Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs
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Ixiasoft
5.10.7.6.2.1. Example 1: Transmit FIFO Watermark Level = 64
Consider the example where the assumption is made:
DMA burst length = FIFO_DEPTH - DMATDLR
Here the number of data items to be transferred in a DMA burst is equal to the empty space in the transmit FIFO buffer.
Consider the following:
- Transmit FIFO watermark level = DMATDLR = 64
- DMA burst length = FIFO_DEPTH - DMATDLR = 192
- SPI transmit FIFO_DEPTH = 256
- Block transaction size = 960