Aiwa CR-DS800 Service Manual page 8

IC DESCRIPTION
IC, UPD17934A-514
Pin No. Pin Name
1 VAD SELL
2 TM1
3
IF IN
4
5 VDD1
6 PLL REG
7
PLL OUT
8
9 OSC L
10 OSC H
11 GND
12 TEST
13 RESET
14 ST IN
15 E
16 U
17 W
18 POA0
19 POA1
20 IF REQ
21 POWER OUT
22 TU OUT
23 AM OUT
24 FM OUT
25 TV OUT
26 NSB OUT
27 FM/TV OUT
28 SCK
29 SO2
30 SO1
31 BEEP
32 VDD0
33 CAP0
34 CAP1
35 REG0
36 REG1
37 CAP2
38 CAP3
39 REG2
40 COM0
41 COM1
I/O
I "H" is input when power voltage is 3.0 V. "L" is input when power voltage is 1.5 V.
I Not used.
I IF counter input.
— Power suply.
— PLL regulator pin.
O PLL charge pomp output.
I PLL local oscillator (L) input
I PLL local oscillator (H) input
— GND
— Not used.
I Reset input.
I Stereo indicator input
I Destination setting pin. "L" input for Europe.
I Destination setting pin. "L" input for US.
I TV/WEATHER select pin for WIDE specifications
— Not used.
— Not used.
O Outputs "H" when IF output is requested.
O Outputs "H" when tuner, alarm, or timer is turned on.
O Outputs "H" when tuner is turned on.
O Outputs "H" in AM band.
O Outputs "H" in FM band.
O Outputs "H" in TV band.
O Outputs "H" in NSB band.
O Outputs "H" in FM/TV band.
— Not used.
— Not used.
— Not used.
O Beep output
— Power supply.
—
LCD condenser connect pin
—
—
LCD regulator pin
—
—
LCD condenser connect pin
—
— LCD regulator pin
O
LCD common output
O
12
Description