Intel® Agilex™ Hard Processor System Technical Reference Manual

ID 683567
Date 11/11/2022
Public

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17.6.2.3.1. Example: Buffer Read

If the transmit buffer address is 0x00000FF2, and 15 bytes must be transferred, then the DMA reads five full words from address 0x00000FF0, but when transferring data to the MTL transmit FIFO buffer, the extra bytes (the first two bytes) are dropped or ignored. Similarly, the last three bytes of the last transfer are also ignored. The DMA always ensures it transfers data in 32-bit increments to the MTL transmit FIFO buffer, unless it is the end-of-frame.