Read Sony CDX-GT610U / CDX-GT660U / CDX-GT660US Service Manual online
33
CDX-GT610U/GT660U/GT660US
• IC PIN DESCRIPTION
IC501 MB90F046PF-G-102E1 (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
NOSE SW
I
Front panel attachment detect signal input “L”: with panel
6
AAC SEL
I
AAC play setting signal input “H”: AAC
7
BEEP
O
Beep signal output to power amplifier
8
DIAG
I
Status signal input from 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
NCO
O
Not used. (Open)
15
ILLUMI SEL
I
Illumination voltage setting signal input
16
NCO
O
Not used. (Open)
17
AUX SW
O
AUX change over signal output “L”: AUX, “H”: BUS IN
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
USB OVR
I
Overcurrent detect signal input from USB power supply high side switch
22
USB ON
O
USB power supply high side switch control signal output
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
AMPSTB
O
Standby signal output to power amplifier
27
MC RX
I
Mechanism microcomputer comunication signal input RX
28
MC TX
O
Mechanism microcomputer comunication signal output TX
29
NCO
O
Not used. (Open)
30
RDS ON
O
RDS (Radio Data System) on signal output Tuner on: “L” Not used in this set.
31
NCO
O
Not used. (Open)
32
SA DATA
O
Data signal output for electronic volume IC spectrum analyzer
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
44
SA IN
I
Spectrum analyzer data signal input
45
SA CKO
O
Spectrum analyzer clock signal output
46
DOOR IND
O
Disc door indicator control signal output
47
RE IN0
I
Rotary encoder signal input 0
48
RE IN1
I
Rotary encoder signal input 1
49
MD0
I
Operation mode setting pin (Connect to VDD.)
50
MD1
I
Operation mode setting pin (Connect to VDD.)
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