DP83848Q-Q1: IBIS model have some irregular behavior at falling edge of RXD output

Hello,

DP83848 is an older device and support is very limited.

Could you please provide the test bench used? A picture would be sufficient.

Sincerely,

Gerome

This is the test bench at Plot STM32H757 is used at receiving end.

Hello,

I want to request a sanity check on the model to rule out unintentional loading by the receiver. On the RX_D0 line, could you please insert a 5pF load to GND instead of the receiver? It is unclear how this specific IBIS model was characterized due to the long lifespan of the part, but in newer IBIS models (DP8382x family, DP8386x family), this is the typical test bench. If this falling edge is clean, this would lead to impedance mismatch in your application instead of issues with the IBIS model.

Sincerely,

Gerome