JVC MX-J570V Service Manual page 54

MX-J570V/MX-J680V
BU4094BCF (IC303,IC304) : Serial to parallel port extension
1.Pin layout
1
STTA
16
2
SDATA
15
3
SCK
14
4
BIAS1
13
5
BIAS2
12
6
BIAS3
11
7
RECB
10
8
DG
9
1-54
VDD
CE
DATA
RECH
SOL-RP
CLOCK
MOTOR
RMUTE
QS'
QS
STROBE
OUTPUT
ENABLE
2.Block diagram
2
8-STAGE
3
SHIFT REGISTER
1
8-BIT
LATHES
15
3-STATE
OUTPUTS
Q1
PARALLEL OUTPUT
10
Q's
SERIAL
9
OUTPUT
Qs
Q8