• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 277 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS8588H: BUSY SIGNAL NOT GOING HIGH IN SERIAL AS WELL AS PARALLEL MODE INTERFACE CONNECTED TO THE FPGA

Kabilan K1
Prodigy 20 points
Part Number: ADS8588H

I am giving the conva and convb signal as per the timing requirement in the datasheet ,even though the busy signal is not going high. 

  • 0
    TI__Mastermind 18427 points

    Kabilan,

    1.  A scope or logic analyzer picture would be very helpful for debug here.

    2. Are you using serial or parallel communications?

    3.  Are you using the method described in figure 67 or 68?

    4. FYI.  The EVM can be used as a reference design. Do you have an EVM?

    Looking forward to the additional information.  Good luck with the debug.

  • 0 in reply to Art Kay
    Prodigy 20 points

    Attached the Screeshot of the analyser.

    using parallel mode to read data.

    using figure 68.

    don't have an EVM.

    thanks you

    K.Kabilan.

  • 0 in reply to Kabilan K1
    TI__Mastermind 18427 points

    Kabilan, 

    Can you help me to understand the meaning of the different signals?  If the signal doesn't pertain to the ADC just let me know that.  By looking at the screen shot, I wonder if any of the ADC digital outputs are responding to the digital inputs.  I notice that CHANNEL1, BUSY, and FRSTDATA are all at a static logic level.  If no digital output is changing, I think we better check the wiring of the device.  Check each supply, confirm grounds, check the reference . 

    Also, how many prototypes have you built?  Perhaps the device was damaged during debug or assembly.  The bottom line is that you will normally see some change in the digital outputs if you are wired correctly and the part has not been damaged.

    I hope this helps.  Best regards,