AR-B8172 User Manual
13
2.7 RST_BTN1
System reset button (2.54mm 1×2PIN connector )
2.8 PWR1
AT power input
RST_BTN1
FUNCTION
SHORT
RESET
OPEN
NORMAL
PIN
SIGNAL
1
+12V
2
GND
3
GND
4
+5V
2.9 SW4
SRAM address selection switch
2.10-11 USB1/USB2
USB 0/1 & 3/4 connector
PIN
FUCTION
PIN
FUCTION
1
SRAMSEG_SEL0
5
CPLD_ADR2
2
SRAMSEG_SEL1
6
CPLD_ADR3
3
CPLD_ADR0
7
ENA_SRAM
4
CPLD_ADR1
8
Reserve
PIN
SIGNAL
PIN
SIGNAL
1
+5V
2
+5V
3
D0-
4
D1-
5
D0+
6
D1+
7
GND
8
GND
9
GND
10
GND
2.12 CN4
External buzzer connector (signal shared from
BZ1)
2.13 CCMOS
Clear CMOS data
PIN
FUNCTION
1
VCC
2
BZ-
3
BZ-
JUMPER
FUNCTION
1-2
(default)
NORMAL
2-3
Clear CMOS