DP83561-SP: Complete IBIS model with BiDir TD pins

Ryan Andrasco

Part Number: DP83561-SP

Tool/software:

The IBIS model provided for the DP83561-SP has all of the TD pins marked as input only despite these pins being I/O.
Is there a version of the IBIS model that provides the TD pin as outputs?

over 1 year ago

0 Shane Hauser over 1 year ago

TI__Mastermind 38835 points

Hi Ryan,

By 'TD' Pins are you referring to the MDI-side TD_P_A/B/... pins or the MAC-side TX_D0/1/... pins?

The MDI-side pins are labeled as NC because, similar to this E2E, the IBIS model is intended to be used on the MAC side only.
The TX_D0/1/... pins are inputs only, these pins should not be used as outputs. From the datasheet:

Best,

Shane

0 Ryan Andrasco over 1 year ago in reply to Shane Hauser

Prodigy 20 points

Hi Shane,

I was referring to the MDI-side TD_P_A/B/etc pins.
My goal was to simulate between these pins and the magnetics on my design. I assume the response is the same as the other E2E then?

0 Shane Hauser over 1 year ago in reply to Ryan Andrasco

TI__Mastermind 38835 points

Hi Ryan,

Yes you are correct. Unfortunately we don't have an IBIS model that tracks the MDI-side pins.

Best,

Shane

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DP83561-SP: Complete IBIS model with BiDir TD pins