Read Sony ZS-X10 Service Manual online
32
ZS-X10
•
IC Pin Function Description
MAIN BOARD IC802 uPD789478GC-A39-8BT (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
NC
-
Not used
3 to 5
VLC2 to VLC0
-
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
6 to 9
COM0 to COM3
O
Common drive signal output to the liquid crystal display
10 to 26
S0 to S16
O
Segment drive signal output to the liquid crystal display
27
NC (940-CHK)
-
Not used
28
AC-CHK
-
Not used
29
C-DOOR
I
CD lid open/close detect switch input terminal "L": CD lid is closed, "H": CD lid is opened
30
NC (S-ROCK)
-
Not used
31
NC (S-POP)
-
Not used
32
NC (S-JAZZ)
-
Not used
33
NC (S-VOCAL)
-
Not used
34
NC (S-SUR)
-
Not used
35
A-MUTE
O
Audio muting on/off control signal output terminal "H": muting on
36
CD
O
Power on/off control signal output for the CD section "H": power on
37
RADIO
-
Not used
38
AVDD
-
Power supply terminal (+3.3V) (for A/D converter)
39
BTT-CHK-H
I
High voltage (+9V) detection signal input for AC or battery check
40
BTT-CHK-M
I
Middle voltage (+4.5V) detection signal input for battery check
41
REC
-
Not used
42
6V REG
I
Power supply voltage (+6V) monitor input terminal
43
3.3V REG
I
Power supply voltage (+3.3V) monitor input terminal
44, 45
KEY2, KEY1
I
Front and top panel key input terminal (A/D input)
46
MODE CHK
I
Mode check signal input terminal
47
AVSS
-
Ground terminal (for A/D converter)
48
REMOTE
-
Not used
49
TC-PLAY
-
Not used
50
WP/INI
I
Wake up reading signal input terminal
51
LOAD
O
Load control signal output terminal
52
C-SUBSYQ (I)
I
Subcode sync (S0+S1) Q data input from the digital signal processor
53
C-DOUT (I)
I
Serial data input from the digital signal processor
54
C-DIN (O)
O
Serial data output to the digital signal processor
55
C-MCK (O)
O
Serial data transfer clock signal output to the digital signal processor
56
R-COUNT
I
PLL serial count data input from the FM/AM PLL
57
R-DATA
O
PLL serial data output to the FM/AM PLL
58
R-CLK
O
PLL serial data transfer clock signal output to the FM/AM PLL
59
R-LAT
O
PLL chip enable signal output to the FM/AM PLL
60
B-MUTE
O
Tuner muting on/off control signal output to the FM/AM PLL "H": muting on
61
C-BUSY (I)
I
Busy signal input from the digital signal processor
62
C-RW (O)
O
CD-RW detection signal output to the digital signal processor
63
C-LIM SW (I)
I
Sled limit in detect switch input terminal "L": When the optical pick-up is inner position
64
C-RESETX (O)
O
System reset signal output to the digital signal processor "L": reset
65
P-CON
O
Power on/off control signal output terminal "H": power on
66
ESP LED
O
Not used
67
ISS2
-
Not used
68
DBB
O
Megabass on/off control signal output "L": megabass on
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