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DP83822H: TIDM-DELFINO-ETHERCAT ref schematic (PFBIN1/2 and PFBOUT)

Nam, Dino
Expert 5775 points
Part Number: DP83822H
Other Parts Discussed in Thread: TIDM-DELFINO-ETHERCAT, TLK105

Dear team, 

On the ref schematic(tidrle9a) of TIDM-DELFINO-ETHERCAT , we can see the PFB pin function(PIN13,15,24) as like below schematic. But I can't find about PFB pin function at datasheet of DP83822. PIN13,15 are NC port and PIN24 is LED-1 at datasheet.

Please let me know function of PFBIN1/2,PFBOUT. 

Thank you. 

  • 0
    TI__Mastermind 23675 points

    Hi Dino,

    The DP83822 is a drop-in replacement for the TLK105/6 devices. 

    There is no PFB pin for the DP83822. I believe the SEM team just replaced the label on the schematic with the DP83822 but did not change the pin name for PFB.

    Those two pins on the 822 are NCs and you can either leave float or have the decoupling caps remain from the TLK105/6 implementation.

    Also, by default, LED_1 is not operational. You can enable LED_1 through either bootstrap or register configuration.