Sony AIR-SA10 Service Manual page 23

• IC Pin Function Description
MAIN BOARD IC601 uPD78F0526GB (S)-UET-A (SYSTEM CONTROLLER)
Pin No. Pin Name
1 KEY-WAKE
2 AC CUT
3 EROM-DA
4 EROM-CL
5 RESET
6 XT2
7 XT1
8 FLMDO
9 X2
10 X1
11 REGC
12 VSS
13 VDD
14, 15 -
16 AMP-ON
17 (A-MUTE)
18 SA-INT
19 SA-CL
20 SA-DA
21 SA-RST
22 DAC-DA
23 DAC-CL
24 LCD-MOD
25 LCD-INH
26 SA-PA
27 SIRC
28 STB-LED
29 P-ON DET
30 3.3V-ON
31 LCD-LED
32 SA-LED
33 FLAS-SI
34 FLAS-SO
35 LCD-DA
36 LCD-CE
37 LCD-CL
38 AVREF
39 AVSS
40 LEV-DET
41 SA-ID
42 P-MONI
43 SPEC
44 to 46 KEY2 to KEY0
47 3.3V-MONI
48 P-ON
49 A-MUTE
50 BUZZ2
51 BUZZER
52 BUZZ3
I/O
I System wake up signal input terminal
I AC cut on/off detection signal input terminal
I/O Two-way serial data bus with the EEPROM
O Serial data transfer clock signal output to the EEPROM
System reset signal input from the reset switch
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O Sub system clock output terminal (32.768 kHz)
I Sub system clock input terminal (32.768 kHz)
I Internal fl ash memory data writing mode control signal input terminal
O Main system clock output terminal (16 MHz)
I Main system clock input terminal (16 MHz)
- External capacitor connection terminal for regulator
- Ground terminal
- Power supply terminal (+3.3V)
- Not used
O Power amplifi er on/off control signal output terminal
O Power amplifi er muting on/off control signal output terminal
I Interrupt request signal input from the EZW-RT10
O Serial data transfer clock signal output to the EZW-RT10
I/O Two-way serial data bus with the EZW-RT10
O System reset signal output to the EZW-RT10
I/O Two-way serial data bus with the D/A converter
O Serial data transfer clock signal output to the D/A converter
Signal output for discriminating between command and display data to the liquid crystal
O
display driver "L":display data, "H": command
O Reset signal output to the liquid crystal display driver "L": reset
I PAIRING key input terminal
I SIRCS signal input terminal
O LED drive signal output terminal for STANDBY indicator
I AC power detection signal input terminal
Power supply on/off signal output terminal for the EZW-RT10 and D/A converter
O
"H": power on
O LED drive signal output terminal for LCD back light
O LED drive signal output terminal for S-AIR indicator
I Serial data input terminal
O Serial data output terminal
O Serial data output to the liquid crystal display driver
O Chip enable signal output to the liquid crystal display driver
O Serial data transfer clock signal output to the liquid crystal display driver
I Reference voltage (+3.3V) input terminal
- Ground terminal
I Audio level detection signal input terminal
I S-AIR ID switch input terminal
I Power monitor input terminal
Time display setting terminal
I
"L": AEP model, "M": Japanese model, "H": North American model
I Front panel key input terminal
I Power supply voltage detection signal input terminal for the EZW-RT10 and D/A converter
O Main power on/off control signal output terminal
O Muting on/off control signal output terminal
O Buzzer volume control signal output terminal
O Buzzer interval control signal output terminal
O Buzzer volume control signal output terminal
Description
"L": AC cut on
"L": reset
"H": power amplifi er on
"L": reset
Not used
"H": LED on
"H": LED on
Not used
Not used
Not used
AIR-SA10
Not used
"H": Power amplifi er muting on
"H": LED on
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