SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
When operating in Root Port mode, a DMA controller internal to the device (outside PCIe subsystem) can perform DMA to and from any remote device located on the PCIe subsystem. The memory address of such devices is available to the software via the PCIe bus enumeration procedure. In addition, the PCIe subsystem has a provision to perform memory address translation on outbound requests. Thus, the software is able to map different memory regions in its memory map to correspond to different addresses (and different access types) on the PCIe side.