Published by on May 15, 2021
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The good alternative was to use the AXI Data Mover. – The transfer commands are delivered by AXI4 Stream. – The status of transfers are delivered back by. The AXI Datamover is a key Interconnect Infrastructure IP which enables high throughput transfer of data between AXI4 memory mapped domain to AXI4- Stream. For you, you are probably looking at AXI Datamover or AXI Central DMA. ” Xilinx provides the AXI Virtual FIFO Controller core to use external.

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Maybe some other ways to achieve similar effect? I would really appreciate more insights getting the datamover to work has been really frustrating.

Also, based on that, I have included a wait state that issues a command ahead of time after the data becomes available. Seems like the reading is getting up to a count of 5 and then not reading anymore data.

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Solved: difference between AXI Datamover and AXI DMA – Community Forums

Could this still be the issue? Embedded Processor System Design: We have detected your current browser version is not the latest one. I was just curious about your experience. ChromeFirefoxInternet Explorer 11Safari. Your suggestions, indeed, solved the issue. Xilinx products are not designed or intended to be fail-safe or for use datamovver any application requiring fail-safe performance; you assume sole risk and dtamover for use of Xilinx products in Critical Applications: Still working on it though.


For the mean time I have to settle with simulation to determine what is going on. I use the regular fifos as I need to cross clock domains and change the data width accordingly to mantain my throughput.

I am receiving a bit value at the rate of 1us. I’m not quite sure why that is happening. I am wondernig if something in the AXI bus in not sequencing correctly. The command word settings are as follows:. I finally managed to get some more insights on what is happening.

We have detected your current browser version is not the latest one. Have you found a solution in the meantime?

Embedded Processor System Design: I was not aware that the status interface had the ability to prevent data from being transferred. Then the validation would move its width down to the datamover. Believe I ran into this before. I have a state machine running for the data that would send a bit data word every time a dstamover value becomes available. However, it works without the Datamover DMA.


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Keep in mind that L1 and L2 cache is probably enabled when the cpu reads or writes 0x so you may only be interacting with cache. Will let you know when I do.

Afterwards, and since I am sending axxi word at a time, I will include the logic to keep on incrementing the SADDR every time I receive a new data word to send. I will need to do that for a maximum ofclock cycles ms. For the first occurrence of each acronym, spelled out the occurrence followed by the acronym. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

As I am connecting a normal fifo to this input, which is daatamover master axi, then I created an AXI fifo, with the correct width, validate, erase and finally with the correct width connect my normal fifo in the place I had it before.

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