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Ixiasoft
5.9.1. PCI Express
The PCIe RC interface on the development board supports auto-negotiating channel width from x1 to x8 as well as the connection speed of Gen3 at 8 Gbps/lane.
The PCI express end point interface is connected to the FMCB slot. A special PCIE-FMC cable (HDR-181157-01-PCIEC) made by SAMTEC must be plugged into the FMCB slot for the PCIe EP application.
For the PCIe RC application, the PCIE_REFCLK_P/N signal is a 100-MHz differential input that is driven to the daughtercard through the PCIe edge connector. This signal connects directly to a Arria 10 SoC REFCLK input pin pair using DC coupling. The I/O standard is High-Speed Current Steering Logic (HCSL).
The PCI Express edge connector also has a presence detect feature for the motherboard to determine if a card is installed.
Arria 10 SoC Pin Name | Schematic Signal Name | Direction | Description |
---|---|---|---|
Y38 | PCIE_TX_N7 | Output | PCIe RC Channel 7 Transmitter |
Y39 | PCIE_TX_P7 | Output | PCIe RC Channel 7 Transmitter |
Y34 | PCIE_RX_N7 | Input | PCIe RC Channel 7 Receiver |
Y35 | PCIE_RX_P7 | Input | PCIe RC Channel 7 Receiver |
AA36 | PCIE_TX_N6 | Output | PCIe RC Channel 6 Transmitter |
AA37 | PCIE_TX_P6 | Output | PCIe RC Channel 6 Transmitter |
AA32 | PCIE_RX_N6 | Input | PCIe RC Channel 6 Receiver |
AA33 | PCIE_RX_P6 | Input | PCIe RC Channel 6 Receiver |
AB38 | PCIE_TX_N5 | Output | PCIe RC Channel 5 Transmitter |
AB39 | PCIE_TX_P5 | Output | PCIe RC Channel 5 Transmitter |
AB34 | PCIE_RX_N5 | Input | PCIe RC Channel 5 Receiver |
AB35 | PCIE_RX_P5 | Input | PCIe RC Channel 5 Receiver |
AC36 | PCIE_TX_N4 | Output | PCIe RC Channel 4 Transmitter |
AC37 | PCIE_TX_P4 | Output | PCIe RC Channel 4 Transmitter |
AB30 | PCIE_RX_N4 | Input | PCIe RC Channel 4 Receiver |
AB31 | PCIE_RX_P4 | Input | PCIe RC Channel 4 Receiver |
AD38 | PCIE_TX_N3 | Output | PCIe RC Channel 3 Transmitter |
AD39 | PCIE_TX_P3 | Output | PCIe RC Channel 3 Transmitter |
AC32 | PCIE_RX_N3 | Input | PCIe RC Channel 3 Receiver |
AC33 | PCIE_RX_P3 | Input | PCIe RC Channel 3 Receiver |
AE36 | PCIE_TX_N2 | Output | PCIe RC Channel 2 Transmitter |
AE37 | PCIE_TX_P2 | Output | PCIe RC Channel 2 Transmitter |
AD34 | PCIE_RX_N2 | Input | PCIe RC Channel 2 Receiver |
AD35 | PCIE_RX_P2 | Input | PCIe RC Channel 2 Receiver |
AE28 | - | Input | Pull down to Ground, no use |
AE29 | - | Input | Pull down to Ground, no use |