Sony MEX 1GP - Giga Panel Radio, Service Manual

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38
MEX-1GP
• IC801 MB90488BPF-G-215E1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No. Pin Name I/O Pin Description
1 ATT O Audio mute signal output
2 to 4 NC — Not used (Open)
5 BEEP O Beep signal output
6 VOL_ATT O Electronic volume ATT control signal output
7 ILL I ILL signal input
8 to 10 NC — Not used (Open)
11 VSS — Ground
12 NC — Not used (Open)
13 NSMASK O NS mask signal output
14 NC — Not used (Open)
15 TU_ATT O Tuner mute signal output
16 MA_SL_RST O MA-SL reset signal output
17 NC — Not used (Open)
18 SL_MA_DAT I SL-MA serial data input
19 MA_SL_DAT O MA-SL serial data output
20 SL_MA_CLK I SL-MA serial transfer clock input
21 RE_0 I Rotary encoder (Volume) signal input
22 RE_1 I Rotary encoder (Volume) signal input
23 VCC+3.3 — Power supply pin (+3.3V)
24 EEP_SIO I/O TU-EEPROM serial data input/output
25 EEP_SCK O TU-EEPROM serial transfer clock output
26 SA_CLK O Spectrum analyzer serial transfer clock output
27 LCD_CE O LCD driver chip enable output
28 LCD_SO O LCD driver serial data output
29 LCD_SCK O LCD driver serial transfer clock output
30 MA_SL_REQ O MA-SL request signal output
31 STB O Power AMP/RDS power standby signal output
32 AUX O Bus audio ON signal output
33 IIC_SCK O IIC bus serial clock output
34 IIC_SIO I/O IIC bus serial data input/output
35 VCC+3.3 — A/D converter power supply pin (+3.3V)
36 AVRH+3.3 — A/D converter reference voltage supply pin (+3.3V)
37 AVSS — Ground
38 KEY_IN0 I Key signal input
39 KEY_IN1 I Key signal input
40 SA_DATA I Spectrum analyzer serial data input
41 RC_IN0 I Remote control signal input
42 VSS — Ground
43 NC — Not used (Open)
44 QUALITY I Tuner noise level input
45 VSM I S-meter signal input
46 DST_SEL I Destination setting pin
47 KEY_ACK I Key acknowledgment detect signal input
48 NC — Not used (Open)
49 MD0 I Operation mode setting pin
50 MD1 I Operation mode setting pin
51 MD2 I Operation mode setting pin
52 NC — Not used (Open)
53 BU_IN I Back-up power supply detect signal input