Read Sony CDP-S3 / MHC-S3 Service Manual online
24
CDP-S3
6-10.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC401 M30620MAA-B31FP (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1 to 7
—
—
Not used (open)
8
BYTE
I
External data bus line byte selection signal input “L”: 16 bits, “H”: 8 bits
Not used (fixed at “L”)
Not used (fixed at “L”)
9
CNVSS
—
To flash memory connector
10
—
—
Not used (fixed at “L”)
11
—
—
Not used (open)
12
RESET
I
Reset signal input from the tuner unit (ST-S3/S5)
13
X-OUT
O
System clock output terminal (16 MHz)
14
VSS
—
Ground terminal
15
X-IN
I
System clock input terminal (16 MHz)
16
VCC
—
Power supply terminal (+5V)
17
NMI
I
Non-maskable interrupt input terminal (fixed at “H” in this set)
18
—
—
Not used (open)
19
SCOR
I
Subcode sync (S0+S1) detection signal input from the CXD3017Q (IC101)
20 to 23
—
—
Not used (open)
24
BU PWM 3
O
RFDC PWM signal output to the CXA2581N (IC103)
25
—
—
Not used (open)
26
BU PWM 2
O
Tracking error PWM signal output to the CXA2581N (IC103)
27
—
—
Not used (open)
28
BU PWM 1
O
Focus error PWM signal output to the CXA2581N (IC103)
29
IIC-CLK
I/O
Communication data reading clock signal input or transfer clock signal output with the tuner unit
(ST-S3/S5)
(ST-S3/S5)
30
IIC-DATA
I/O
Communication data bus with the tuner system (ST-S3/S5)
31
—
—
Not used
32
SQ-DATA-IN
I
Subcode Q data input from the CXD3017Q (IC101)
33
SQ-CLK
O
Subcode Q data reading clock signal output to the CXD3017Q (IC101)
34
RTS1
—
Not used
35
CD-DATA
O
CD decode data output to the CXD3017Q (IC101)
36
SENS
I
Internal status (SENSE) signal input from the CXD3017Q (IC101)
37
CD-CLK
O
Serial data transfer clock signal output to the CXD3017Q (IC101)
38
CD POWER
O
Power on/off control signal output for the CD mechanism deck section
“L”: standby, “H”: power on
“L”: standby, “H”: power on
39
—
—
Not used (open)
40
HOLD
O
Automatic power control hold signal output to the CXA2581N (IC103)
41
—
—
Not used (fixed at “L”)
42
XLT
O
Serial data latch pulse output to the CXD3017Q (IC101)
43
XRST
O
Reset signal output to the CXD3017Q (IC101)
44
LOAD-IN
O
Loading motor drive signal (load-in direction) output the motor driver (IC701)
45
LOAD-OUT
O
Loading motor drive signal (load-out direction) output the motor driver (IC701)
46
OPEN
I
Sub tray load in/out detect switch (S742) input “L”: sub tray is chucking position
47
CLOSE
I
Sub tray load in/out detect switch (S742) input “L”: sub tray slides out of chucking position
48
T-SENS1
I
Detection input from the disc tray 1 height sensor (IC731)
“H”: disc tray 1 position is chucking position
“H”: disc tray 1 position is chucking position
49
T-SENS2
I
Detection input from the disc tray 2 height sensor (IC732)
“H”: disc tray 2 position is chucking position
“H”: disc tray 2 position is chucking position
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