Sony HCD-BX2 - Front Board

36
IC502 TC74HC165AP
– FRONT Board –
IC602 BU2092
1
2 3
4
5 6 7 8
9
10
16 15 14 13 12
11
CK
EFGHQH
D
C B A SERIAL
IN
CLOCK
INHIBIT
SHIFT/
LOAD
GND
QH
VCC
OUTPUT
QH
SERIAL
INPUTABCD
CLOCK
INHIBIT
SHIFT/
LOAD
CLOCK E F G H OUTPUT
QH
PARALLEL INPUTS
PARALLEL INPUTS
1
2 3
4
5 6 7 8 9
10
16 15 14 13 12
11
CONTROL
CIRCUIT
12 BIT
SHIFT
REGISTER
12 BIT
STORAGE
REGISTER
OUTPUT
BUFFER
(OPEN DRAIN)
1718
VDD OE Q11 Q10 Q9 Q8 Q7 Q6 Q5
Q4 Q3 Q2 Q1 Q0
LCK
CLOCK
DATA
VSS