Com Express Board-To-Board Connectors - ADLINK Technology COM Express Express-BASE7 User Manual

6.4.

COM Express Board-to-Board Connectors

Signals and Pinout for
COM Express Type 7
The Express-BASE7 is a Type 7 module supporting up to 32 PCIe lanes and 10G Ethernet on the CD connector
and NC-SI on the AB connector. In the table below, all standard pins of the COM Express specification are
described, including those not supported on the Express-BASE7.
Row A
Pin Name
A1 GND (fixed)
A2 GBE0_MDI3-
A3 GBE0_MDI3+
A4 GBE0_LINK100#
A5 GBE0_LINK1000#
A6 GBE0_MDI2-
A7 GBE0_MDI2+
A8
GBE0_LINK#
A9 GBE0_MDI1-
A10 GBE0_MDI1+
A11 GND (fixed)
A12 GBE0_MDI0-
A13 GBE0_MDI0+
A14 GBE0_CTREF
A15 SUS_S3#
A16 SATA0_TX+
A17 SATA0_TX-
A18 SUS_S4#
A19 SATA0_RX+
A20
SATA0_RX-
A21 GND (fixed)
A22 PCIE_TX15+
A23 PCIE_TX15-
A24 SUS_S5#
A25 PCIE_TX14+
12
Table 1: Express-BASE7 AB/CD Pin Definitions
Row B
Pin Name
B1 GND (fixed)
B2 GBE0_ACT#
LPC_FRAME#
B3
/ESPI_CS0#
LPC_AD0
B4
/ESPI_IO_0
LPC_AD1
B5
/ESPI_IO_1
LPC_AD2
B6
/ESPI_IO_2
LPC_AD3
B7
/ESPI_IO_3
LPC_DRQ0#
B8
/ESPI_ALERT0#
LPC_DRQ1#
B9
/ESPI_ALERT1#
LPC_CLK
B10
/ESPI_CK
B11 GND (fixed)
B12 PWRBTN#
B13 SMB_CK
B14 SMB_DAT
B15 SMB_ALERT#
B16 SATA1_TX+
B17 SATA1_TX-
SUS_STAT#
B18
/ESPI_RESET#
B19 SATA1_RX+
B20
SATA1_RX-
B21 GND (fixed)
B22 PCIE_RX15+
B23 PCIE_RX15-
B24 PWR_OK
B25 PCIE_RX14+
D1
C1
B1
A1
Row C
Pin Name
C1 GND (fixed)
C2 GND
C3 USB_SSRX0-
C4 USB_SSRX0+
C5 GND
C6 USB_SSRX1-
C7 USB_SSRX1+
C8
GND
C9 USB_SSRX2-
C10 USB_SSRX2+
C11 GND (fixed)
C12 USB_SSRX3-
C13 USB_SSRX3+
C14 GND
C15
10G_PHY_MDC_SCL3
C16
10G_PHY_MDC_SCL2
C17 10G_SDP2
C18 GND
C19 PCIE_RX6+
C20
PCIE_RX6-
C21 GND (fixed)
C22 PCIE_RX7+
C23 PCIE_RX7-
C24 10G_INT2
C25 GND
D110
C110
B110
A110
Row D
Pin Name
D1 GND (fixed)
D2 GND
D3 USB_SSTX0-
D4 USB_SSTX0+
D5 GND
D6 USB_SSTX1-
D7 USB_SSTX1+
D8
GND
D9
USB_SSTX2-
D10 USB_SSTX2+
D11 GND (fixed)
D12 USB_SSTX3-
D13 USB_SSTX3+
D14 GND
D15
10G_PHY_MDIO_SDA3
D16
10G_PHY_MDIO_SDA2
D17 10G_SDP3
D18 GND
D19 PCIE_TX6+
D20
PCIE_TX6-
D21 GND (fixed)
D22 PCIE_TX7+
D23 PCIE_TX7-
D24 10G_INT3
D25 GND
Connectors, Pinouts and Jumpers
C D
A B