Sony XAV-7W Service Manual page 53

• MAIN BOARD IC703 MB90F574APMT-G-388-BND1 (MASTER CONTROLLER)
Pin No. Pin Name
1 COBOX ST
2 to 4 NCO
5 ATT
SYSRST
6
7 NCO
VCC
8
9 NCO
10 TROM-SDA
11 TROM-SCL
12 RX
13 TX
BUS-ON
14
15 BEEP
16 NAVI-ATT
UNISI
17
UNISO
18
UNICLK
19
MVOL RST
20
MVOL DAT
21
MVOL CLK
22
23 NCO
24 SIRCS
25 to 30 NCO
E-VOL-ATT
31
32 NCO
VSS
33
C
34
35 ADSO1
36 ADSO2
37 SHIFT
DVCC
38
DVSS
39
40, 41 NCO
AVCC
42
AVRH
43
AVRL
44
45 AVSS
46, 47
KEYIN0, KEYIN1
48 RC-IN0
49 KEYIN2
50 QUALITY
51 NCO
52 MPTH
53 S-METER
I/O
Connection box connection detection signal input from the display controller
I
"L": connection box no connected, "H": connection box connected
O Not used
O Audio line and power amplifier muting on/off control signal output
O
Reset signal output to the SONY bus interface and display controller "L": reset
O Not used
—
Power supply terminal (+5V)
O Not used
I/O Two-way data EEPROM bus with the tuner unit
I/O EEPROM bus clock signal input/output with the tuner unit
I Input terminal for UART transfer data when writing into internal flash memory data
O Output terminal for UART transfer data when writing into internal flash memory data
Bus on/off control signal output to the SONY bus interface and display controller
O
"L": bus on
O Beep sound drive signal output
I Muting on/off control signal input at voice guide "H": muting on Not used
I Serial data input from the SONY bus interface
O Serial data output to the SONY bus interface
O Serial clock signal output to the SONY bus interface and display controller
O Reset signal output to the monitor internal electrical volume "L": reset Not used
O Serial data output to the monitor internal electrical volume Not used
O Serial data transfer clock signal output to the monitor internal electrical volume Not used
O Not used
I
Sircs remote control signal input
O Not used
O Muting on/off control signal output to the electrical volume "L": muting on Not used
O Not used
—
Ground terminal
—
Connected to coupling capacitor for the power supply
O ADSO control signal output "L": ADSO off/ADSO 1, "H": ADSO 2/ADSO 3
O ADSO control signal output "L": ADSO off/ADSO 2, "H": ADSO 1/ADSO 3
O Oscillation frequency shift signal output to the power control
—
Power supply terminal (+5V) (for D/A converter)
—
Ground terminal (for D/A converter)
O Not used
— Power supply terminal (+5V) (for A/D converter)
I Reference voltage (+5V) input terminal (for A/D converter)
I Reference voltage (0V) input terminal (for A/D converter)
— Ground terminal (for A/D converter)
I Key input terminal (A/D input)
I Rotary remote commander key input terminal (A/D input)
I Key input terminal (A/D input)
I Noise level detection signal input at SEEK mode (A/D input)
O Not used
I Multi-path detection signal input terminal (A/D input) Not used
FM and AM signal meter voltage detection signal input from the tuner unit
I
(A/D input)
Description
"H": muting on
XAV-7W
53