Pioneer AVIC-D3/XU/UC Service Manual page 280

1
TC74VHC221AFTS1
VCC
A
16
Rx/Cx
B
Cx
A
B
C
CLR
1
1a
D
GP1UX51RK
- Block Diagram Chart
Amp Limiter
E
F
280
1
2
1Rx/Cx 1Cx 1Q
13
15 14
VCC
Vref
C1
L
Q
P
Q
N
R
D Q
CK Q
2 4
3
1B 1clr 1q
B.P.F Demodulato Integrator Comparator
AVIC-D3/XU/UC
2
3
2q 2clr
11
12
C2
F/F
5 6
2Q 2Cx 2Rx/Cx
RL
2 3 1
GND VCC vout
3
4
2B 2a
10 9
Vref
H
Q
Q
7 8
GND
- Pin Arrangement Chart
1 2 3
vout GND VCC
4