Pioneer SX-SW77 Service Manual page 64

1
BU1924FS (MAIN ASSY : IC5701)(SX-SW77 and SX-SW55 only)
• RDS Demodulator
A
Pin Arrangement
QUAL 1 16
RDATA 2 15
VREF 3 14
B
MUX 4 13
VDD1 5 12
VSS1 6 11
VSS3 7 10
CMP 8 9
C
Pin Function
D
No. Pin Name
1 QUAL
2 RDATA
3 VREF
4 MUX
5 VDD1
6 VSS1
7 VSS3
8 CMP
9 T2
E
10 T1
11 VSS2
12 VDD2
13 XI
14 XO
15 NC
16 RCLK
F
64
1
2
Block Diagram
RCLK
MUX 4
NC
XO
3
VREF
XI
VDD1 5
Analog
VDD2
VSS1 6
VSS2
VDD2 12
Digital
T1
VSS2 11
T2
13
XI
Output signal quality
Data
Refference
Composite signal input
Analog power supply
Comparator
Test input
Digital power supply
Crystal OSC
Non connection
Clock
2
3
100kΩ
Anti-aliasing
Filter
PLL
PLL
57 kHz
1187.5 Hz
RDS
Clock
14
XO
Pin Function
SX-SW77
3
4
VSS3 CMP
7 8
8th Switched
Capacitor Filter
Comparator
Biphase
Differential
Decoder
Decoder
Test
10 9
T1 T2
4
16
RCLK
1 QUAL
2
RDATA