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Original question:

TM4C1294NCPDT: TM4C1294NCPDT ethernet wave setting

TM4C1294NCPDT: TM4C1294 Ethernet PHY Register MR26(EPHY10BTSC) BIT7

GR
Genius 3186 points

Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: TLK110

Hi

I tried EPHY10BTSC BIT7(NLPDIS) write 1.

But the bit can not setted 1 in not Linked status.

However, After, In Linked status, The BIT automatically seted 1.

Is this bit Really RW (Can Read and Write) registor?

I think this bit is NLP(Normal Link Pulse) Status Registor.

So this bit seem RO Registor.

thanks,

GR

  • +1
    TI__Guru**** 191886 points

    Hi GR-san,

      I think it is a RW. The integrated PHY in TM4C129 MCU is the same as the standalone PHY TLK110. Please see attached datasheet. https://www.ti.com/lit/gpn/tlk110 for additional information about link pulse generation at the wire level. I myself is not so familiar with the internal working at the PHY level. 

  • 0 in reply to Charles Tsai
    Genius 3186 points

    Hi Tsai-san,

    Thank you for your information.

    I would appreciate any information you have,

    Is there any  terms and conditions to set the Bit (EPHY10BTSC BIT7)  1?

    I can not write the bit 1 , in  Auto-Negotiation is disenable, 10Mbps Half-Duplex setting. (Not Linked condition)

    My expectation of terms that the Bit (EPHY10BTSC BIT7) can write 1 is the bit can use Only FLP(in Auto-Negotiation) enable  condition.

    thanks,

    GR

  • 0 in reply to GR
    Genius 3186 points

    Hi Tsai-san

    Thank you to your support.

    I am sorry about on this topic.

    The issue of that i can not write was solved.

    the probrem was my Register value output code miss.

    thanks,

    GR