Onkyo NC 500 - NetTune Receiver, Руководство по обслуживанию

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NC-500
BLOCK DIAGRAM AND DESCRIPTION OF IC - 6
Q781:BU1923
RDS DECODER
Pin descriptions
Pin No. Pin name Symbol Functions Input/Output type
1 QUAL Demodulator quality Type C Good data : High, bad data : Low
Refer to output data timing
6 V
SS1
7
8
2 RDATA Demodulator data
9 T2
Test input Type B Open or connected to ground
10 T1
3 Vref Reference voltage
4 MUX Input
Type E
Type D
1/2 V
DD1
(refer to input/output circuits)
Composite signal input (refer to input/output circuits)
11 V
SS2
Digital power supply 4.5V to 5.5V
12 V
DD2
13 XI
Crystal oscillator Type A
Connects to 4.332MHz oscillator
(refer to input/output circuits)
14 XO
15
(N.C.)
Type C
16 RCLK Demodulator clock 1187.5Hz clock (refer to the timing diagram)
5 V
DD1
Analog power supply 4.5V to 5.5V
CMP Comparator input Type D
C-junction (refer to input/output circuits )
V
SS3
GND
Input / Output circuits
VREF
Type A Type B
Type D
Type C
Type E Type F
10M