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LAUNCHXL-F28377S: Code format

Jingtai
Genius 4575 points
Part Number: LAUNCHXL-F28377S
Other Parts Discussed in Thread: ADS5560, DAC7760

In ADC datasheet:

The data is output to Launchpad and I don't know which format is for Launchpad.

  • 0
    TI__Expert 7885 points
    Hello Jingtai,

    I am not quite sure what you are asking for here. What is the communications protocol which will be used to send data to the launchpad from the ADC?

    Best Regards,
    Adam Dunhoft
  • 0
    TI__Guru 62975 points

    Jingtai,

    That is a register that is software-configurable through the serial interface.  Its values are determined by your application software.

    The DFS pin can also select the format.

    -Tommy

  • 0 in reply to tlee
    Genius 4575 points
    Aright. I'll consider it in the application software.
    ADC and DAC datasheets use different vocabularies and staffs don't know their difference. In EVMs Xilinx ICs are integrated rather than TI's MCUs therefore there are no references integrating TI's ADCs, MCUs and DACs. As if different sections in TI don't communicate each other.
  • 0 in reply to Jingtai
    TI__Guru 62975 points
    Jingtai,

    I would like to understand your comments and situation better.

    Are you connecting an ADS5560 EVM to the LAUNCHXL-F28377S?

    -Tommy
  • 0 in reply to tlee
    Genius 4575 points
    No, ADS5560 EVM connects to TSW1200EVM for LVDS format and FPGA integration. It is not my solution thus I'll connect ADS5560 to LAUNCHXL-F28377S as ADC and output signals will be connected to DAC7760. Two SPIs and several GPIOs will be used.
  • 0 in reply to Jingtai
    TI__Guru 62975 points
    Jingtai,

    I understand now. You are correct that there are differences in terminology and style between TI product lines.

    This is caused by various reasons such as business acquisitions where products and employees from an entirely separate company are brought into TI; or a product group within TI may adapt their collateral to better serve a specific market.

    This is a known issue and there are ongoing efforts to better unify the product lines.

    Out of curiosity, are the embedded 16b ADCs and 12b Buffered DACs on F28377S not able to meet your needs?

    -Tommy
  • 0 in reply to tlee
    Genius 4575 points

    Originally I was going to use embedded ADCs and DACs but I realized their specifications are not for higher frequency, for example, the SNR is tested at 100 KHz, our input signal is 10 MHz; the output is unipolar but the required outputs are both 0-10V and +/-10V. That is the reason we have to integrate stand alone ADCs and DACs although it increases a lot work. 

  • 0 in reply to Jingtai
    TI__Guru 62975 points
    Jingtai,

    That makes sense. Do you have access to a local TI sales office? They may be able to help you with the system integration of the various components.

    -Tommy
  • 0 in reply to tlee
    Genius 4575 points

    Alright. Thank you.