User`s guide

ManualsBrandsCongatec ManualsComputer equipmentCOM Express conga-B915

information refer to section 7.5 of this user’s guide.

Table 6 PCI Express Signal Descriptions (general purpose)

Signal Pin # Description I/O PU/PD Comment

PCIE_RX0+

PCIE_RX0-

B68

B69

PCI Express channel 0, Receive Input differential pair. I PCIE Supports PCI Express Base Specication, Revision 1.1

PCIE_TX0+

PCIE_TX0-

A68

A69

PCI Express channel 0, Transmit Output differential pair. O PCIE Supports PCI Express Base Specication, Revision 1.1

PCIE_RX1+

PCIE_RX1-

B64

B65

PCI Express channel 1, Receive Input differential pair. I PCIE Supports PCI Express Base Specication, Revision 1.1

PCIE_TX1+

PCIE_TX1-

A64

A65

PCI Express channel 1, Transmit Output differential pair. O PCIE Supports PCI Express Base Specication, Revision 1.1

PCIE_RX2+

PCIE_RX2-

B61

B62

PCI Express channel 2, Receive Input differential pair. I PCIE Supports PCI Express Base Specication, Revision 1.1

PCIE_TX2+

PCIE_TX2-

A61

A62

PCI Express channel 2, Transmit Output differential pair. O PCIE Supports PCI Express Base Specication, Revision 1.1

PCIE_RX3+

PCIE_RX3-

B58

B59

PCI Express channel 3, Receive Input differential pair. I PCIE Not available. Used by onboard Gigabit Ethernet.

PCIE_TX3+

PCIE_TX3-

A58

A59

PCI Express channel 3, Transmit Output differential pair. O PCIE Not available. Used by onboard Gigabit Ethernet.

PCIE_RX4+

PCIE_RX4-

B55

B56

PCI Express channel 4, Receive Input differential pair. I PCIE Not supported

PCIE_TX4+

PCIE_TX4-

A55

A56

PCI Express channel 4, Transmit Output differential pair. O PCIE Not supported

PCIE_RX5+

PCIE_RX5-

B52

B53

PCI Express channel 5, Receive Input differential pair. I PCIE Not supported

PCIE_TX5+

PCIE_TX5-

A52

A53

PCI Express channel 5, Transmit Output differential pair. O PCIE Not supported

PCIE_CLK_REF+

PCIE_CLK_REF-

A88

A89

PCI Express Reference Clock output for all PCI Express

and PCI Express Graphics Links.

O PCIE PD 49.9R Also referred to as PCIE0_CK_REF+ and PCIE0_CK_REF-

respectively in the COM Express specication and connector A-B

pinout table found in this document.

Table 7 ExpressCard Support Pins Descriptions

Signal Pin # Description I/O PU/PD Comment

EXCD0_CPPE#

EXCD1_CPPE#

A49

B48

ExpressCard capable card request. I 3.3V PU 8k2 3.3V

EXCD0_PERST#

EXCD1_PERST#

A48

B47

ExpressCard Reset O 3.3V PU 10k 3.3V