Read Sony XAV-742 Service Manual online
XAV-742
46
Pin No.
Pin Name
I/O
Description
1
SPEED_IN
I
Speed pulse signal input terminal Not used
2
SIRCS
I
SIRCS signal input from the panel section
3
MHL_OVER
I
MHL over current detection signal input terminal Not used
4
MODEL_SEL2
I
Model setting terminal
5
NCO
-
Not used
6
BYTE
I
External data bus width selection signal input terminal Fixed at “L” (16 bit) in this unit
7
FLASH_W
I
Flash writing terminal “L”: normally operation mode, “H”: writing mode
8
XCIN
I
Low-speed system clock input terminal (32.768 kHz)
9
XCOUT
O
Low-speed system clock output terminal (32.768 kHz)
10
RESET
I
System reset signal input from the reset signal generator and panel section “L”: reset
11
XOUT
O
High-speed system clock output terminal (6 MHz)
12
VSS
-
Ground terminal
13
XIN
I
High-speed system clock input terminal (6 MHz)
14
VCC
-
Power supply terminal (+3.3V)
15
NMI
I
Non-maskable interrupt signal input terminal Fixed at “H” in this unit
16
MODEL_SEL4
I
Model setting terminal
17
BU_IN
I
Back up power supply detection signal input terminal “H”: back up power on
18
MHL_ON
O
MHL power supply on/off control signal output terminal Not used
19
REVERSE_IN
I
Reverse shift position detection signal input terminal “L”: reverse shift position
20
NAVI/XM_Rx
I
Serial data input from the EXT connector for external navigation (E (PAL) model only)
21
VOL_ATT
O
Audio muting on/off control signal output to the electrical volume “L”: muting on
22
NAVI/XM_Tx
O
Serial data output to the EXT connector for external navigation (E (PAL) model only)
23
NAVI_DET
I
External navigation detection signal input terminal “L”: navigation is detected
(E (PAL) model only)
(E (PAL) model only)
24
FSW_OUT
O
External sync signal output to the DC/DC converter, line amplifi er and panel section
25
STB
O
Standby signal output to the power amplifi er “L”: standby
26
BEEP
O
Beep sound output to the power amplifi er
27
I2C_SCK
O
I2C clock signal output to the electrical volume, EEPROM and power amplifi er
28
I2C_SIO
I/O
Two-way I2C data bus with the electrical volume, EEPROM and power amplifi er
29
FLASH_Tx
O
Serial data output to the fl ash writing connector
30
FLASH_Rx
I
Serial data input from the fl ash writing connector
31
F_CLK
O
Serial data transfer clock signal output terminal Not used
32
BUSY
O
Busy signal output terminal Not used
33
HIT2_SDA
I/O
Two-way I2C data bus with the tuner unit
34
HIT2_SCL
O
I2C clock signal output to the tuner unit
35
DIAG
I
Diagnostic signal input from the power amplifi er
36
XM_EN
O
Power supply on/off control signal output terminal Not used
37
ZxZ_ATT
O
ZxZ audio muting on/off control signal output terminal
38
NCO
-
Not used
39
HOLD
I
External data bus terminal at the fl ash writing mode Fixed at “L” in this unit
40
HIT2_RST
O
Reset signal output to the tuner unit “L”: reset
41
MHL/EXT_SEL
O
MHL/EXT selection signal output terminal Not used
42
PARKING_IN
I
Side brake (parking brake) position detection signal input terminal “L”: brake on
43
ACCIN
I
Accessory power supply detection signal input terminal “L”: accessory power on
44
WRI/WR
I
External data bus terminal at the fl ash writing mode Fixed at “H” in this unit
45
MECHA_Tx
O
Serial data output to the DVD mechanism deck block
46
MECHA_Rx
I
Serial data input from the DVD mechanism deck block
47
ATT_CNT
O
Audio muting on/off control signal output terminal Not used
48
MECHA_RTS
I
Request to send signal input from the DVD mechanism deck block
49
ATT
O
System muting on/off control signal output terminal “H”: muting on
50
SERVICE
I
Setting teminal for service “L”: for service, “H”: normal operation
51
EXTATT_XEN
O
External input audio muting on/off control signal output terminal
“L”: disc play, “H”: other source play or source off
“L”: disc play, “H”: other source play or source off
52
Z_MUTE
I
Zero data muting on/off control signal input from the DVD mechanism deck block
“H”: muting on
“H”: muting on
53
SELF_SW
I
Self loading position detection switch input terminal
54
IN_SW
I
Disc insert detection switch input terminal
55
D_SW
I
Chucking end detection switch input terminal
56
MECHA_RESET
O
Reset signal output to the DVD mechanism deck block “L”: reset
MAIN BOARD IC502 R5F3650KCDZ92FB (SYSTEM CONTROLLER)
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