Read Sony CFD-S35CP (serv.man3) Service Manual online
22
CFD-S35CP
MAIN BOARD (2/2) IC801 MB90F830NPF-GE1 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
CLK-SHIFT AM
O
Radio AM clock shift switch signal output
2
CLK-SHIFT FM
O
Radio FM clock shift switch signal output
3
I-MP3-REQ
I
CD-DSP MP3 REQ signal input
4
O-MP3-M-MUTE
O
Spindle and sledding motor drive mute control signal output
5
IO-MP3-BUS0
I/O
CD-DSP-MP3 serial data input/output
6
IO-MP3-BUS1
I/O
CD-DSP-MP3 serial data input/output
7
IO-MP3-BUS2 (SO)
I/O
CD-DSP-MP3 serial data input/output
8
IO-MP3-BUS3 (SI)
I/O
CD-DSP-MP3 serial data input/output
9
I-RMC
I
Remote commander receiver data input
10
LID-OPEN
I
CD door open/close switch input “L”: Close
11
TC-PLAY
I
Tape play switch signal input
12
TAPE-REC
I
Tape recording switch signal input
13
NC (GND)
—
Not used (Connected to ground)
14
NC (OPEN)
—
Not used (Open)
15
VCC
—
Power supply (+3.3 V)
16
VSS
—
Ground
17
O-MP3-BUCK (CLK)
O
CD-DSP-MP3 serial transfer clock output
18
O-MP3-CCEN
O
CD-DSP-MP3 chip enable signal output
19
O-MP3-XRSY
O
CD-DSP-MP4 reset signal output
20
O-A MUTE
O
Power AMP mute signal output
21
MEGA BASS
O
Mega bass control signal output
22
ISS-1
O
Tuner beat change signal output
23
ISS-2
O
Tuner beat change signal output
24
O-POWER
O
System power control output “H”: Power ON
25
TU-ON
O
Tuner power supply control signal output
26
O-TU-CE
O
Tuner PLL chip enable signal output
27
O-TU-DI
O
Tuner PLL data output
28
O-TU-CLK
O
Tuner PLL clock signal output
29
I-TU-DO
I
Tuner PLL data input
30
O-TU-MUTE
O
Tuner IF mute signal output
31
SLEEP-LED
O
LCD back light control signal output
32
AVCC
—
Power supply (+3.3 V)
33
O-VOL-DATA
O
Volume command serial data output
34
O-VOL-CLK
O
Volume command serial transfer clock output
35
AVSS
—
Ground
36
I-REG6V-CHK
I
Power supply +6V check signal input
37
NC
—
Not used (Open)
38
I-KEY0
I
Key input
39
I-KEY1
I
Key input
40
I-KET2
I
Key input
41
O-CD
O
CD power supply control signal output
42
I-KEY-WAKE-UP
I
Key wake-up signal input
43
I-CD-CUBSYQ
I
CD-DSP-MP3 sub code block sync signal input
44
VSS
—
Ground
45
I-AC/DC-CHK
I
AC IN check signal input
46
BATT-CHK-H
I
Power supply 9V check signal input
47
BATT-CHK-M
I
Battery protect signal input
48
I-SUFFIX
I
Suffix distinction input
49
EEPROM-SDA
I/O
EEPROM serial data input/output
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