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Random Number Generator

16.7.1.16 HWOPT Register (Offset = 78h) [reset = X]

HWOPT is shown in Figure 16-19 and described in Table 16-21.

TRNG Engine Options Information

Figure 16-19. HWOPT Register

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

RESERVED

R-X

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

RESERVED NR_OF_FROS RESERVED

R-X R-18h R-X

Table 16-21. HWOPT Register Field Descriptions

Bit Field Type Reset Description

31-12 RESERVED R X

Software should not rely on the value of a reserved. Writing any

other value than the reset value may result in undefined behavior.

11-6 NR_OF_FROS R 18h

Number of FROs implemented in this TRNG, value 24 (decimal).

5-0 RESERVED R X

Software should not rely on the value of a reserved. Writing any

other value than the reset value may result in undefined behavior.

1179

SWCU117A–February 2015–Revised March 2015 Random Number Generator

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