Sony HCD-S550 - Page 101

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