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Link status interrupt in flexible port mapping

Hak-Jin Jeong
Intellectual 350 points

Other Parts Discussed in Thread: DP83849I

Hello, I am using DP83849I with flexible port mapping.

When I use PORT B ethernet via MAC A (Instead of MAC B),

Can I use link status interrupt from PWRDOWN_INT_A pin, when PORT B ethernet link status changes?

Best Regards

Hak-Jin Jeong

  • 0
    TI__Mastermind 31600 points

    The interrupt pin for each port is specific to that port.  A change in the port B link status cannot be indicated via the port A interrupt pin. 

    How will the interrupts be connected in your application?  Will one or both be connected to the MAC? 

    What is the overall configuration for this application?  Could you share a block diagram or a schematic? 

    Patrick

  • 0 in reply to Patrick OFarrell
    Intellectual 350 points

    Thank you for your answer.

    I have only one MAC in the system.

    I didn't use PORT B interrupt pin.(That's my design fault)

    I will connect this PORT B interrupt also to system interrupt input pin.

    (Wired-OR: PORT A and PORT B interrupt pin together to one system interrupt pin)

    Will my approach be correct?

    Best Regards

    Hak-Jin Jeong