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TSW1400EVM: How to get the LVDS signal from ADC EVM board through TSW 1400 with physical port (GPIO or HSMC?)

Part Number: TSW1400EVM

We bought TSW 1400 with ADC3422EVM board and works normally,

and we would like to know how to direct the LVDS signal from ADC to DAC connector(J4)?

TSW140x user manual:

http://www.ti.com/lit/ug/slwu079d/slwu079d.pdf#page=3

Is there has any function or physical switch to do that?

the goal we expect is to get the LVDS from ADC EVM board via GPIO port (maybe a HSMC to GPIO extension board or something?), but it seems we have to get he signal through the TSW1400?

or is there has any other way we could do this? 

thank you 

  • Hi user
    The TSW1400 firmware packages don't currently support transceiver mode operation (receiving data from an ADC EVM while transmitting data to a DAC EVM.
    Is there a specific DAC EVM you are planning to send the data to?
    Are you planning to purchase additional TSW1400EVMs in the future? If so how many and over what timeframe?
    We will need this information to try to justify the development of the new firmware that would be needed.
    Best regards,
    Jim B
  • Hi Jim

    thanks for reply,

    Is there a specific DAC EVM you are planning to send the data to?

    We need tsw1400evm to send the data to it's J4 port or CMOS port, we've a digital signal receiver and would like to use it capture the LVDS signal from ADC3422EVM.

    we found a module may could do this, but we're not sure.

    Terasic Inc. P0033

    https://www.digikey.tw/product-detail/zh/terasic-inc/P0024/P0024-ND/4215574

    or Terasic Inc. P0024

    https://www.digikey.tw/product-detail/zh/terasic-inc/P0024/P0024-ND/4215574

    for use that module, TSW1400EVM has to direct the LVDS signal to it's J4 (to DAC) port without DAC module? could it do that? or it already did this, and we don't have to do anything?

    Is it possible to use this P0033/P0024 module to get the LVDS signal from ADC3422evm via TSW1400evm ?

    it's better to get the signal from ADC3422evm board with some module transfer HSMC to GPIO or something,

    is there has any module could just transfer LVDS signal from HSMC to GPIO (or other usual port like CMOS ?) for ADC3422EVM?, if yes, we'll take it into consideration.

    Are you planning to purchase additional TSW1400EVMs in the future? If so how many and over what timeframe?

    we for now have no plan to purchase additional TSW1400EVM modules, what we need is to get the LVDS signal from ADC3422evm, but it seems like this board has to connected to TSW1400EVM for its HSMC port(only have two) only?

    do you have any suggestions for our application?

    thank you

    BR

    Chun-I

  • Hi Chun-I
    As I said earlier, the existing firmware for the TSW1400EVM does not pass the ADC data through to any other connectors. The data just goes into the FPGA and is captured into the memory buffer.
    Do you need continuous streaming data from the ADC outputs to the J4 DAC connector or CMOS port?
    What ADC sample rate do you need?
    What signal formats can your digital signal receiver accept?
    Can you share the details of the data input connector on the signal receiver?
    Best regards,
    Jim B
  • Hi Jim

    we would like to use ADC3422EVM. all we need is to capture the LVDS signal. 

    the data input connector is  SHC68-H1X38,

    show in following picture,

    according what you said, I think we cannot get the LVDS signal from TSW1400EVM,

    so is there has an extension board could transfer HSMC to GPIO for ADC3422EVM?

    could we use the board we found in last post to do this?

    or there already has a physical pin we could connect on the board?

    thank you

    BR

    Chun-I

  • Hi Chun-I
    Can you confirm that the digital signal receiver you have is compatible with the LVDS data formats shown in the ADC3422 datasheet in Figure 130? The FCLK (frame clock), DCLK (data or bit clock) and DxnP/M (data) LVDS data signals must be compatible with the receiver or an adapter will not be
    The data receiver must be compatible with these signals for an adapter to be useful.
    Do you have a schematic, connector pinout or other documentation showing what the signal connector on the digital signal receiver supports?
    Best regards,
    Jim B
  • Hi Jim

    we are using NI 6570, this device can generate/capture digital signal with customize setting, and we believe this can follow the LVDS formats in ADC3422 datasheet,

    Use it to communicate with ADC3422 is what we want to do,

    Please check the following link for more detail if you need.

    PXIe-6570

    http://www.ni.com/pdf/manuals/375726e.pdf

    and we're using this Digital Cable for now,

    SHC68-H1X38

    http://www.ni.com/zh-tw/support/model.shc68-h1x38-digital-cable.html

    the picture of cable is what you see in the last reply I post before

    could you help us to find some adapter or something that can connect both card?

    thank you

    BR

    Chun-I

  • Hi Chun-I
    What you need is a breakout board to adapt the ADC3422EVM data connector to a 0.1" header so you can connect the flying lead cable that you have.
    I have looked for such a breakout board but have not found one within the TI tools, or at outside vendors.
    What is the reason you need to connect this ADC to that specific PXI pattern module?
    Do you need to capture a certain size of ADC data record?
    Do you need to be able to automate the data captures?
    If you can provide more information there may be another way we can help achieve what you need.
    Best regards,
    Jim B
  • Chun-I,

    The source code for the TSW1400EVM is available under the product folder on the TI website. Can you modify this code to send the captured data from the ADC connector and route it to the DAC connector? I do not think this would take much effort to do.

    Regards,

    Jim