Sony HCD-S550 Service Manual page 101

DVD BOARD IC902 PT3000 (MECHANISM DECK CONTROLLER)
Pin No. Pin Name
1 VSS
2 RESET
3 CLK
4 LAT
5 P15
6 P14
7 to 10 P13 to P10
11, 12 P9, P8
13 LATCHO
14 CLKO
15 DO1
16 DI2
17 to 19 P7 to P5
20 P4
21, 22 P3, P2
23, 24 P1, P0
25 DO2
26 DI1
27 PULLUP
28 VCC
I/O
—
Ground terminal
I Reset signal input from the system controller "L": reset
I
Serial data transfer clock signal input from the system controller
I
Serial data latch pulse signal input from the system controller
I
Disc in/out switch input terminal "L": when a disc is ejected
I Disc in/out switch input terminal "L": when a disc is inserted
I
Mode detect rotary encoder input terminal
I
Not used
O
Serial data latch pulse signal output terminal Not used
O
Serial data transfer clock signal output terminal Not used
O
Serial data output terminal Not used
I
Serial data input terminal Not used
O
Not used
O
LED drive control signal output of the disc insert detect sensor "H": LED on
O
Eject motor drive control signal output
O
Loading motor drive control signal output
O
Serial data output to the system controller
I
Serial data input from the system controller
—
Connected to power supply (+5V)
—
Power supply terminal (+5V)
HCD-S550/S880
Description
101