Hi, I'm currently running the AD9371 No-OS software with the ZC706 board. Based on the behavior of the transmitter using the reference no-os code, it repeatedly transmits the data loaded in the dac_write_custom_data function similar to a cyclic dma configuration. The reference headless.c file however sets the dma type to DMA_PLDDR_FIFO which I have no idea what it does. Where can I find information about this mode of DMA?
What I'm trying to do is to time stamp the exact time when the transmitter is sending a frame (hopefully without much modification) so I'm planning to test whether the DMA_PLDDR_FIFO raises periodic interrupts every end of cyclic transfer. If it doesn't, I would like to know how this dma type work so please direct me to any documentation.