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DP83826E: How to enable the interrupt pin in Basic mode

Michael Fowler
Prodigy 20 points
Part Number: DP83826E

Hello,

 I am using the DP83826 in basic mode. On page 9 pin 21 is described as an interrupt pin, but described as an input. I do not see the pin toggling. How do I configure pin 21 as an output?

  • 0
    TI__Genius 14005 points

    Hi Michael,

    Please refer to the descriptions for registers 0x11 and 0x12 (section 9.5.1.17 PHYSCR Register and 9.5.1.18 MISR1 Register). You can enable the interrupt pin in 0x11 and select the type of interrupt you want to enable in 0x12.

    Best regards,

    Melissa

  • 0 in reply to Melissa Chang
    Prodigy 20 points

    Hi Melissa,

     I am writing 0x107 to register 0x11 and 0x6420 to register 0x12, but do not get any interrupts.

  • 0 in reply to Michael Fowler
    TI__Genius 14005 points

    Hi Michael,

    I see you are enabling interrupt and asserting an interrupt all at the same time. Could you try first setting INTR/PWDN pin as interrupt by setting 0x11[0]=1, enabling interrupt by setting 0x11[1] =1, and then forcing an interrupt in 0x11[2]=1 sequentially?

    I see you are setting the Link Status Changed Enable. How are you introducing this interrupt in your system?

    Best regards,

    Melissa