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CDCE937 USB Programmer

Reza Abbaspour
Prodigy 20 points
Other Parts Discussed in Thread: CDCE937

Hi,

I am trying to program CDCE937 internal EEPROM via FT2232H USB controller chip. Although I exactly followed the given schematic of CDCE(L)9xx Performance Evaluation Module in its user guide document (SCAU022A) but I cannot read or write on CDCE937 registers by Clock Pro (which is based on Labview). Thus I guess there might be some special settings which should be applied on FT2232H chip in order to make it recognizable by Clock Pro so please tell me what key point must be taken into account to mitigate the problem.

Thanks

Reza Abbaspour

  • 0
    TI__Expert 5725 points

    Hi Reza,

    The FT2232 is not preprogrammed to specific settings. Did the TI Clock pro that you have installed in your PC work with  the performance EVM board?

    That will help us to understand what is happening on your setup. What operating system are you using? What version of TI clock pro do you have installed? Please use the latest one (that is not labView based, and is much smaller in size): http://www.ti.com/litv/zip/scac119b

     

    Best regards,

    Mariajose

     

  • 0 in reply to mapefer3
    Prodigy 20 points

    Hi Mariajose,

    I have already tried both versions of Clock Pro but unfortunately I couldn't get a proper response from my hardware which had default settings on FT2232, then I found a forum discussion where someone discussed on a similar problem with a programming hardware based on FT2232 for ADS528x (http://e2e.ti.com/support/data_converters/high_speed_data_converters/f/68/p/84213/290372.aspx#290372) thus I applied the same PID and VID to my hardware and I got some results which means that the software could detect my hardware but I couldn't modify the internal registers of CDCE937.

    My computer OS is Windows XP.

     

    Best regards

    Reza

     

  • 0 in reply to Reza Abbaspour
    TI__Expert 5725 points

    Hi Reza,

     

    Is the performance EVM working with your current software?

     

    The PID and VID of the FTDI chip on one of our performance EVM board was FTDIBUS\COMPORT&VID_0403&PID_6010. This information was read from the device manager/properties the VID is the same in all FTDI but the PID might be not the different for all FTDI chips and it is also changeable. The driver for the FTDI chip would recognize the VID and some PID by default.

     

    When the board is connected to the PC via USB, the PC should detect the HW and ask you for drivers, the .inf file for the USB and the PORT contain the VID and the PID, during the installation of the drivers those numbers would be used by the PC. The .inf files that appear under C:\WINDOWS\system32 are FTDIBUS.INF and FTDIPORT.INF after a proper installation of the TI clock pro SW (release 6 december 2010), you can open those and see the PID and VID information.

     

    The files that you pointed to from the ADC group contain a different PID, that might have been the problem.

     

    Best regards,
    Mariajose