[casper] QDR Help / Timing Diagram

2017-07-05 Thread Schoenwald, Adam J. (GSFC-5640)
Hi All, I've abandoned my attempt to use the DRAM for now and moved on to QDR. I'm somewhat confused by the wiki at https://casper.berkeley.edu/wiki/Qdr . The "issuing commands section" says that one type of command cannot be issued in two consecutive cycles. The "bursting" section says that dat

Re: [casper] QDR Help / Timing Diagram

2017-07-05 Thread Jack Hickish
On Wed, Jul 5, 2017, 6:56 AM Schoenwald, Adam J. (GSFC-5640) < adam.schoenw...@nasa.gov> wrote: > Hi All, > > I’ve abandoned my attempt to use the DRAM for now and moved on to QDR. > > I’m somewhat confused by the wiki at https://casper.berkeley.edu/wiki/Qdr > . > > > > The “issuing commands sect

Re: [casper] QDR Help / Timing Diagram

2017-07-05 Thread Jason Manley
There's also a testbench for our ROACH2 VACC that's currently in service on MeerKAT, which may help you: https://github.com/ska-sa/cbf_fpga_testbenches/blob/master/test_qdr_vacc5.slx Note that there are calibration problems with QDR on ROACH2, so you'll likely encounter bit errors. If this matt

RE: [casper] QDR Help / Timing Diagram

2017-07-05 Thread Schoenwald, Adam J. (GSFC-5640)
Jack Hickish Cc: Schoenwald, Adam J. (GSFC-5640) ; Casper Lists Subject: Re: [casper] QDR Help / Timing Diagram There's also a testbench for our ROACH2 VACC that's currently in service on MeerKAT, which may help you: https://github.com/ska-sa/cbf_fpga_testbenches/blob/master/test

Re: [casper] QDR Help / Timing Diagram

2017-07-05 Thread Jack Hickish
ical Engineer > Office: 301.286.4175 | Cell & Text: 631-241-0003 > > > > -Original Message- > From: Jason Manley [mailto:jman...@ska.ac.za] > Sent: Wednesday, July 5, 2017 10:55 AM > To: Jack Hickish > Cc: Schoenwald, Adam J. (G