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TRF7962A: RF Field down after tx/rx cycle - Code Status Control reset from 0x21 to 0x8F

Part Number: TRF7962A

Hey,

I am currently implementing a firmware for a device using the TRF7962A. It should support the SLIX2 Privacy mode. Especially getting them out of it again

with a "GET-RANDOM" and a "SET-PASSWORD command without shutting of the rf field.

Before a command I set my Code Status Control to 0x21 / 0b00100001 to enable the rf field. After TX the command and RX the result the Code Status Control (when reading it directly from the TRF7962A) changed to  0x8F / 0b10001111 resulting in a disabled rf field.

This means I am unable to revive chips from privacy mode. Is there anything I have missed to keep the rf field on even after a command?

PS: With a proxmark3 as simulated tag it works fine, as it ignores if the rf field goes down. So the code for get-random/set-password is fine.