PCA-6781 User Manual 52
B.1.24System FAN connector (CN25)
B.1.25SMBUS connector (CN26)
B.1.26HW Fail LED (CN27)
B.2 Jumpers
B.2.1 LVDS Voltage Choose (JP1)
B.2.2 Clear CMOS (J1)
B.2.3 232/422/485 SEL (J2)
Table B.21: System FAN connector (CN25)
Pin Signal Pin Signal
1
FAN_PWM
2
+12 V
3
FAN-SPD
Table B.22: SMBUS connector (CN26)
Pin Signal Pin Signal
1
+5 V
2
+SMB_CLK
3
SMB_DAT
4
GND
Table B.23: HW Fail LED (CN27)
Pin Signal Pin Signal
1
HWM_INT#
2
GND
Table B.24: LVDS Voltage Choose (JP1)
Pin Signal Pin Signal
1-2 +5V 2-3 +3.3V
Table B.25: CLEAR CMOS (J1)
Pin Signal Pin Signal
1-2 Normal 2-3 Clear CMOS
Table B.26: 232/422/485 SEL (J2)
Pin Signal Pin Signal
1-2 RS232 * 2-3 RS422
5-6 RS485