105
HCD-C770/C990
•
DVD BOARD IC902 PT3000 (CHANGER CONTROLLER (MOTOR, SWITCH) )
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
4
LAT
I
Serial data latch pulse signal input from the system controller
5
P15
I
Disc insert (8/12cm) detect switch input terminal “L”: disc insert
6
P14
I
Disc insert (12cm) detect switch input terminal “L”: disc insert Not used
7
P13
I
Disc in (8/12cm) detect switch input terminal “L”: play position
8
P12
I
Disc in (12cm) detect switch input terminal “L”: play position
9
P11
I
Stocker in/out detect switch input terminal “L”: in the midst disc is moving between play
position and stocker except the moment disc in/out from stocker
10
P10
I
Disc position detect switch input terminal
“L”: disc is play position side in the midst disc is moving between play position and stocker,
“H”: disc is stocker side in the midst disc is moving between play position and stocker
11
P9
I
Disc out detect switch input terminal “H”: disc out from play position
12
P8
I
Stocking detect switch input terminal
“H”: in the midst disc is moving between play position and stocker
13
LATCHO
O
Serial data latch pulse signal output to the changer controller (rotary encoder)
14
CLKO
O
Serial data transfer clock signal output to the changer controller (rotary encoder)
15
DO1
O
Serial data output to the changer controller (rotary encoder)
16
DI2
I
Serial data input terminal Not used
17, 18
P7, P6
O
Not used
19, 20
P5, P4
O
Elevator up/down motor drive control signal output
21, 22
P3, P2
O
Rollar motor drive control signal output
23, 24
P1, P0
O
Loading motor drive control signal output
25
DO2
O
Serial data output to the changer controller (rotary encoder)
26
DI1
I
Serial data input from the system controller
27
PULLUP
—
Connected to power supply (+5V)
28
VCC
—
Power supply terminal (+5V)
