Forum Discussion

Shweta_sawant's avatar
Shweta_sawant
Icon for Occasional Contributor rankOccasional Contributor
1 year ago

MAX10 IBIS model- stair stepping

I am using MAX10 IBIS model from that model- lvttl_rio_d4s2 in this model the power clamp table exhibits stair-stepping . According to IBIS specification ,There should be no stair stepping of any I...
Board Debug
AqidAyman_Altera's avatar
AqidAyman_Altera
Icon for Regular Contributor rankRegular Contributor
1 year ago

Hi Shweta,


Max 10 does support the PCI Clamp Diode, as what I found in the Max 10 GPIO User Guide:

https://www.intel.com/content/www/us/en/docs/programmable/683751/22-1/pci-clamp-diode.html


There are also mentioned that if you are using the I/O standard with a higher voltage than the VCCIO of the I/O bank, you have to enable the clamp diode. Refer here:

https://www.intel.com/content/www/us/en/docs/programmable/683751/22-1/guidelines-enable-clamp-diode-for-lvttl.html


For your information, the IBIS model's name with "_p" has the clamp diode enabled.


Regards,

Aqid