• State Resolved
  • Replies 3 replies
  • Subscribers 34 subscribers
  • Views 73 views
  • Users 0 members are here
Support feedback
Options
Options
Related

DP83869HM: Link Failure Detect

Anway Das
Prodigy 30 points

Part Number: DP83869HM

Hi,

In case of a link drop , is that indicated by any register polling or is monitoring the LEDs only way to detect a link drop?

Thanks!

 

image.png

  • +1
    TI__Mastermind 37385 points

    Hi Anway,

    Link down can be detected through the LED pin, polling, or through the Link status interrupt (0x13[10]). If this interrupt is enabled, and the INT_N/PWDN pin is configured for interrupts, the INT_N pin will pull low to indicate an interrupt has occurred when the link status changes.

    Best,

    Shane 

  • 0 in reply to Shane Hauser
    Prodigy 30 points

    Hi Shane,

    Thanks for the reply , so just to be clear , the link status interrupt flag needs to be processed over the Serial Management Interface to detect a link loss . Is that correct ? I do not plan to use the PWDN pin or the LED pin to detect a link loss.

    Thanks,

    Anway

  • +1 in reply to Anway Das
    TI__Mastermind 37385 points

    Hi Anway,

    If you do not plan to use the PWDN pin then yes this interrupt flag would need to be processed over the SMI. This would follow a similar polling scheme to the link status register.

    Best,

    Shane