Intel 82600 User Manual
Page 28
User Guide XB1 COM Express Module
XB1 COM Express Module GPIO Usage ICH6
GPIO
Type
Tol.
Function
Description
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GPI 30
I
3.3V
BOARD_CFG2
Board configuration options line 2
GPI 31
I
3.3V
BOARD_CFG3
Board configuration options line 3
GPIO 32
O
3.3V
not used - open (configured as output by BIOS)
GPIO 33
O
3.3V
NC1_OFF#
Enable Ethernet Controller NC1
GPIO 34
I/O
3.3V
ICH_GPIO34
for future use as PLD control signal (either input or output)
GPI 40
I
5V
PG_VR18
Power Good signal from 1.8V voltage regulator
GPI 41
I
3.3V
LPC_DRQCOM#
LPC Port DMA request from COM Express carrier board
GPO 48
O
3.3V
not used - open
GPO 49
OD
1.05V
CPU_PWRGD
CPU Power Good signal
italic blue –> signal available on J-COM
GPIO Usage FWH
XB1 COM Express Module GPIO Usage FWH
GPIO
Type
Tol.
Function
Description
GPI 0
I
3.3V
FWH_ID
FWH Identity: Fixed to GND (indicates FWH #1)
GPI 1
I
3.3V
IDE_CLBID#
IDE 80-pos. Cable Detection Line
GPI 2
I
3.3V
WDOGRST
Last Hardware Reset caused by watchdog
GPI 3
I
3.3V
LSB PCB REV
GPI 4
GPI 3
Rev.
0
0
0
0
1
1
1
0
2
1
1
3+
GPI 4
I
3.3V
MSB PCB REV