Sony CDX-C8850 - Fm/am Compact Disc Player, Руководство по обслуживанию

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• IC500 MB90574APMT-G-214-BND (SYSTEM CONTROL) (MAIN BOARD)
Pin No. Pin Name I/O Pin Description
1, 2 RE IN0, 1 I Rotary encoder input
3 TIR BUSY O Not used. (Open)
4 TIR PDOWN O Not used. (Open)
5 TIR RST O Not used. (Open)
6 SYS RST O Reset output for SONY BUS slave micon.
7 BUS ON O SONY BUS ON output
8 VCC — Power supply pin (+5 V)
9 DSPSTP O Digital signal processor master clock control output
10 TIR PLAY O Not used. (Open)
11 CSV PLAY O Voice guide sound/Digital signal processor sound select output
12 RX/FLS SI I FLASH write communication input
13 TX/FLS SO O FLASH write communication output
14 FLS WR I FLASH write mode select input
15 BEEP O Beep output
16 CSV ON O CSV control IC power supply control output
17 DSP SI I Serial data input from digital signal processor.
18 DSP SO O Serial data output to digital signal processor.
19 DSP CK O Serial data shift clock output to digital signal processor.
20 UNI SI I SONY BUS serial data input
21 UNI SO O SONY BUS serial data output
22 UNI CK O SONY BUS serial clock output
23 SD IN I Tuner reception signal detection input
24 SIRCS I Wireless remote commander signal input
25 CSV SI I CSV control IC serial data input
26 CSV SO O CSV control IC serial data output
27 CSV CK O CSV control IC serial clock output
28 DSP RST O Digital signal processor reset output
29 ST/MONO I/O Used in conjunction with stereo input/forced monaural output.
30 DSP XMST O Digital signal processor master mode/slave mode select output
31 WIDE O WIDE/NARROW select output
32 NARROW O WIDE/NARROW select output
33 VSS — Ground
34 C — Stabilized capacitor connection pin
35 RAM BU I RAM backup voltage detection input
36 MUTE O Mute control output of audio output.
37 ASEL0 O Digital signal processor analog input source select output
38 DVCC — D/A power supply pin (+5 V)
39 DVSS — D/A ground
40 ASEL1 O Digital signal processor analog input source select output
41 LCD ANG O LCD contrast alignment output
42 AVCC — D/A, A/D power supply pin (+5 V)
43 AVRH — A/D reference voltage input (+5 V)
44 AVRL — A/D reference voltage input (0 V)
45 AVSS — D/A, A/D ground
46 VSM I Tuner S-Meter voltage input
47, 48 KEY IN0, 1 I Front panel key input
49 RC IN0 I Rotary commander key input
50 DST SEL0 I Destination select input (“L” : C9500, “H” : C8850)
51 DST SEL1 I Destination select input
52 QUALITY I Tuner quality voltage input
53 MPT I Tuner multi pass voltage input
54 VCC — Power supply pin (+5 V)