Warm Reset

When PERST_N is asserted, it triggers a warm reset for the PCIe Controller. The PCIe Controller, except sticky registers, undergoes a reset. The rest of the FPGA remains operational.

During a warm reset, the PCIe Controller issues a reset request to soft logic and IP cores connected to it. Your user application must observe the reset handshake, and return a relevant RESET_ACK to allow the PCIe Controller to complete the warm reset procedure.