AnsweredAssumed Answered

TRNG Errata?

Question asked by Chris Cowdery on Feb 11, 2020
Latest reply on Feb 19, 2020 by Chris Cowdery

Hi All,

 We are experiencing an issue with the TRNG. Inside the driver, there is mention of a defect in function trng_ReadEntropy().

 

 /* Dummy read. Defect workaround. * TRNG could not clear ENT_VAL flag automatically, application * had to do a dummy reading operation for anyone TRNG register * to clear it firstly, then to read the RTENT0 to RTENT15 again */

 

We are finding that after 1 or more reads, the peripheral starts to behave inconsistently, and cannot be used.

 

Is the Errata documented anywhere?, does it apply to the iMXRT1021?

 

Thanks,

 

Chris.

Outcomes