Sony XM-S400D Service Manual page 13

• IC Pin Function Description
MAIN BOARD IC508 R5F1037AANA (SYSTEM CONTROLLER)
Pin No. Pin Name
1 /RESET
2 BU_IN
3 REM_IN
4 SP_IN
5 Vss
6 Vdd
7 LED_ON
8 AMP_STBY
9 AMP_MUTE
10 AMP_FAULT
11 AMP_SCL
12 AMP_SDA
13 INTP3
14 to 17 NC
18 TEMP_POW1
19 TEMP_POW2
20 TEMP
21 TEMP_AMP
22 MUTE
23 DCDC_ON
24 TOOL0
I/O
I Reset signal input terminal
I Battery voltage detection signal input terminal
I Remote detection signal input terminal
I Audio detection signal input terminal
- Ground terminal
- Power supply terminal (+3.3V)
O POWER PROTECT indicator LED drive signal output terminal
O Standby signal output to the power amplifi er
O Muting on/off control signal output to the power amplifi er
I Fault detection signal input from the power amplifi er
O I2C clock signal output to the power amplifi er
I/O Two-way I2C data bus with the power amplifi er
O Muting on/off control signal output terminal
- Not used
I Temperature measurement terminal
I Temperature measurement terminal for power supply section (A/D input)
I Temperature measurement terminal (A/D input)
I Temperature measurement terminal for amplifi er section (A/D input)
O Muting control signal output terminal
O Power on/off control signal output terminal for DC/DC converter
I/O Firmware update mode setting terminal
Description
"L": reset Fixed at "H" in this unit
"L": over voltage
"L": remote on
"L": standby
"H": muting on
"L": fault
"L": muting on
Not used
Not used
"L": update mode
XM-S400D
"H": LED on
"H": power on
Fixed at "H" in this unit
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