• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 381 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TM4C1294NCPDT: Does a custom board need enabling a internal PHY?

Prachi Patil
Expert 1840 points
Part Number: TM4C1294NCPDT

My custom board is based on TM4C1294NCPDT design. Now I was reading this document from TI     spmt306-TM4C129EKCPDT Microcontroller-Technical Brief.pdf

it is mentioned on page- 82, "The internal Ethernet PHY should not be enabled when RBIAS is not connected."  So the internal Ethernet PHY for a custom board needs to be enabled when RBIAS is connected...I would like to know how to enable the internal PHY for custom board and what other changes are needed for custom board to work for Ethernet  applications?

Thanks.

  • 0
    TI__Guru**** 183026 points
    Hi,
    If you have used the TivaWare ethernet examples then the internal PHY is enabled. Please try these examples. The internal PHY is part of the MCU.
  • 0 in reply to Charles Tsai
    Mastermind 8695 points

    In the RTOS examples, does BIOS_start() configure the Ethernet PHY?

    All the RTOS example do something like:

    Board_initGeneral();
Board_initGPIO();
Board_initEMAC();

BIOS_start();

    The 3 init functions don't seems to be setting register values or making TivaWare function calls for Ethernet PHY.