SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
The below Table 24-493 shows the device integrated PCI Express subsystem interface signals to external PCIe devices.
| Device Level Signal Name | I/O(1) | Description | Reset Value |
|---|---|---|---|
| pcie_txp0 | O | TX output of the PCIe port 0 PHY differential transmission line (positive by default) Section 24.9.3 | 0 |
| pcie_txn0 | O | TX output of the PCIe port 0 PHY differential transmission line (negative by default) Section 24.9.3 | 0 |
| pcie_rxp0 | I | RX input of the PCIe port 0 PHY differential reception line (positive by default) Figure 24-166 | HiZ |
| pcie_rxn0 | I | RX input of the PCIe port 0 PHY differential reception line (negative by default) Figure 24-166 | HiZ |
| usb_txp0 | O | TX output of the PCIe port 0 PHY differential transmission line (positive by default) Section 24.9.3 | 0 |
| usb_txn0 | O | TX output of the PCIe port 0 PHY differential transmission line (negative by default) Section 24.9.3 | 0 |
| usb_rxp0 | I | RX input of the PCIe port 1 PHY differential reception line (positive by default) Figure 24-166 | HiZ |
| usb_rxn0 | I | RX input of the PCIe port 1 PHY differential reception line (negative by default) Figure 24-166 | HiZ |
| ljcb_clkp | I/O | Differential clock positive input or output | HiZ |
| ljcb_clkn | I/O | Differential clock negative input or output | HiZ |
| PCIE_B1C0_MODE_SEL(1) | PCIE_B0_B1_TSYNCEN(1) | Port 0 | Port USB |
|---|---|---|---|
| 0x0 (C0) | 0 | PCIESS1 lane 0 | PCIESS2 lane 0 |
| 0x2 (USB) (default) | 0 | PCIESS1 lane 0 | USB3.0 |
| 0x3 (USB) | don't care | PCIESS1 lane 0 | USB3.0 |
| 0x1 (B1) | 1 | PCIESS1 lane 0 | PCIESS1 lane 1 |
For more information on the interface between PCIe_SS controller and PCIe_PHY, see Section 26.4.4.1, PCIe Shared PHY Subsystem Block Diagram, and Section 26.4.4, PCIe Shared PHY Subsystem Functional Descriptions in Section 26.4, PCIe Shared PHY Subsystem.