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

Prachi Patil

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.

over 8 years ago

0 Charles Tsai over 8 years ago

TI__Guru**** 191906 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 Peter Borenstein over 8 years ago 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.

Arm-based microcontrollers

Arm-based microcontrollers forum

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