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ADS42JB49EVM: ADC and KC705 interfacing

Yogitha Rajasekhar
Intellectual 290 points
Part Number: ADS42JB49EVM
Other Parts Discussed in Thread: ADS42JB49

Hi,

I have setup ADS42JB49 , TSW14J10  and KC705 system by following TSW14J10 FMC-USB Interposer Card user guide.

 Connected ADS42JB49 and KC705 using interposer card.

Set jumper settings on TSW14J10EVM to route JTAG signals to FMC (JP2 , JP5 2-3)

Configured ADC using ADS42JB49_EVM_LMF421_250M.cfg file (available along with ADS42JBxx EVM GUI installation)

Through HSDC GUI I have downloaded the available firmware for KC705 (TSW14J10_KC705.svf).

But I could see that FPGA is not being configured and none of the LED glows as mentioned in the user guide. Am I missing any steps in the setup process. Any help on this will be appreciated.

- Yogitha

  • 0
    TI__Mastermind 20541 points
    Hi Yogitha,

    We are looking at your issue and get back to you soon.

    Regards,
    Neeraj
  • 0 in reply to Neeraj Gill
    TI__Guru* 91947 points

    TSW14J10_ADS42JB49.pptxYogitha,

    Do you have the ribbon cable connected between the TSW14J10 and the KC705, as shown in the attached picture? This is required to download the source code to the FPGA.

    Regards,

    Jim

  • 0 in reply to jim s
    Intellectual 290 points

    Hi Jim,

    I did not connect the ribbon cable. The below lines are from TSW14J10 EVM user guide 

    If the FPGA development platform has the JTAG signals routed on the FMC connector, jumpers JP2-5 can be set (shunt pins 2-3) to route these signals to the FMC connector instead of the JTAG connector.

    I understand this as either ribbon cable or  jumper settings to route JTAG signals to FMC is required for the FPGA programming. Do you mean we can program FPGA only using ribbon cable. Then what do we achieve by shunting JP2 and JP5.

    I will connect the JTAG cable and update you

    -Yogitha

  • 0 in reply to Yogitha Rajasekhar
    TI__Guru* 91947 points

    Yogitha,

    By default, we prefer customers to use the ribbon cable and set JP2-JP5 shunts to pins 1-2. For some reason, there is an issue with the KC705 that does not allow the TSW14J10 to use the FMC connections but I cannot remember why.

    Regards,

    Jim