• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 29 subscribers
  • Views 472 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.

TM4C129NCZAD

a.v
Expert 1255 points

Hi,

The MAC in TM4C129NCZAD MCU supports IEEE 1588 PTP. Does the integrated PHY support this protocol or should a external PHY  be connected so as to  support IEEE 1588  PTP?

Thanks

  • 0
    TI__Guru**** 196306 points
    Hi Ayswaria,

    TM4C129NCZAD has both EMAC and PHY built-in the device. The IEEE1588 can be implemented in either EMAC or PHY. It is not necessary to have it in both.

    IEEE 1588 standard defines a protocol to synchronize distributed clocks on a network. The protocol uses 4 meesages to measure the communication delay of the forward and backward paths: Sync, Followup, DelayReq, and DelayResp. These event messages must be time-stamped (recording the local time) when they leave and arrive at a device. The time-stamp operation can be executed by the IEEE1588 related HW in EMAC or PHY.

    Regards,
    QJ