30
CDX-GT41UW/GT410U/GT460U/GT460US
• 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
4
B-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 Not used in this set.
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” Not used in this set.
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 Not used in this set.
54
BUIN
I
Back-up power supply detect signal input
