Explanation Of Ic Terminals - Sony STR-W77 Service Manual

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IC501 ASD0205GF-015-3BA (SYSTEM CONTOROL)
Pin No. Pin name
1 VDD
2 CLK OUT
3 RDY IN
4 POWER ON / OFF
5 MUTE
6 PROLOGIC LATCH
7 VOL. LATCH
8 427LAT
9 LED LAT
10 RESET
11 X2
12 X1
13 IC
14 XT2
15 XT1
16 TE VDD
L 13942296513
17 BACK UP
18 COM CLK
19 COM DATA
20 ST DATA IN
21 ST CE
22 STEREO
23 TUNED
24 AUB OUT
25 AVSS
26 PROLOGIC. RY
27 SUFFIX
28 SPE
29 SPE
30 SPE
31 SPE
32 KYE 1
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33 KYE 2
34 AVDD
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35 AV REF
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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
O Latch output to IC3001 (LA2785).
O Latch output to IC2002 (TC9210P).
O Latch output to IC105 (M62427FP).
O Latch output to IC504 (M66313FP-200C).
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.
O Rear and center speaker relay ON/OFF control.
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).
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– Power supply for anlog.
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– Reference voltage for A/D converter.
– 8 –
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