Sony CDP-S3, Service Manual

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CDP-S3
6-10. IC PIN FUNCTION DESCRIPTION
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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”)
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)
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
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
49 T-SENS2 I
Detection input from the disc tray 2 height sensor (IC732)
“H”: disc tray 2 position is chucking position