Sony CDX-M8800 - Fm/am Compact Disc Player, Руководство по обслуживанию

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CDX-M8800/M8805X
3-1. IC PIN DESCRIPTIONS
• IC303 M30624MGP-124GP (SYSTEM CONTROL) (MAIN Board (3/4))
Pin No. Pin Name I/O Pin Description
1 SIRCS I Remote control data input
2 FP_CTRL — Not used. (Open)
3 NC O Not used. (Open)
4 NC I Not used. (Open)
5 NC O Not used. (Open)
6 BYTE I L fixed terminal
7 CNVSS I Flash write-in signal input
8 XIN I Sub clock input (32kHz)
9 XOUT O Sub clock output (32kHz)
10 RESET I CPU reset signal input
11 OSCOUT O Main clock output (6MHz)
12 VSS — Ground
13 OSCIN I Main clock input (6MHz)
14 VCC1 — Power supply pin (+5V)
15 NMI I Non maskable interrupt signal input
16 NC O Not used. (Open)
17 DAVN I RDS data acquisition detect signal input
18 BU_IN I Back-up power detect signal input
19 NS_MASK O RDS NS MASK signal output
20 BEEP O Beep signal output
21 FLW_IN I OSC frequency shift signal for DC/DC conv.
22 FLW_OUT O OSC frequency shift signal for DC/DC conv.
23 SA_CLK O Spectrum analyzer clock signal output
24 TELATT I telephone mute detect signal input
25 ATT O Mute signal output
26 VOLATT O Electronic volume mute signal output
27 I2C_CKO O Tuner/E-volume BUS clock output
28 I2C_SIO O Tuner/E-volume BUS data output
29 UNI_SO O BUS CONTROL data output
30 UNI_SI I BUS CONTROL data input
31 UNI_CKO O BUS CONTROL clock output
32 TUNERATT O Tuner mute signal output
33 EESIO I/O EEPROM data input/output
34 EECKO O EEPROM clock output
35 NC O Not used. (Open)
36 NC O Not used. (Open)
37 NC O Not used. (Open)
38 NC O Not used. (Open)
39 HOLD I Flash write-in signal input
40 AMP_DIAG I Amplifier diagnosis signal input
41 AMP_STB O Amplifier strobe signal output
42 AMP_ON O Not used. (Open)
43 TUNER_ON O Not used. (Open)
44 WRI/WR I Connected to VCC (+5V)
45 NC O Not used. (Open)
46 NC O Not used. (Open)
47 NC O Not used. (Open)
48 NC O Not used. (Open)
49 NC I Not used. (Open)
50 DST_SEL1 I Destination select signal input
51 DST_SEL2 I Destination select signal input
SECTION 3
DIAGRAMS