Sony CDX-A360, Service Manual

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32
CDX-A360
• IC501 MB90487APF-G-199E1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No. Pin Name I/O Pin Description
1 AREASEL2 I Destination setting pin
2 AREASEL1 I Destination setting pin
3 AREASEL0 I Destination setting pin
4 COL_SW I Illumination color select signal input
5 BEEP O Beep signal output
6 CYRIL_SEL I Cyril select signal input
7 NOSE_SW I Front panel open/close detect signal input
8 DIAG I Power AMP status signal input
9 VOL_ATT O Electronic volume attenuate control signal output
10 NCO O Not used. (Open)
11 VSS — Ground
12 TUATT O Tuner mute control signal output
13 NSMASK O Noise mask signal output
14 ILLUMI_SEL1 I Illumination voltage setting signal input 1
15 ILLUMI_SEL2 I Illumination voltage setting signal input 2
16 to 22 NCO O Not used. (Open)
23 VCC5 — Power supply (+3.3 V)
24 EEP_SIO I/O EEPROM bus serial data input/output
25 EEP_CKO O EEPROM bus serial clock output
26 AMPSTB O Power AMP standby signal output
27 LCD_CE O LCD driver chip enable signal output
28 LCD_SO O LCD driver serial data signal output
29 LCD_CKO O LCD driver serial clock signal output
30 RDS_ON O RDS ON signal output
31 RE_IN0 I Rotary encoder signal input 0
32 RE_IN1 I Rotary encoder signal input 1
33 I2C_CKO O I2C bus serial clock signal output
34 I2C_SIO I/O I2C bus serial data signal input/output
35 DAVDD — A/D converter power supply (+3.3 V)
36 AVRH — A/D converter external reference power supply (+3.3 V)
37 DAVSS — Ground
38 QUALITY I Noise detect signal input
39 VSM I S-meter voltage detect signal input
40 KEY IN1 I Key signal input 1
41 KEY IN0 I Key signal input 0
42 VSS — Ground
43 RC_IN0 I Rotary commander key signal input
44 to 48 NCO O Not used. (open)
49 MD0 I Operation mode setting pin (Pull up)
50 MD1 I Operation mode setting pin (Pull up)
51 MD2 I Operation mode setting pin (Pull down)
52 KEYACK I Key acknowledgment detect signal input
53 TU_ATTIN I Tuner mute zero cross detect signal input
54 BUIN I Back-up power supply detect signal input
55 NCO O Not used. (Open)
56 DAVN I RDS data block synchronized detect signal input
57 NCO O Not used. (Open)
58 UNISI I S-Bus data signal input
59 UNISO O S-Bus data signal output