Explanation Of Ic Terminals - Sony STR-W55 Service Manual

IC501 1 ASD0204GF-011-3BA (SYSTEM CONTOROL)
Pin No. Pin name
1 V
DD
2 CLK OUT
3 RDY IN
4 POWER ON / OFF
5 MUTE
6,7 –
8 427LAT
9 LED LAT
10 RESET
11 X2
12 X1
13 IC
14 XT2
15 XT1
16 V
DD
17 BACK UP
18 COM CLK
19 COM DATA
20 ST DATA IN
21 ST CE
22 STEREO
23 TUNED
24 AUB OUT
25 AV
SS
26 –
27 SUFFIX
28 SPE
29 SPE
30 SPE
31 SPE
32 KYE 1
33 KYE 2
34 AV
DD
35 AV REF
36 VOL IN A
37 JOG IN A
38 RDS CLK
39 AUB IN
40 V
SS
SECTION 4

EXPLANATION OF IC TERMINALS

I/O
– Power supply.
O Direct output for communications with HCD-W55.
I/O Direct input / output for communications with HCD-W55.
O L : Relay ON
O Mute output to transistor. L : Mute ON
– Not used.
O Latch output to IC105 (M62427FP).
O Latch output to IC504 (M66313FP).
I Reset terminal.
– Oscillator connection terminal. (5MHz)
– Oscillator connection terminal. (5MHz)
– Ground connection.
– Oscillator connection terminal. (32MHz)
– Oscillator connection terminal. (32MHz)
– Power supply.
I AC Power supply OFF.
O Transfer clock output serial data.
O Serial data output.
I Serial data input from IC 1.
O Chip enable output to IC 1.
I Stereo signal input.
I Tuned signal input.
O Audio bus output.
– Ground.
– Not used.
I Input for model select.
I Spectrum analyzer signal input.
I Spectrum analyzer signal input.
I Spectrum analyzer signal input.
I Spectrum analyzer signal input.
I Key data input (A/D converter).
I Key data input (A/D converter).
– Power supply for anlog.
– Reference voltage for A/D converter.
I Volume encoder input.
I JOG dial encoder input.
I Not uset.
I Audio bus output.
– Ground.
– 6 –
Description