Sony CDX-GT71W Service Manual

41
CDX-GT71W/GT710/GT760
• IC PIN DESCRIPTION
IC303 M3062LFGPA01GP (SYSTEM CONTROL) (MAIN BOARD (3/4))
Pin No. Pin Name I/O Pin Description
1 DST SEL0 I Destination setting pin 0
2 FSW IN I D/D converter oscillator frequency count control signal input
3 UNI SO O SONY bus serial data signal output
4 UNI SI I SONY bus serial data signal input
5 UNI CKO O SONY bus serial clock signal output
6 BYTE I Connect to ground. (Fixed to “L”.)
7 CNVSS I Port for frash write H (Write switch) Normally operation: “L”
8 XCIN I Sub clock signal input (32.768 kHz)
9 XCOUT O Sub clock signal output (32.768 kHz)
10 RESET I Reset signal input
11 XOUT O Main clock signal output (6 MHz)
12 VSS — Ground pin
13 XIN I Main clock signal input (6 MHz)
14 VCC1 — Power supply pin (+3.3 V)
15 NMI I Non-maskable interruption signal input Fixed to “H” for external pull-up resistor.
16 CDM ON I CD mechanism deck power supply control request signal input
17 DAVN I
AEP, UK model: RDS (Radio data system) data block synchronized detect
signal input US, Canadian, E, Chinese model: Not used.
18 TUNER ATT IN I Tuner mute zero cross detect signal input
19 NS MASK O
AEP, UK model: Noise mask signal output
US, Canadian, E, Chinese model: Not used.
20 BEEP O Beep signal output
21 TUNER ATT O Tuner mute signal output
22 EESIO (TU) I/O Tuner EEPROM serial data signal input/output
23 EECKO (TU) O Tuner EEPROM serial clock signal output
24 NC O Not used in this set. (Open)
25 ATT O Mute signal output
26 NC O Not used in this set. (Open)
27 I2C CKO O I2C bus serial clock signal output
28 I2C SIO I/O I2C bus serial data signal input/output
29 TX O Flash write data signal output
30 RX I Flash write data signal input
31 NC O Not used in this set. (Open)
32 NC O Not used in this set. (Open)
33 CD TX O CD flash write data signal output Not used in this set. (Open)
34 CD RX I CD flash write data signal input Not used in this set. (Open)
35 E MUTE O Electronic volume mute signal output
36 E DATA O Spectrum analyzer serial data signal output
37 E CLK O Spectrum analyzer serial clock signal output
38 NC O Not used in this set. (Open)
39 HOLD I
External data bus (HOLD) signal input
Fixed to “L” for external pull-down resistor.
40 AMP DIAG I Amplifier self-diagnostic test function signal input
41 AMP STB O Amplifier standby signal output
42, 43 NC O Not used in this set. (Open)
44 WRI/WR I
External data bus (WRI/WR) signal input
Fixed to “H” for external pull-up resistor.
45 WAKE UP OUT O CD mechanism wake up signal output Not used in this set. (Open)

Sony CDX-GT71W Specifications

General

Brand	Sony
Model	CDX-GT71W
Category	Car Receiver
Language	English