Check the conditioning function

To check the status of the conditioning function, follow these steps.

1. Initiate a software reset by writing 1 to the register RNGCONTROL.CONTROL.SOFTRST.
2. Write to the following control registers:
   • Write 4 to register CONTROL.NB128BITBLOCKS.
   • Write 1 to register CONTROL.TESTEN.
   • Write 1 to register CONTROL.FIFOWRITESTARTUP.
   • Write 1 to register CONTROL.ENABLE.
3. Write the data to the register KEY.
4. Write the data to the register TESTDATA. After each write, wait until the TESTDATABUSY flag is low.
5. Read the result from the register FIFO.

The following table contains example vectors from section F.2.1 in NIST Special Publication 800-38A.

Table 1. Known-answer test for conditioning function

	128-bit format	32-bit APB format
Key	0x2B7E151628AED2A6ABF7158809CF4F3C	0x16157E2B 0xA6D2AE28 0x8815F7AB 0x3C4FCF09
Input block #1	0x6BC0BCE12A459991E134741A7F9E1925	0xE1BCC06B 0x9199452A 0x1A7434E1 0x25199E7F
Input block #2	0xAE2D8A571E03AC9C9EB76FAC45AF8E51	0x578A2DAE 0x9CAC031E 0xAC6FB79E 0x518EAF45
Input block #3	0x30C81C46A35CE411E5FBC1191A0A52EF	0x461CC830 0x11E45CA3 0x19C1FBE5 0xEF520A1A
Input block #4	0xF69F2445DF4F9B17AD2B417BE66C3710	0x45249FF6 0x179B4FDF 0x7B412BAD 0x10376CE6
Expected output	0x3FF1CAA1681FAC09120ECA307586E1A7	0xA1CAF13F 0x09AC1F68 0x30CA0E12 0xA7E18675