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TSW1400EVM: Parsing ADC samples TSW1400EWM and ads4249

Artem Sherstobitov
Prodigy 130 points
Part Number: TSW1400EVM
Other Parts Discussed in Thread: ADS4249

Hi, I'm planning capture ADC samples from TSW1400EVM with ads4249.
My task is to capture "packets" of ADC samples and send them to PC.
Every packet consists of 6000 samples length, and has 250 - 300 MHz sample rate.
Distance between packets is 100 us ( packet rate is 10 KHz)
Can I use HSDC Pro GUI to do this, or I have to use another software, or write it myself?

Best reagrds, Artem

  • 0
    TI__Genius 12965 points
    Hi Artem,

    The TSW1400 is capable of handling the memory size and sampling speed, but it will not be able to pass the data to the PC within 100us. You will need to design a custom solution for this.

    Ken.
  • 0 in reply to Ken C
    Prodigy 130 points
    Thank you, Ken.
    I have understend, that I can't send ADC data packets to PC on real time.
    I will use on-chip memory, or DDR memory to capture samples, and then transmit it to PC.
    How mach ADC's 6000-samples length packets I can write, and can I do this with HSDC Pro GUI?
    Best regards, Artem
  • 0 in reply to Artem Sherstobitov
    Prodigy 130 points
    Is FFT implemented on FPGA, or HSDC Pro GUI calculates FFT at computer? If it has FPGA pipelined implementetion, can I calculate spectras from each "packet" with 6000 ( or 8192 ) samples, and then add 4000 spectral powers, to get everege spectra. And finaly send everege spectra to PC?
    Best regards, Artem
  • 0 in reply to Artem Sherstobitov
    TI__Genius 12965 points
    Artem,

    The firmware is currently only designed to save the data to memory, and then transfer this to the PC using the USB interface. FFT is performed in HSDC Pro and displayed for the user to analyze. Unfortunately the FPGA firmware as it is will not be able to do what you need. For what you are describing you will need to write your own custom firmware.


    Ken.