Sony CDX-GT71W Service Manual page 41

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