IBIS model for TMS320C6A8168

Mahesh,

We do have an IBIS model and we are working to add it to the device product folder.  If you need it quickly, let me know and I will send it to you.

Regards,
Marc

Hello Marc,

Yes we need it as we are planning to start the Pre layout SI analysis.

Just for your info we already have an NDA with TI (NDA No. 2011-01-31-33966). In case you need, my e-mail ID is mahesh.shinde@patni.com

Regards,

Mahesh Shinde

Hello,

we also now require an IBIS model in order to verify our board design. Where am I able to get one from?

Thanks,

Ralph

Hello

We also need an IBIS model for the DM8168 rather urgently. In fact we were told by local TI support that no model would be available. It is good to known they were wrong in this case :-)

Please send it to david.dominguez@ikusi.com

Hi Marc,

I think it would be easiest if you could attach it to a posting then anyone can get it. I'd prefer not to have to wait until the new EZSDK comes out in order to get hold of the IBIS model.

Thanks,

Ralph

Thanks Marc, this is of great use to us.

Ralph

Hello,

   Is the final version of the IBIS model available. 

Thank You,

Ravi

Ravi,

Unfortunately it is not yet available. I will be sure to update this thread when it is available.

Regards,
Marc

Hi Marc,

Can you please share the link for latest IBIS models?

Thanks & Best Regards

Feroz

Hi Marc,

Could you please provide an update? Is it going to reflect silicon revision 2.x?

Thanks and best regards,

Anthony

Hello,

The model attached to this thread is still the current version.  I am not sure what the plans are to update the model.

Regards,
Marc

Hello ,

Yes we need the updated IBIS Model with no errors.

Please arrange it asap.

Best Regards ,

Parth

Parth,

What errors are you referring too? The model is still valid.

The only thing missing is the differential pairs for the DQ lines but all other modeled signals are correct.

BR,
Steve

Is there model without this error? I'm sorry, but I'm new in this subject.

Thank you!

The model available on the TI web page is the latest and includes the differential pair information.

Please note though that we do not recommend using IBIS models for DDR and other high speed serial interfaces. We recommend using the data sheet layout rules.

BR,

Steve

Is it rigth, that model correct for AM3894? I'm looking for IBIS model for AM3894, and there isn't that model on that page, but there is IBIS model on TMS320DM8168 page. Can I use it from TMS320DM8168 page?

Thank you! 

Some of the signal names may be different since not all features are available across each device, but the IO characteristics are the same so yes, you can use this model.

BR,

Steve

Hi Steve,

Small question, your current IBIS model for the DM8168 still has DDR3 data bus lines that are "NC". I have managed to hack this using some older IBIS file on this forum, however the differential signals remain a problem, any possibility to sort this as well ?

Regards,

Johan Kruger

Hi Steve,

Sorry to nag but I posted a question about your statement that TI does not recommend the use of IBIS models for layout verification on the DM816x. I find this strange as this is how the Guru's in Signal Integrity, the Eric Bungati etc. are going and has been for numerous years. Your model is lacking completeness on the DDR3 data lines, this I have hacked to at least be able to perform SI Simulations on the board. The differential drivers on the control lines are also a problem and has been for some time, any intend to rectify this ?

I am a firm believer in SI Simulations using Hyperlynx or the sorts and some of the other TI processor teams seam to share this view, please explain ?

Regards,

Johan Kruger

Johan,

I understand your concerns. Unfortunately with the limited resources available we have not been able to completely clean up the IBIS models for these particular processor families. This has been a very low priority since, as I have mentioned previously, when the design rules in the datasheets are followed we simply have not had any questions or failures, so the need to simulate has been very low.

The models currently available were generated a year ago and it is certainly possible that new updated models could be generated but you would need to work with your local FAE to have this increased in priority unfortunately.

This is not that we don't believe simulation is important. It is that we have found that the quickest and most reliable way to get customers to working hardware is to give solid design rules and when these are followed boards have worked.

BR,

Steve

Hi Marc,

My customer open the IBIS model and find there are Model_x in it, they are not sure what are they and if they matters.

Does that mean customer is not using IBIS model in correct way or they can ignore these ?

Thanks and Best Regards,

Eason

Eason,

Which model are they looking at? The models on the web include selectors for each pin. The selectors include different models for each pin corresponding to a specific configuration for that pin. It is necessary for the customer to know exactly how the pin is configured in order to be able to select the correct model from the selector for that use case.

The use case for the pin is under customer control so depends on their specific software.

They can examine the IBIS model 'datasheet' which is included in the downloadable ZIP file for more information on exactly how each model is configured.

BR,

Steve