6-10. Ic Pin Function Description - Sony CDP-S3 Service Manual

CDP-S3

6-10. IC PIN FUNCTION DESCRIPTION

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