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.
|Published (Last):||6 December 2015|
|PDF File Size:||7.33 Mb|
|ePub File Size:||3.33 Mb|
|Price:||Free* [*Free Regsitration Required]|
The VHDL code now does the following: However, it works without the Datamover DMA.
I will need axo do that for a maximum ofclock cycles ms. Afterwards, and since I am sending bit 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.
Believe I ran into this before.
However, Asi have that wait state going up to 70 clock cycles before zxi is sent and still same behaviour. ChromeFirefoxInternet Explorer 11Safari. After that I just use a pointer to read out the contents of memory location 0x Though in simulation I havent gotten to see any datamover responses.
Certain products are subject to the terms and conditions of the Limited Warranties which can be viewed at http: The VHDL code now does the following:.
Actually I do disable cache in my code before reading the memory location simply by including the following:. Any feedback regarding my three questions is apreciated.
I use the regular fifos as I need to cross clock domains and change the data width accordingly to mantain my throughput. Datamver thanks to your sugestion, I tried once more with no result.
I recognize that I am writing the values all to the same location so I would see the last value I would write, but that is not happening either. For the mean time Axl have to settle with simulation to determine what is going on.
All forum topics Previous Topic Next Topic.
For the datamover I have an independent state machine for the cmd AXIS master that keeps on switching between idle and write states. I have a state machine running for the data that would send a bit data word every time a new value becomes available.
We share info about use of our site with social media, ads and analytics partners.
datwmover Any ideas as to what might be causing this behavior? See details or close this message. I’m sorry for the extra late reply, I was away from the lab for several weeks.
Xilinx AXI Datamover | IP Catalog
I setup the datamover in S2MM basic mode mhs attached as well. I looked into it again and seems I finally managed to get it somewhat working. I went to seek external help since nobody on this forum had any useful suggestions. Could this still be the issue? We have detected your current browser version is not the latest one. I did tried the Validation, and even it could synthesize, just with the warning about the different width. Datamoer products datamovet not designed or intended to be fail-safe or for use in any application requiring fail-safe performance; you assume sole risk and liability for use of Xilinx products in Critical Applications: If you don’t use the sts busses inside your design i.
Embedded Processor System Design: It’s the mechanism to propagate various parameters like data width. dattamover
AXI interconnect and DataMover – Community Forums
I’m not quite sure why that is happening. As a result, I created a bit value that is a concatenation of the bit along with a bit count which is the value I am sending to datamver datamover DMA over AXI-Stream. In addition, although I did try different addresses I am starting to wonder if the addresses I am choosing are being overwritten by something else although I highly doubt.
I connected manually each signal from two AXI interfaces from datamover to each signal in one AXI interface and it worked so the rest of my design is finebut I dubt it’s a good practise. Still working on it though.