
Wake-up signal input terminal.
–––––––––––––––
62
T-PLAY
I
Tape play detect.
63
C-XRST
O
Reset output for CD (IC701, IC702, IC704).
64
C-DATA
O
Serial data output for DSP (IC702).
65
C-CLK
O
Serial clock output for DSP (IC702).
SECTION 5
DIAGRAMS
5-1. EXPLANATION OF IC TERMINALS
IC801 CXP50716-080Q (SYSTEM CONTROL)
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