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CDX-GT410U/GT414U
• IC PIN DESCRIPTION
IC501 MB90F046PF-G-101E1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No. Pin Name I/O Pin Description
1 AREASEL0 I Destination setting pin 0
2 AREASEL1 I Destination setting pin 1
3 AREASEL2 I Destination setting pin 2
4B-OUTSEL I Black-out with/without discrimination signal input “H”: Black-out
5 DIAG I Status signal input from power amplifier
6 AAC SEL I AAC play setting signal input
7 BEEP O Beep signal output to power amplifier
8 AMPSTB O Standby signal output to power amplifier
9 VOLATT O Electronic volume attenuate control signal output
10 FSW IN I D/D converter oscillator frequency count signal input
11 VSS — Ground pin
12 TUATT O Tuner mute control signal output
13 NSMASK O Noise mask signal output
14 ILLUMI SEL I Illumination voltage setting signal input
15 COL SEL I Two colors change setting signal input
16, 17 NCO O Not used. (Open)
18 FL CS O Fluorescent indicator tube chip select signal output
19 FL SO O Fluorescent indicator tube serial data signal output
20 FL SCK O Fluorescent indicator tube serial clock signal output
21, 22 NCO O Not used. (Open)
23 VCC5 — Power supply pin (+3.3 V)
24 EEP SIO I/O EEPROM bus serial data signal input/output
25 EEP CKO O EEPROM bus serial clock signal output
26 RDS ON O RDS (Radio Data System) on signal output Tuner on: “L”
27 MC RX I Mechanism microcomputer comunication signal input RX
28 MC TX O Mechanism microcomputer comunication signal output TX
29, 30 NCO O Not used. (Open)
31 RE IN0 I Rotary encoder signal input 0
32 RE IN1 I Rotary encoder signal input 1
33 I2C SCK 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 (+3.3 V)
36 AVRH — A/D converter external reference power supply pin (+3.3 V)
37 DAVSS — 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 RCIN0 I Rotary commander key signal input Not used in this set.
44 to 47 NCO O Not used. (open)
48 AD ON O A/D converter power supply control signal output
49 MD0 I Operation mode setting pin (Connect to VDD.)
50 MD1 I Operation mode setting pin (Connect to VDD.)
51 MD2 I Operation mode setting pin (Connect to VSS.)
52 KEYACK I Key acknowledgment detect signal input
53 TUATTIN I Tuner mute zero cross detect signal input
54 BUIN I Back-up power supply detect signal input
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