JVC RX-9010VBK Service Manual page 17

BU2092(IC402):PORT EXPANDER
1.Terminal Layout
1
Vss
DATA
2
CLOCK
3
LCK
4
Q0
5
Q1
6
Q2
7
Q3
8
Q4
9
2.Pin Function
Symbol
Pin No.
1 Vss
2 DATA
3 CLOCK
4 LCK
5~16 Q0~Q11
17 OE
18 Vdd
CONTROL
CIRCUIT
Function
I/O
- Connect to GND
I Serial Data input
I Shift Clock of Data
I Latch Clock of Data
O Parallel Data Output
Latch Data L H
OUTPUT ON OFF
I Output Enable
- Power Supply
Vdd
18
OE
17
16 Q11
Q10
15
Q9
14
13 Q8
Q7
12
Q6
11
Q5
10
RX-9010VBK
1-17