• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 2 answers
  • Subscribers 46 subscribers
  • Views 592 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

WEBENCH® Tools/LDC1614: MUX-CONFIG

user5308536
Prodigy 30 points
Part Number: LDC1614

Tool/software: WEBENCH® Design Tools

Can you tell me how to use Register list and MUX-CONFIG in TI's GUI?

  • 0
    TI__Genius 17440 points

    Hi,

    This post is listed under WEBENCH Tools, but I believe you are asking about the Sensing Solutions EVM GUI for the LDC1614EVM, is this correct? If this is the case, navigating to the Registers tab will allow you to change the values of all configurable registers for the LDC1614. You can change a register value by double clicking on the corresponding cell in the Current Value column and entering a new value in hex. You can also double click on an individual bit to toggle it. Note that many of these registers can also be modified in the Configuration tab.

    You can find the different options for MUX_CONFIG on page 30 of the LDC1614 datasheet. 

    Regards,

  • 0
    Prodigy 30 points
    Hello, can you give me a detailed solution to the MUX problem? It is a time division multiplexing. Thank!
  • 0 in reply to user5308536
    TI__Genius 17440 points

    Hi,

    Can you provide more detail about the problem you are having with the MUX_CONFIG register?

    Regards,

  • 0 in reply to Kristin Jones93
    Prodigy 30 points

    Dear Kristin Jones93:

           I am a student from China. I bought 4 LDC1614EVM. Now I want to ask you a question: can LDC1614EVM realize the timing and break of each coil internally? Time division multiplexing is similar to my idea.And there's jet lag on our connection. Do you have a personal email address?
           Time-division multiplexing (TDM) is a digital (or in rare cases, analog) technology which uses time, instead of space or frequency, to separate the different data streams. TDM involves sequencing groups of a few bits or bytes from each individual input stream, one after the other, and in such a way that they can be associated with the appropriate receiver. If done sufficiently quickly, the receiving devices will not detect that some of the circuit time was used to serve another logical communication path.

          

  • 0 in reply to user5308536
    TI__Genius 17440 points

    Hi,

    We prefer that all questions that don't include proprietary information remain on E2E forums so that they can help other users who may have the same questions. For questions that involve proprietary information we use E2E private messages.

    The LDC1614 measures shifts in inductance by measuring the resonant frequency of the coil. It sequentially measures the frequency of each channel and stores these values in the DATAx_MSB and DATAx_LSB registers. The time each channel is given to measure its resonant frequency is based on the RCOUNT setting. In this sense, the LDC1614 is able to determine which data is associated with each channel and when to start and stop a conversion for channel x. However, the user can only control the duration of the conversions and which channels are active, not the order in which they are measured. The frequency data can also only be accessed via I2C reads to the specific DATAx registers. I don't believe this device (or any of our LDC devices) would be suitable for time-division multiplexing, because there is no way to interleave bits from multiple data registers. 

    Regards,