CDX-GT572
27
• IC Pin Function Description
IC501 MB90F045PF-G-9060-SPE1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No. Pin Name I/O Description
1 AREASEL0 I Destination setting pin 0 (Fixed at L in this set)
2 AREASEL1 I Destination setting pin 1 (Fixed at L in this set)
3 AREASEL2 I Destination setting pin 2 (L: FM (50k) /MW (9k), H: FM (200k)/MW (10k))
4 AREASEL3 I Destination setting pin 3 (Fixed at L in this set)
5 BEEP O BEEP signal output to power amp IC.
6 COL_SET I Key illumination 2 colors select signal input (L: 1 color, H: 2 color) (Fixed at L in this set)
7 NOSE_SW I Front panel detach detection signal input (L: with panel, H: without panel)
8 DIAG I Status signal input from power amp IC.
9 VOLATT O Attenuator control signal output to electoronic volume IC.
10 CYRIL_SEL I CYRIL select signal input (L: non CYRIL, H: CYRIL) (Fixed at L in this set)
11 VSS — Ground pin
12 TUATT O Tuner mute control signal output
13 NSMASK O Noise mask signal output Not used in this set. (Open)
14 NCO O Not used. (Open)
15 ILLUMI_SEL I Illumination voltage setting pin (L: illumination power supply 9 V)
16 NCO O Not used. (Open)
17 AUX_SW O Not used. (Open)
18, 19 NCO O Not used. (Open)
20 MG_SEL I Mechanism deck select signal input (L: MG-101TC)
21 B-OUT_SEL I Black out select signal input (L: non black out, H: black out) (Fixed at H in this set)
22 DIM_SEL I Dimmer select signal input (H: non auto dimmer)
23 VCC5 — Power supply pin (+3.3V)
24 EEP_SIO I/O Serial data signal input/output for EEPROM communication.
25 EEP_CKO O Serial clock signal output for EEPROM communication.
26 AMPSTB O Stand-by signal output to power amp IC.
27 LCD_CE O Chip enable signal output to LCD drive IC.
28 LCD_SO O Serial data signal output to LCD drive IC.
29 LCD_CKO O Serial clock signal output to LCD drive IC.
30 RDSON O RDS (radio data system) ON signal output Not used in this set. (Open)
31 RS-SEL I
Rear/sub switchable select signal input (L: non rear/sub switchable, H: rear/sub switchable)
(Fixed at L in this set)
32 SA-DATA O Data output for electronic volume IC spectrum analyzer.
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 pin (+3.3V)
36 AVRH — A/D converter external reference power supply pin (+3.3V)
37 DAVSS — A/D converter Ground pin
38 QUALITY I Noise detect signal input
39 VSM I S-meter voltage detect signal input
40 KEYIN1 I Key signal input 1
41 KEYIN0 I Key signal input 0
42 VSS — Ground pin
43 RC_IN0 I Rotary commander key signal input
44 SA_IN I Spectrum analyzer signal input
45 SA_CKO O Spectrum analyzer clock signal output
46 DOOR_IND O DISC IN indicator LED control signal output
47 RE_IN0 I Rotary encoder signal input 0
48 RE_IN1 I Rotary encoder signal input 1
49, 50 MD0, MD1 I Signal input for operation mode designation. (Fixed at H in this set)
51 MD2 I Signal input for operation mode designation. (Fixed at L in this set)
52 KEYACK I Key acknowledgment detect signal input
53 TU_ATTIN I Tuner mute zero cross detect signal input Not used in this set. (Pull down)
54 BUIN I Back-up power supply detect signal input
55 NCO O Not used. (Open)
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