Sony CDX-GT414U Service Manual page 29

• IC PIN DESCRIPTION
IC501 MB90F046PF-G-101E1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No. Pin Name
1 AREASEL0
2 AREASEL1
3 AREASEL2
4 B-OUTSEL
5 DIAG
6 AAC SEL
7 BEEP
8 AMPSTB
9 VOLATT
10 FSW IN
11 VSS
12 TUATT
13 NSMASK
14 ILLUMI SEL
15 COL SEL
16, 17 NCO
18 FL CS
19 FL SO
20 FL SCK
21, 22 NCO
23 VCC5
24 EEP SIO
25 EEP CKO
26 RDS ON
27 MC RX
28 MC TX
29, 30 NCO
31 RE IN0
32 RE IN1
33 I2C SCK
34 I2C SIO
35 DAVDD
36 AVRH
37 DAVSS
38 QUALITY
39 VSM
40 KEYIN1
41 KEYIN0
42 VSS
43 RCIN0
44 to 47 NCO
48 AD ON
49 MD0
50 MD1
51 MD2
52 KEYACK
53 TUATTIN
54 BUIN
I/O
I Destination setting pin 0
I Destination setting pin 1
I Destination setting pin 2
I Black-out with/without discrimination signal input
I Status signal input from power amplifier
I AAC play setting signal input
O Beep signal output to power amplifier
O Standby signal output to power amplifier
O Electronic volume attenuate control signal output
I D/D converter oscillator frequency count signal input
— Ground pin
O Tuner mute control signal output
O Noise mask signal output
I Illumination voltage setting signal input
I Two colors change setting signal input
O Not used. (Open)
O Fluorescent indicator tube chip select signal output
O Fluorescent indicator tube serial data signal output
O Fluorescent indicator tube serial clock signal output
O Not used. (Open)
— Power supply pin (+3.3 V)
I/O EEPROM bus serial data signal input/output
O EEPROM bus serial clock signal output
O RDS (Radio Data System) on signal output
I Mechanism microcomputer comunication signal input RX
O Mechanism microcomputer comunication signal output TX
O Not used. (Open)
I Rotary encoder signal input 0
I Rotary encoder signal input 1
O I2C bus serial clock signal output
I/O I2C bus serial data signal input/output
— A/D converter power supply pin (+3.3 V)
— A/D converter external reference power supply pin (+3.3 V)
— Ground pin
I Noise detect signal input
I S-meter voltage detect signal input
I Key signal input 1
I Key signal input 0
— Ground pin
I Rotary commander key signal input
O Not used. (open)
O A/D converter power supply control signal output
I Operation mode setting pin (Connect to VDD.)
I Operation mode setting pin (Connect to VDD.)
I Operation mode setting pin (Connect to VSS.)
I Key acknowledgment detect signal input
I Tuner mute zero cross detect signal input
I Back-up power supply detect signal input
CDX-GT410U/GT414U
Pin Description
"H": Black-out
Tuner on: "L"
Not used in this set.
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