54.5.5.2 Initialization Operation

Initialization brings the PUF controller to a consistent state after each reset and power cycle.

That operation includes a memory test and initialization of the DRNG. A Known Answer Test and an Entropy Evaluation are performed according to the NIST SP 800-90 recommendations.

After a reset or a power cycle, the PUF controller runs a memory test on the PUF SRAM. The memory test automatically resumes when interrupted by a reset and, once completed, is not repeated until the next power cycle.