• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 33 subscribers
  • Views 260 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.

DP83869HM: Configuring as sgmii to copper forced 100M full duplex.

tharun choudari
Prodigy 10 points
Part Number: DP83869HM

HI,

In hardware dp83869hm is strapped as sgmii to copper with 10/100/1000 auto-neg enable and its working. But I want sgmii to copper forced 100M,full duplex.

Below are the registers and their respective values I used.

1,wrote 0x0046 to reg 0x01DF

2,wrote 0x2100 to reg 0x0000

3,wrote 0x5000 to reg 0x0010

4,wrote 0x1000 to reg 0x0009

5,wrote 0x2100 to reg 0x0C00

Didn't observed any packets in Wireshark.

Tried reading 0x1 reg [BMSR] and its observed value is = 0x7949.

Please let me know where mistake is.

  • +1
    TI__Mastermind 26882 points

    Hi Tharun,

    We do not recommend disabling auto-negotiation to force a speed. Rather, leave auto-negotiation on and remove the advertisements for the speeds other than the one you want. You can do this in register 0x4. Please try this and let me know if you have success.

    Thanks,

    David