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Downloading ADC samples using ADC12J4000 EVM and TSW14J56 EVM

Boaz Rippin
Prodigy 70 points
Other Parts Discussed in Thread: ADC12J4000EVM, ADC12J4000, DAC38J84

I am using the ADC12J4000EVM together with the TSW14J56EVM. The SW I use is High Speed Data converter Pro 2.6, together with the ADC12J400EVM GUI version 1.3

The TSW has enough memory for 500M samples. I set up the sampling buffer size with the CAPTURE OPTION tab

Getting the samples out of the card takes very long time, significantly much longer than what would be justified by the USB interface. It seems that SW graphics and File system service are the problem. it can take more than 30 minutes to extract one buffer. 

Questions

1. is the an alternative mechanism to read the sample buffer from the TSW14J56EVM? for instance, buy my own application?

2. what is the binary file format?

Boaz

  • 0
    TI__Mastermind 43930 points

    Hi Boaz

    That is the expected transfer time for the TSW14J56 capture platform. There aren't any faster mechanisms to get the data out.

    Regards,

    Jim B

  • 0 in reply to Jim Brinkhurst1
    Prodigy 160 points
    Hi Jim

    Im looking at using exactly the same set-up as discussed above (ADC12J4000EVM together with the TSW14J56EVM) , and capturing the full 512Msamples. This is a process we would repeat many times during our testing so the slow transfer time (>30 mns) to get data out of the card onto a PC is a bit of a show stopper. Has there been any improvement in this area or is this still the expected transfer time?

    Any information greatly appreciated.

    Marc
  • 0 in reply to Marc Lavenant
    TI__Genius 12965 points

    Marc,

    There is a new version of the TSW14J56 coming in early Q2 - it will utilize a much faster USB3.0 interface as well as having a larger memory depth.  The current memory (256Msamples) transfer which takes 30 mins only takes 15-20 seconds.  The memory has been increased as well to 1Gsample and this takes about 1 minutes time.

    If you do not have access to a blue USB3.0 SS port it will still improve the USB 2 interface by an order of magnitude.  We expect the improved USB2 interface to download 256M memory in 40-45 seconds (vs existing 30mins).

    Ken

  • 0 in reply to Ken C
    Prodigy 160 points
    Hi Ken and thanks very much for your prompt reply.

    This sounds very good and we look forward to this new release.

    Just for final clarification -

    The specs I have for the TSW14J56 (doc SLWU086A, dated Nov 2013) state that up to 512Msamples can be captured (you mention 256Msamples?). In any case, it sounds like this will be increased to 1Gsample on the upcoming version.

    We are looking at having one set-up for tx (TSW14J56+DAC) and one for rx (TSW14J56+ADC). I am assuming this increase in memory applies to the transmit side as well, with the ability to load test patterns up to 1Gsamples , with reduced time to load data onto the on-board memory
    I also assume once the pattern data is downloaded onto the board, it is played in a repeat-loop mode?

    Thanks again for your assistance Ken.

    Marc
  • 0 in reply to Marc Lavenant
    TI__Genius 12965 points

    Marc,

    The total memory was 8Gb which would provide a total of 512Ms @ 16bits.  The firmware implements a transceiver function which only uses 1/2 of the memory for TX and RX - this was done to make the firmware development easier to support only 1 firmware for ADC, DAC and transceiver applications.

    The new EVM should have 4x that memory for 2Gs in total, 1Gs each for ADC and DAC.

    The data on the DAC side is looped infinitely.

    Ken.

  • 0 in reply to Ken C
    Prodigy 160 points

    ok, great, and thanks again Ken for this very useful info. We look forward to this new version!

    Marc

  • 0 in reply to Ken C
    Prodigy 160 points
    Hello again Ken

    I have been asked to follow up on this new release for the TSW14J56. Would you possibly have any further information on the actual release date (you mentioned early Q2)? It would of course make sense for us to wait for the new release rather than purchase the current version of the board.

    Any further information would be greatly appreciated.

    Marc L.
    Institute for Telecommunications Research
    University of South Australia
    http://www.itr.unisa.edu.au/
  • 0 in reply to Ken C
    Prodigy 160 points
    Hi again Ken

    a few months down the line now and I am just wondering if there are has been any further info regarding the release date of the new version of the TSW14J56, as you mentioned "TSW14J56 coming in early Q2 - it will utilize a much faster USB3.0 interface as well as having a larger memory depth".

    Any information would be greatly appreciated. Thank you Ken.

    Marc L.
    University of South Australia
  • 0 in reply to Marc Lavenant
    TI__Genius 12965 points

    Hi Marc,

    The good news is that the hardware has been tested and is working for the DAC38J84 and ADC12J4000 and is fully integrated into HSDC Pro.

    The bad news is that we had a slight delay in the fab shop on building the hardware for release and as such we are expecting the TSW14J56revD to arrive this week.  We should be able to have an official release to estore in about 4 weeks.

    Sorry for the delay.

    Ken

  • 0 in reply to Ken C
    Prodigy 160 points

    Hi Ken and thanks again for the info and update.

    We are ready to make a purchase as soon as the new release is available.

    I guess we should safely expect something this month (July)?  Do you have any information on the cost (I assume it wont stay the same as that currently listed on the TI website product page?). I assume this product page is the best place to check and will be updated when new release available?

    Thanks Ken.

    Kind Regards

    Marc L.

    University of South Australia

  • 0 in reply to Marc Lavenant
    TI__Mastermind 43930 points

    Hi Marc

    I'll check with the team launching the Rev D board and let you know about the latest schedule and pricing plans.

    Best regards

    Jim B 

  • 0 in reply to Jim Brinkhurst1
    Prodigy 160 points

    Hi Jim

    Just a quick follow up to see if you did get a little more info on schedule etc...Any info greatly appreciated.

    Kind Regards

    Marc L.

    Unisa

  • 0 in reply to Marc Lavenant
    TI__Guru* 91947 points

    Marc,

    The Rev D TSW14J56EVM's should be available this week.

    Regards,

    Jim S.

  • 0 in reply to jim s
    Prodigy 160 points

    That's great news, thanks Jim.

    Marc L.