DP83TG720R-Q1: Interrupt and register 0x11

Jared Becker

Part Number: DP83TG720R-Q1

Hi Team,

Would it be possible to double check the default value of register 0x11 at boot up? I am expecting a value of 0x000A, but I am seeing 0x000B.

Also, the interrupt line is starting low. Is there a way to clear the interrupt so that it will go higher after startup? Is it possible that 0x10[7] needs to be set?

Thank you,

Jared

over 4 years ago

0 Adrian Kam over 4 years ago

TI__Expert 5425 points

Hi Jared,

The default value of 0x000B you are seeing is correct. The datasheet has a typo.

Reading either register 0x0012 or 0x0013 should clear the interrupt.

Regards,

Adrian Kam

0 Jared Becker over 4 years ago in reply to Adrian Kam

TI__Genius 11845 points

Hi Adrian,

Thanks for the support! Can you please help me understand why reading register 0x0012 or 0x0013 will clear the interrupt?

Thanks,

Jared

0 Adrian Kam over 4 years ago in reply to Jared Becker

TI__Expert 5425 points

Hi Jared,

It is simply the way the PHY is designed. It helps save one additional register transaction to clear the interrupt line.

Regards,

Adrian Kam

Interface

Interface forum

DP83TG720R-Q1: Interrupt and register 0x11