DP83869HM: IBIS AMI Model

Hi Jesus,

Can you share what the need for the IBIS AMI model is? We typically only share standard IBIS models so I would like to know what the difference is and what you'll need from the AMI model

Cecilia

Hi Cecilia,

I am trying to characterize the channel in the HyperLynx environment using the SerDes Wizard which requires the AMI files. If there are no pre/post cursor adjustable settings then I may just run the simple IBIS model.

Thanks

Hi Jesus,

Cecilia is currently out of office and will respond back tomorrow.

Regards,

Adrian Kam

Hi Adrian,

Thank you for the update. I would also like to know how the jitter is allocated on the transmitter for the SGMII outputs. From the datasheet it looks like 300ps is the max. How much of it is deterministic and how much is gaussian?

Hi Jesus,

Currently we only have the general IBIS model, not the AMI model. 

As for your second question is there a reason you need to know the breakdown of the jitter? Typically that is not part of our validation but I will have to review internally if that is the case and confirm. 

Cecilia

Hi Cecilia,

Thank you for the reply. I went ahead and used the generic SerDes model to for my simulations and tried to match the driver specs from the datasheet. For the jitter the hyperLynx tool breaks down the jitter between gaussian and uniform so I just wanted to get a good characterization of the jitter. At the moment I allocated the 300ps of transmit jitter as uniform to get an idea.