DP83620: IBIS model selector mode=SS ?

Carolyn Henry

Prodigy 40 points

Part Number: DP83620

What does "mode: SS" in the model selector correlate to in the hardware design so I know which to use in my analysis?

[Model Selector] g24q37x

g24q370 mode: SS = VSS, VDD = 3.3

g24q371 mode: SS = VDD, VDD = 3.3

|g24q372 mode: SS = VSS, VDD = 2.5

|g24q373 mode: SS = VDD, VDD = 2.5

thanks!

over 7 years ago

0 Ross Pimentel over 7 years ago

TI__Mastermind 23675 points

Hi Carolyn,

I will need to check on what 'SS' means as well.
This model was made a few years ago.

0 Ross Pimentel over 7 years ago in reply to Ross Pimentel

TI__Mastermind 23675 points

Hi Carolyn,

The 'ss' is for speed selection.
This PHY supports RMII and MII operation.
When RX_DV is LOW (VSS) it is configured for MII, which is 25MHz.
When RX_DV is HIGH (VDD) it is configured for RMII, which is 50MHz.

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DP83620: IBIS model selector mode=SS ?