01-25-2011 05:23 AM
Has anyone used Digilent's Atlys board?
Keen on knowing DDR b/w obtained and MIG settings suitable to use that memory.
There's no reference design yet
08-01-2013 03:06 PM
Well regarding this ATLYS board from Digilent, memory is now MIRA manufactured (no information or datasheet through internet), and MIG is not able to configure a suitable MCB for MIRA: ATLYS memory is not supported by Xilinx MIG, and you need to "patch" file generated for MICRON. It's a bull**bleep** more like a FPGA board, this ATLYS.
I strongly recommend NEVER USE DIGILENT BOARDS, because you never know what compnents you will find on them. And probably their cmponents would not be supported by original Xilinx development tools like MIG.
I'm a very disappointed ATLYS customer (enginner of telecommunications) with an ATLYS ready to throw it away to trash.
I recommend an original SP601 or SP605 instead.
08-22-2013 05:12 AM
08-22-2013 05:14 AM
DIGILENTINC (USA) recommends using ELPIDA equivalent part, but DIGILENT.ro recommends using MICRON equivalent part.
It's a crazy and stupid change just to increase DIGILENT benefits.
08-22-2013 09:27 AM - edited 08-22-2013 09:27 AM
FYI - Micron recently bought Elpida. Access to Elpida datasheets had been a problem in the past, maybe less of a problem post-merger with Micron.
DRAM is a tricky business, and product availability is often a problem. I would not be too quick to judge Digilent as evil or sinister. I would not be surprised if Digilent contracts their component purchasing and board assembly, in which case a supplier made the decision to replace a Micron or Elpida component with another equivalent part. This is done every day, and you should be able to use the original Elpida or Micron device profile to 'build' your design.
-- Bob Elkind
11-06-2013 10:25 PM
Has anyone successfully used the MIRA part in a design? I've tried following the Atlys MIG tutorial with the recommened equivalent part from the reference manual with no luck, the timing parameters from the datasheet appear to match the core generator timing settings. I output the calibration done signal to the board's LEDs and am getting no resposne so my best guess is that the calibration isn't completing successfully but I'm at a loss of where to go from there for troubleshooting.
11-07-2013 12:47 AM
So I've managed to get it working. It seems there is something wrong with the reset signal in the top file in the project from that Atlys tutorial. Once I get a slightly more useful demo working with my Atlys board I'll post my full code for anyone else who stumbles upon this thread.
05-09-2017 05:02 AM
The problem for anyone else stupid enough to hit the same problem is that the MIG defines DEBUG and the xapp495 output demo has `ifdef DEBUG statement. This causes the video to be non-functional and optimised out. Removing the debug blocks makes everything work.
Can you please share the code with me? I am trying to use MIG with XAPP495 for months now. Thanking in advance.