Ic Pin Function - Sony HCD-W550 Service Manual

4-14. IC PIN FUNCTION

• IC101 SYSTEM CONTROL (UPD780016YGF-016-3BA)
Pin No. Pin Name
1 NC
2 LED 1
3 LED 2
4 LED 5
5 LED 6
6 LED 3
7 LED 4
8 NC
9 Test
10 X2
11 X1
12 Vdd
13 XT2
14 XT1
15 Reset
16 NC
17 NC
18 SCOR
19 SOFT TEST
20 AC CUT
21 NC
22 NC
23 Vdd
24 AVdd
25 ADJ
26 A SHUT
27 B SHUT
28 B-HALF
29 KEY A
30 KEY B
31 KEY C
32 ADJ 2
33 AVSS
34 SQ DATA IN
35 NO USE
36 SQ CLK
37 CD-FUNC
38 NC
39 NC
40 VSS
41 LED 20
42 SENSE2
43 COM D IN
44 COM D OUT
45 COM CLK
46 CD POWER
47 CD DATA
48 CD CLK
49 LED 19
50 LED 18
I/O
— Not used.
O LED control.
O LED control.
O LED control.
O LED control.
O LED control.
O LED control.
— Not used.
— Ground.
O X'tal (5MHz).
I X'tal (5MHz).
— 5V.
— Not used.
— Not used.
I Reset signal input.
— Not used.
— Not used.
I CD Q data request.
O Soft operation check port.
I AC power supply check.
— Not used.
— Not used.
— 5V.
— 5V.
I CD adjustment port.
I Reel pulse detection.
I Reel pulse detection.
I Cassette half detection.
I Key input.
I Key input.
I Key input.
— Not used.
— Ground.
I CD data input.
— Not used.
O Clock for data input.
— Not used.
— Ground.
— Ground.
— Ground.
— Not used.
I BD status input.
— Ground.
— Not used.
— Not used.
O CD power.
O CD data output.
O CD clock.
O LED control.
O LED control.
— 40 —
Description