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DLPLCRC410EVM: missing FPGA config proms + board layout changed

boblee
Prodigy 90 points
Part Number: DLPLCRC410EVM
Other Parts Discussed in Thread: DLPC410

We have in-hand a half dozen recently purchased 'C410 EVM boards.  These boards were delivered without the FPGA config prom footprints populated (U8 and U10) and the board layout has been changed compared to prior board version.  Most obviously, the layout now has two additional pin headers (J19 and J20).  Per advisory notice, it is understood that the DLPR410 prom is obsolete and unavailable, and I assuming that the added headers are to be used as a workaround to substitute the serial flash parts described in the advisory.  All good, if true, I suppose.  Problem is that we have customer delivery commitments for these units and there is no published info available about these boards changes or info on how we can to bring them to life. And, there was no warning or cautionary advice provided upon purchase to indicate that these boards would be unusable out-of-box. I have looked everywhere on ti.com and cannot find the updated design files or any related info.  Am I missing something?  

  • 0
    TI__Expert 3525 points

    Lee, the boards were configued with a direct SPI flash.  They should power up and operate normally.  Did you try to power them up?

    We do need to get an updated PCB design out onto ti.com, but these are still in review.  The boards should function without exactly as previous versions.  Let us know if you find that they do not work.

    Thanks,

    Jason

  • 0 in reply to Jason Thompson
    Prodigy 90 points

    Jason, yes indeed the boards work fine, out-of-box, with the Explorer software. Tech was trying to program the apps side prom with custom code and it fails because the flash memory config differs from our "cookbook" setup procedure document.  Somehow managed to lose the USB setup too, but that is resolvable. I may have some more questions tomorrow but near term issue is resolved.  Thanks!  Sorry for the confusion. 

  • 0 in reply to boblee
    TI__Expert 3525 points

    Good to hear.  Let us know if you issues.

  • 0 in reply to Jason Thompson
    Prodigy 90 points

    Remaining issue is how to program the apps side prom. We have a configuration that requires installation of an encrypted flash image file.  Seems that setting up the encryption scheme is a separate issue from the prom programming process, but we don't have enough info to program the prom.  Will there be an update to the User Guide or an App Note with info on the revised programming process?

  • 0 in reply to boblee
    TI__Expert 3525 points

    Lee, I am going to assign to Michael Ly.  He will post the instructions.

  • 0 in reply to boblee
    TI__Expert 6760 points

    Hi  Lee,

    I am in the process of making a new stop-gap document for this and would like to run through all the steps before releasing to you. I can get back to you by the end of the work day, as I was able to test at least one way to configure the PROM into a working state yesterday. We just want to bang on this a bit more before releasing to make sure the written instructions match what we are doing.

    I have also let my coworker know that the DLPC410 will require a user's guide update to include how to program the PROMs. If it is not in the user guide, it will most likely point to another appropriate document.

    Regards,
    Michael Ly

  • 0 in reply to boblee
    TI__Expert 6760 points

    Hi again Lee,

    Sorry for the delay! Here is what I put together after testing in the lab yesterday. Please let me know if this works for you.programmingInstructions_dlpc410AppsFpgaSpiProm.docx

    Regards,
    Michael Ly

  • 0 in reply to Michael Ly
    Prodigy 90 points

    Michael, Thanks for the info. That process is similar to what was used on those obsolete Xilinx flash parts, and even uses the same Xilinx programming cable as before.  Since the board has some new headers I was somehow expecting it to be a different process and programming interface.  All good!  However, where can I get the described .bit and .mcs files?  I can create appropriate files for our custom applications but would like to be able to restore the boards to their out-of-box configuration when needed.

  • 0 in reply to boblee
    TI__Expert 6760 points

    Lee,

    I do not have an exact date of when we will release these files, but we should have them on TI.com before the end of the year. More details on how to program via a SPI interface will also come, but must be cleaned up before then. Please keep an eye out for the DLPR410 page where we release our firmware!

    Regards,
    Michael Ly