SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
This section describes the PCIe subsystem application fields from an environment point of view (external connections).
Table 12-116 describes the SERDES signal names at device level related to PCIe subsystem and specifies their functions.
Device Level Signal | I/O(1) | Description |
---|---|---|
RXN0 | I | PCIe Lane 0 Receive Differential Data (-) |
RXP0 | I | PCIe Lane 0 Receive Differential Data (+) |
TXN0 | O | PCIe Lane 0 Transmit Differential Data (-) |
TXP0 | O | PCIe Lane 0 Transmit Differential Data (+) |
RXN1 | I | PCIe Lane 1 Receive Differential Data (-) |
RXP1 | I | PCIe Lane 1 Receive Differential Data (+) |
TXN1 | O | PCIe Lane 1 Transmit Differential Data (-) |
TXP1 | O | PCIe Lane 1 Transmit Differential Data (+) |
RXN2 | I | PCIe Lane 2 Receive Differential Data (-) |
RXP2 | I | PCIe Lane 2 Receive Differential Data (+) |
TXN2 | O | PCIe Lane 2 Transmit Differential Data (-) |
TXP2 | O | PCIe Lane 2 Transmit Differential Data (+) |
RXN3 | I | PCIe Lane 3 Receive Differential Data (-) |
RXP3 | I | PCIe Lane 3 Receive Differential Data (+) |
TXN3 | O | PCIe Lane 3 Transmit Differential Data (-) |
TXP3 | O | PCIe Lane 3 Transmit Differential Data (+) |
CLKREQn | I/O | PCIe sideband signal for negotiation of L1
Substate entry/exit. The PCIE1_CLKREQn pin operates as an active low open-drain bidirection reference clock request pin. 1 = no request for clock; 0 = request for clock |