SAM3XA TRNG

True Random Number Generator (TRNG) User Interface

Registers

Register Mapping

Address	Register	Name	Access	Reset
0x400BC000	Control Register	TRNG_CR	write-only	-
0x400BC010	Interrupt Enable Register	TRNG_IER	write-only	-
0x400BC014	Interrupt Disable Register	TRNG_IDR	write-only	-
0x400BC018	Interrupt Mask Register	TRNG_IMR	read-only	0x00000000
0x400BC01C	Interrupt Status Register	TRNG_ISR	read-only	0x00000000
0x400BC050	Output Data Register	TRNG_ODATA	read-only	0x00000000

Register Fields

TRNG Control Register

Name: TRNG_CR

Access: write-only

Address: 0x400BC000

31	30	29	28	27	26	25	24
KEY
23	22	21	20	19	18	17	16
KEY
15	14	13	12	11	10	9	8
KEY
7	6	5	4	3	2	1	0
-	-	-	-	-	-	-	ENABLE

• ENABLE: Enables the TRNG to provide random values

  Value	Name	Description
  0	-	Disables the TRNG.
  1	-	Enables the TRNG.

• KEY: Security Key

-

TRNG Interrupt Enable Register

Name: TRNG_IER

Access: write-only

Address: 0x400BC010

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	-	-	-	-	-	-	-
7	6	5	4	3	2	1	0
-	-	-	-	-	-	-	DATRDY

• DATRDY: Data Ready Interrupt Enable

  Value	Name	Description
  0	-	No effect.
  1	-	Enables the corresponding interrupt.

TRNG Interrupt Disable Register

Name: TRNG_IDR

Access: write-only

Address: 0x400BC014

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	-	-	-	-	-	-	-
7	6	5	4	3	2	1	0
-	-	-	-	-	-	-	DATRDY

• DATRDY: Data Ready Interrupt Disable

  Value	Name	Description
  0	-	No effect.
  1	-	Disables the corresponding interrupt.

TRNG Interrupt Mask Register

Name: TRNG_IMR

Access: read-only

Address: 0x400BC018

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	-	-	-	-	-	-	-
7	6	5	4	3	2	1	0
-	-	-	-	-	-	-	DATRDY

• DATRDY: Data Ready Interrupt Mask

  Value	Name	Description
  0	-	The corresponding interrupt is not enabled.
  1	-	The corresponding interrupt is enabled.

TRNG Interrupt Status Register

Name: TRNG_ISR

Access: read-only

Address: 0x400BC01C

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	-	-	-	-	-	-	-
7	6	5	4	3	2	1	0
-	-	-	-	-	-	-	DATRDY

• DATRDY: Data Ready

  Value	Name	Description
  0	-	Output data is not valid or TRNG is disabled.
  1	-	New Random value is completed.

TRNG Output Data Register

Name: TRNG_ODATA

Access: read-only

Address: 0x400BC050

31	30	29	28	27	26	25	24
ODATA
23	22	21	20	19	18	17	16
ODATA
15	14	13	12	11	10	9	8
ODATA
7	6	5	4	3	2	1	0
ODATA

• ODATA: Output Data

-