TRF7970A: SDM with Mifare stops after 2 clocks on SDM Bit clock

Part Number:TRF7970A

Hi,

We currently have the same issue as the referenced post. But we unlike the original poster, we don't have a module that works

>What is the issue faced with OK Module?
=> OK module is no problem, we get the output.
   The problem is why NG module does not continue (just 2 clocks) with the same modules, but not the same individual.
   Currently we have 5 % failure ratio, not continuing the output.

I understand that the post got pulled offline due to NDA issues, but we can discuss things in private as we have a current NDA with TI and access to the Mifare code in our Secure access.

Also we understand Mifare is not recommended for current designs but we have to support it while the client is rolling it's updated card infrastructure.