• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 32 subscribers
  • Views 142 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.

DP83TG720S-Q1: Remote wakeup by using Send-T

Ahmed Hossam
Prodigy 30 points
Part Number: DP83TG720S-Q1

Hi all,

According to datasheet, it is mentioned that the link partner should set some registers:

reg[0x0405], reg[0x0509] and reg[0x0576]

1- According to the register map section, reg[0x0405] is used to control the DAC current of LD and hence the swing, is that correct?

2- Registers [0x0509] and [0x0576] are not mentioned anywhere else in datasheet, should i access them?

3- What does Registers [0x0509] and [0x0576] do actually?

  • +1
    TI__Mastermind 19150 points

    Hi Ahmed,

    Register 0x405 is used to change the swing of the output. In order to have a reliable wake-up across all cable lengths, we increase the swing of the SEND_T temporarily.

    Registers 0x0509 and 0x0576 are internal state machine registers to bypass SEND_S and transmit SEND_T. Since these are internal registers, the description is hidden from datasheet.

    --
    Regards,
    Gokul.