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CDX-GT121/GT220/GT222
• IC PIN DESCRIPTIONS
• IC501 MB90F045PF-G-9065-SPE2 (SYSTEM CONTROL) (MAIN BOARD (3/4))
Pin No. Pin Name I/O Pin Description
1 AREASEL0 I Destination function setting pin 0
2 AREASEL1 I Destination function setting pin 1
3 AREASEL2 I Destination function setting pin 2
4 AREASEL3 I Destination function setting pin 3
5 BEEP O BEEP signal output to power amplifier
6 CYRIL_SEL I Cyril correspondence discrimination signal input “L”: No correspondence
7 NOSE_SW I Front panel attachment detect signal input “L”: Panel on, “H”: Panel off
8 DIAG I Status signal input from power amplifier
9 VOLATT O Electronic volume attenuate control signal output
10 NCO O Not used. (Open)
11 VSS — Ground pin
12 TUATT O Tuner mute control signal output
13 NSMASK O Noise mask signal output
14 to 22 NCO O Not used. (Open)
23 VCC5 — Power supply pin (+3.3V)
24 EEP_SIO I/O EEPROM bus serial data signal input/output
25 EEP_CKO O EEPROM bus serial clock signal output
26 AMPSTB O Stand-by signal output to power requlation
27 LCD_CE O Chip enable signal output to LCD driver
28 LCD_SO O Serial data signal output to LCD driver
29 LCD_CKO O Serial clock signal output to LCD driver
30 RDS ON O RDS (radio data system) 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 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 Not used in this set. (Pull up)
44 to 48 NCO O Not used. (Open)
49 MD0 I Operation mode setting pin 0 (Pull up)
50 MD1 I Operation mode setting pin 1 (Pull up)
51 MD2 I Operation mode setting pin 2 (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
60 UNISCK O S-BUS clock signal output
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