SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
In EP mode, the PCIe subsystem will generate the PCIE_PTM_VALID_PULSE interrupt to the local CPU after a PTM dialog between the PTM requester (EP) and the PTM responser (RP). The PTM valid interrupt indicates to the CPU in the EP that the local timers have been updated with the timestamp data obtained from the RP. The CPU can read the timer registers inside the EP to determine the current timebase.
The PCIE_PTM_VALID_PULSE interrupt is generated from the PTM_LOCAL_TIMER_OUT_VALID signal from the PCIe core.