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TSW1400EVM: I am looking for a pattern generator to mimic our chip LVDS output.

Manjula Ramaswami
Prodigy 30 points
Part Number: TSW1400EVM


Looks like TSW1400EVM does something similar for TI's high speed DACs. The questions I had were:

1) do I need LabView to be able to use this EVM?

2) if the answer to (1) is "NO", what are the output voltage specs: common mode, differential swing.

    [ Ideally I would like to be able to send out SubLVDS, LVDS and SLVS signals]

Would appreciate any inputs.

Regards,

Manjula

  • 0
    TI__Guru* 91947 points

    Manjula,

    This board can output both LVDS and CMOS  level data. You can use the provided GUI to operate the board as is. This GUI has a built in pattern generator tool to allow you to create your own patterns. You can also import external test pattern files. Go the TSW1400EVM product folder on the TI website to download more information regarding this product.

    Regards,

    Jim 

  • 0 in reply to jim s
    Prodigy 30 points

    Jim,

    Thanks for your reply.

    I downloaded the software. Had a few more questions:

    What do I do about the "ini" files - since I am driving a non-TI chip?

    How would I create one, how would I make the software use my custom configuration?

    Basically what I need to do is drive 4 LVDS channels on our custom chip, with our custom pattern.

    Would it be possible to provide a hacked "ini" file for my purpose?

    And provide some instructions on how to point to this? [ I am assuming I create another DAC directory and select this one.]

    Would be easier than me trying to get it to work by trial and error. Would appreciate it.

    Also, I would like to be able to sample 4 LVDS channels from a non-TI chip using the ADC port.

    Would it be possible provide a hacked "ini" file for this purpose?

    Regards

    Manjula

  • 0 in reply to Manjula Ramaswami
    TI__Guru* 91947 points

    Manjula,

    Do to the nature of what you are testing, the support I can provide will be very minimal. I have attached a few documents that hopefully will help.

    Regards,

    Jim

    3542.TSW1400_doc_adc.pdfTSW14J56revD ADC INI File Guide.doc

  • 0 in reply to jim s
    Prodigy 30 points
    Re: "Due to the nature of what you are testing, the support I can provide will be very minimal. I have attached a few documents that hopefully will help" - fair enough.

    However, since you are familiar with the board, could you answer a few general questions -

    1. Do I have to provide an external reference clock in order to be able to use the pattern generator?
    2. Do I have to select a DAC from the GUI, in order to be able to use the pattern generator card?
    i.e., does whether or not I get an output depend on whether it recognizes the device attached to the outputs?
    i.e., are the INI files only to configure the DAC/ADC EVMs to take the right inputs?
    3. What I had in mind was a simple import of a pattern from a csv file and hooking up the right channels per my needs
    without having to worry about any other configuration files - is that feasible?

    Would appreciate you inputs to each of the above questions, even if it is a simple yes or no.
    This would help determine if this board will work for me. Hopefully after this I will not have any more questions.

    Regards,
    Manjula
  • 0 in reply to Manjula Ramaswami
    TI__Guru* 91947 points

    Manjula,


     1. Do I have to provide an external reference clock in order to be able to use the pattern generator? Yes


    2. Do I have to select a DAC from the GUI, in order to be able to use the pattern generator card? Must select a DAC.


    i.e., does whether or not I get an output depend on whether it recognizes the device attached to the outputs? No. Just needs a valid clock.


    i.e., are the INI files only to configure the DAC/ADC EVMs to take the right inputs? There are used to configure the output patterns for DAC's and the input data from the ADC's.


    3. What I had in mind was a simple import of a pattern from a csv file and hooking up the right channels per my needs
    without having to worry about any other configuration files - is that feasible? yes

    Regards,

    Jim