11
Chapter 2
HARDWARE INSTALLATION
User's Manual |
WL9A3
X
Assembly
4. Inspect whether the gaps between the module and the stand-offs all close up. It is
highly recommended that the module be removed and installed again following the pre-
vious steps when there is discernable gap.
5. Place the CPU cooler / Heatsink, onto the module while making sure the screws on the
cooler align with the screw holes on the module. The thermal interface metal under-
neath the cooler should also sit directly on top of the CPU chipset on the module. Use
a screw driver to fasten the screws.
X
I/O Connectors
Board-to-board Connector
The board-to-board connector is located at the bottom side of the COM Express module. Two
rows (row A & B) of pins and their signals are specified as listed below.
Row A
Row B
A1
GND (FIXED)
B1
GND (FIXED)
A2
GBE0_MDI3-
B2
GBE0_ACT#
A3
GB
B3
LPC_FRAME#/ESPI_CS0#
A4
B4
LPC_AD0/ESPI_IO_0
A5
GBE0_LINK1000#
B5
LPC_AD1/ESPI_IO_1
A6
GBE0_MDI2-
B6
LPC_AD2/ESPI_IO_2
A7
GB
B7
LPC_AD3/ESPI_IO_3
A8
GBE0_LINK#
B8
LPC_DRQ0#/ESPI_ALERT0#
A9
GBE0_MDI1-
B9
LPC_DRQ1#/ESPI_ALERT1#
A10
GB
B10
LPC_CLK/ESPI_CK
A11
GND (FIXED)
B11
GND (FIXED)
A12
GBE0_MDI0-
B12
PWRBTN#
A13
GB
B13
SMB_CK
A14
GBE0_CTREF
B14
SMB_DAT
A15
SUS_S3#
B15
SMB_ALERT#
A16
S
B16
S
A17
SATA0_TX-
B17
SATA1_TX-
A18
SUS_S4#
B18
SUS_STAT#/ESPI_RESET#
A19
S
B19
S
A20
SATA0_RX-
B20
SATA1_RX-
A21
GND (FIXED)
B21
GND (FIXED)
A22
USB_SSRX0-
B22
USB_SSTX0-
A23
US
B23
US
A24
SUS_S5#
B24
PWR_OK