Sony XAV-A1 Service Manual page 76

XAV-A1
MAIN BOARD IC101 uPD70F3217GJ-UE/7666AA (SYSTEM CONTROLLER)
Pin No.
Pin Name
1
AVREF0
2
AVSS
3 KEY_PWR
4
DIMMER
5
AVREF1
6
BLANK
7 NC
8
VPP/IC
9
VDD
10
REGC
11 VSS
12
X1
13
X2
14 RESET
15
XT1
16 XT2
17
KEY2
18 BATT
19
CE
20
REM
21
PWR-KEY
22
MD-SI
23 MD-SO
24
MD-CLK
25, 26
NC
27
EQ_CE
28 EQ_DATA
29
EQ_CLK
30
NC
31
E2P_SCL
32 E2P_SDA
33
EVSS
34
EVDD
35
NC
36 RA_SDA
37
RA_SD
38
RA_SCL
39
RA_ST
40, 41 AREA1, AREA2
42
VR_CLK
43
EQ_DATA
44
MPEG_REQ2
45 DVD+B
46
FRQ_CONT1
47
NC
76
I/O
I Reference voltage (+5V) input terminal
- Ground terminal
O Power on/off control signal output for AD5V power "H": power on
O Dimmer control signal output to the inverter controller
I Reference voltage (+5V) input terminal
O Not used
O Not used
- Not used
- Power supply terminal (+5V)
- Connected to the external capacitor Not used
- Ground terminal
I Main system clock input terminal (4 MHz)
O Main system clock output terminal (4 MHz)
System reset signal input from the reset signal generator and reset switch "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it change to "H"
I Sub system clock input terminal (32.768 kHz)
O Sub system clock output terminal (32.768 kHz)
I Monitor key input terminal (A/D input)
I
Battery detection signal input terminal "H": battery on
I
Accessory detection signal input terminal "H": accessory on
I Remote control signal input from the remote control receiver
I SOURCE key input terminal
I Serial data input terminal when data writing
O Serial data output terminal when data writing
O Serial data transfer clock signal output terminal when data writing
O Not used
O Chip enable signal output to the equalizer
O Serial data output to the equalizer
O Serial data transfer clock signal output to the equalizer
O Not used
O Serial data transfer clock signal output to the I/O expanders and EEPROM
I/O Two-way data bus with the I/O expanders and EEPROM
- Ground terminal
- Power supply terminal (+5V)
O Not used
O Radio PLL data output to the AM/FM tuner
I Radio station detection signal input terminal
O Radio PLL clock signal output to the AM/FM tuner
I Stereo detection signal input terminal
I Destination setting terminal
O Serial data transfer clock signal output to the electrical volume
O Serial data output to the electrical volume
O Not used
O Power on/off control signal output for DVD section to the DC/DC converter
O Frequency control signal output for DVD power to the DC/DC converter
O Not used
Description