General Purpose Pci Express Lanes; General Purpose Pcie Signal Definitions; Table 4: General Purpose Pci Express Signal Descriptions - Advantech SOM-5992 Design Manual

2.3 General Purpose PCI Express Lanes

The number of available PCI Express lanes varies with the Module Pin-out Type (refer to Section 2.3.2
'PCI Express Link Configuration '). If the Module supports off-Module x16 PCI Express Graphics, then
PCI Express Lanes 16-31 shall be used to implement this.

2.3.1 General Purpose PCIe Signal Definitions

Table 4 : General Purpose PCI Express Signal Descriptions
Signal Pin#
PCIE_RX0+ B68
PCIE_RX0- B69
PCIE_TX0+ A68
PCIE_TX0- A69
PCIE_RX1+ B64
PCIE_RX1- B65
PCIE_TX1+ A64
PCIE_TX1- A65
Description
PCIe channel 0. Receive Input differential pair.
Carrier Board:
Device - Connect AC Coupling cap
COME to PCIE0 x1 device PETp/n0.
Slot - Connect to PCIE0 x1 Conn pin A16, A17
PERp/n0.
N/C if not used.
PCIe channel 0. Transmit Output differential pair.
Module has integrated AC Coupling Capacitor.
Carrier Board:
Device - Connect to PCIE0 x1 device PERp/n0.
Slot - Connect to PCIE0 x1 Conn pin B14, B15
PETp/n0.
N/C if not used.
PCIe channel 1. Receive Input differential pair.
Carrier Board:
Device - Connect AC Coupling cap
PCIE1 x1 device PETp/n0.
Slot - Connect to PCIE1 x1 Conn pin A16, A17
PERp/n0.
N/C if not used.
PCIe channel 1. Transmit Output differential pair.
Module has integrated AC Coupling Capacitor.
Carrier Board:
Device - Connect to PCIE1 x1 device PERp/n0.
Slot - Connect to PCIE1 x1 Conn pin B14, B15
PETp/n0.
N/C if not used.
２４
I/O
I PCIE
0.1uF near
O PCIE
I PCIE
0.1uF near to
O PCIE
Note
2
2
2
2