• State TI Thinks Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 34 subscribers
  • Views 1147 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.

SN65HVDA100-Q1: SN65HVDA100-Q1 LIN specification revision compatibility

Ritesh Patel
Intellectual 560 points
Part Number: SN65HVDA100-Q1

Hi, 

I have a requirement of LIN 2.0 PHY in one of my project.  I found TPIC1021AQDRQ1 from TI but that is NRND.

There is another LIN PHY SN65HVDA100QDRQ1 which supports LIN 2.1 specification. 

Is LIN 2.1 PHY backward compatible to LIN 2.0 PHY?

Thanks,

Ritesh.

  • 0
    TI__Guru 74252 points

    Ritesh,

    Yes, but under certain circumstances. A LIN 2.1 master node may handle a LIN 2.0 slave node if the master node also contains all functionality of a LIN 2.0 master node, specifically some of the obsolete functions from LIN 2.0. A LIN 2.1 slave node can be used in a cluster with a LIN 2.0 master node if the LIN 2.1 slave node is pre-configured, meaning the LIN 2.1 slave node has a valid configuration after reset.

    How do you plan to use the LIN 2.1 part and how are the LIN 2.0 parts being used currently?

    Regards,

  • 0 in reply to Eric Hackett
    Intellectual 560 points

    Thanks for quick response.

     

    Ok. So will  SN65HVDA100-Q1, as a LIN 2.1 master node, handle LIN 2.0 slave node? OR Does  SN65HVDA100-Q1, as a LIN master node, have all the functionality of LIN 2.0 master node to handle LIN 2.0 slave node?

     

    Thanks 

     

  • 0 in reply to Ritesh Patel
    Intellectual 560 points

    HI..

    Awaiting for the response on above query.

  • 0 in reply to Ritesh Patel
    TI__Guru 74252 points

    Ritesh,

    Apologies for the delay, there isn't a lot of documentation regarding whether or not this part is completely backwards compatible. For LIN 2.1 to work as a master for a LIN 2.0, like I said before, the 2.1 device has to also have the obsolete LIN 2.0 functionality. These obsolete functions are: message identifiers for slave nodes and assigning frame ID configuration. In LIN 2.1 these functions were removed. Because this device is just a physical interface, these two functions should be irrelevant to the device, and should only be relevant to the message protocol developed. 

    In short, yes, this device can work as a master with a LIN 2.0 slave.

    Regards,