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3.
Pinouts and Signal Descriptions
3.1.
AB/CD Pin Definitions
The cExpress-BL is a Type 6 module supporting USB 3.0 upgrade signals and DDI channels on the CD connector
All pins in the COM Express specification are described, including those not supported on the cExpress-BL. Those not supported on the
cExpress-BL module are crossed out.
Row A
Row B
Row C
Row D
Pin
Name
Pin
Name
Pin
Name
Pin
Name
A1
GND (FIXED)
B1
GND (FIXED)
C1
GND FIXED)
D1
GND FIXED)
A2
GBE0_MDI3-
B2
GBE0_ACT#
C2
GND
D2
GND
A3
GB
B3
LPC_FRAME#
C3
USB_SSRX0-
D3
USB_SSTX0-
A4
GBE0_LINK100#
B4
LPC_AD0
C4
US
D4
US
A5
GBE0_LINK1000#
B5
LPC_AD1
C5
GND
D5
GND
A6
GBE0_MDI2-
B6
LPC_AD2
C6
USB_SSRX1-
D6
USB_SSTX1-
A7
GB
B7
LPC_AD3
C7
US
D7
US
A8
GBE0_LINK#
B8
LPC_DRQ0#
C8
GND
D8
GND
A9
GBE0_MDI1-
B9
LPC_DRQ1#
C9
USB_SSRX2-
D9
USB_SSTX2-
A10
GB
B10
LPC_CLK
C10
US
D10
US
A11
GND (FIXED)
B11
GND (FIXED)
C11
GND (FIXED)
D11
GND (FIXED)
A12
GBE0_MDI0-
B12
PWRBTN#
C12
USB_SSRX3-
D12
USB_SSTX3-
A13
GB
B13
SMB_CK
C13
US
D13
US
A14
GBE0_CTREF
B14
SMB_DAT
C14
GND
D14
GND
A15
SUS_S3#
B15
SMB_ALERT#
C15
DDI
D15
DDI1_CTRL
A16
S
B16
S
C16
DDI1_PAIR6-
D16
DDI1_CTRLDATA_AUX
A17
SATA0_TX-
B17
SATA1_TX-
C17
RSVD
D17
RSVD
A18
SUS_S4#
B18
SUS_STAT#
C18
RSVD
D18
RSVD
A19
S
B19
S
C19
P
D19
P
A20
SATA0_RX-
B20
SATA1_RX-
C20
PCIE_RX6-
D20
PCIE_TX6-
A21
GND (FIXED)
B21
GND (FIXED)
C21
GND (FIXED)
D21
GND (FIXED)
A22
S
B22
S
C22
P
D22
P
A23
SATA2_TX-
B23
SATA3_TX-
C23
PCIE_RX7-
D23
PCIE_TX7-
A24
SUS_S5#
B24
PWR_OK
C24
DDI1_HPD
D24
RSVD
A25
S
B25
S
C25
DDI
D25
RSVD
A26
SATA2_RX-
B26
SATA3_RX-
C26
DDI1_PAIR4-
D26
DDI
A27
BATLOW#
B27
WDT
C27
RSVD
D27
DDI1_PAIR0-
A28
(S)ATA_ACT#
B28
AC/HDA_SDIN2
C28
RSVD
D28
RSVD
A29
AC/HDA_SYNC
B29
AC/HDA_SDIN1
C29
DDI
D29
DDI
A30
AC/HDA_RST#
B30
AC/HDA_SDIN0
C30
DDI1_PAIR5-
D30
DDI1_PAIR1-
A31
GND (FIXED)
B31
GND (FIXED)
C31
GND (FIXED)
D31
GND (FIXED)
A32
AC/HDA_BITCLK
B32
SPKR
C32
DDI2_CTRL
D32
DDI
A33
AC/HDA_SDOUT
B33
I2C_CK
C33
DDI2_CTRLDATA_AUX-
D33
DDI1_PAIR2-
A34
BIOS_DIS0#
B34
I2C_DAT
C34
DDI2_DDC_AUX_SEL
D34
DDI1_DDC_AUX_SEL
A35
THRMTRIP#
B35
THRM#
C35
RSVD
D35
RSVD
