在AXI数据传输过程中,主要涉及到窄位宽数据传输(Narrow Transfer)、非对齐传输(Unaligned Transfer)以及混合大小端传输(mix-endianness)等问题。 (1)Narrow Transfer 当本次传输中数据位宽小于通道本身的数据位宽时,称为窄位宽数据传输,或者直接翻译成窄传输。 在窄位宽写传输中,主机需要告知从机数据通道中哪些字节是有...
i am sending data "NEWDATAA" which is 8 bytes. and starting address is 5, which is unaligned address then whether my data is loss or not . please explain how the whole transfer will happens. how the strobe will works. is my data start with aligned address of 4 or start ...
Then, I asked the datamover for an unaligned transfer from address 0x4 with a size of 1024bytes. The datamover splits the transfer as follow on the AXI read channel: 1st transfer from 0x4 with a size of 512 bytes (32x128bits) 2nd transfer from 0x200 with a size of 512 bytes (32x12...
Unaligned data transfer support can be enabled by enabling Enable un-aligned addressing access parameter. In DMA PCIe mode, the SSGDMA IP uses the PCIe semantic of First DW Byte-enable and Last DW Byte-enable to request data. In DMA SoC mode, the SSGDMA IP Host AXI-4 interface supports ...
I used the DDR3 DMC IP v1.4.2 in my current project. But while doing the data reading, the observed behavior is different from what I do expect basing on the AXI protocol. As shown in the first snapshot, for a 32-bits sized transfer, the second transfer starts from the middle ...
Unaligned data transfer support can be enabled by enabling Enable un-aligned addressing access parameter. In DMA PCIe mode, the SSGDMA IP uses the PCIe semantic of First DW Byte-enable and Last DW Byte-enable to request data. In DMA SoC mode, the SSGDMA IP Host AXI-4 interface supports ...