3.10 Sample Count register, SAMPLE_CNT1

The SAMPLE_CNT1 register controls how often the TRNG samples the single output bit of the ring oscillator.

The following table lists the SAMPLE_CNT1 bit assignments.

Table 3-10 SAMPLE_CNT1

Bits Name Description
[31:0] SAMPLE_CNTR1

Sets the number of rng_clk cycles between two consecutive ring oscillator samples.

Note:

If the Von Neumann balancer is bypassed, the minimum value for sample counter must not be less than 17. Due to the autocorrelation test, the data bus from the collector must stay steady for 17 rng_clk clocks.
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