NRF9160-SIBA-R7 datasheet(84/400 Pages) NORDIC

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Peripherals

Bit number

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

A A

Reset 0x00000000

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

R/W

Field

Value ID

Value

Description

HOST_CRYPTOKEY_SEL

Select the source of the HW key that is used by the AES engine

K_DR

Use device root key K_DR from CRYPTOCELL AO power domain

K_PRTL

Use hard-coded RTL key K_PRTL

Session

Use provided session key

6.1.8.1.1.2 HOST_IOT_KPRTL_LOCK

Address offset: 0x1A4C

This write-once register is the K_PRTL lock register. When this register is set, K_PRTL cannot be used and a

zeroed key will be used instead. The value of this register is saved in the CRYPTOCELL AO power domain.

Bit number

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

Reset 0x00000000

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

R/W

Field

Value ID

Value

Description

HOST_IOT_KPRTL_LOCK

This register is the K_PRTL lock register. When this register is set,

K_PRTL cannot be used and a zeroed key will be used instead. The

value of this register is saved in the CRYPTOCELL AO power domain.

Disabled

K_PRTL can be selected for use from register HOST_CRYPTOKEY_SEL

Enabled

K_PRTL has been locked until next power-on reset (POR). If K_PRTL is

selected anyway, a zeroed key will be used instead.

6.1.8.1.1.3 HOST_IOT_KDR0

Address offset: 0x1A50

This register holds bits 31:0 of K_DR. The value of this register is saved in the CRYPTOCELL AO power

domain. Reading from this address returns the K_DR valid status indicating if K_DR is successfully retained.

Bit number

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

A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A

Reset 0x00000000

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

R/W

Field

Value ID

Value

Description

HOST_IOT_KDR0

Write: K_DR bits 31:0.

Read: 0x00000000 when 128-bit K_DR key value is not yet retained in

the CRYPTOCELL AO power domain.

Read: 0x00000001 when 128-bit K_DR key value is successfully

retained in the CRYPTOCELL AO power domain.

6.1.8.1.1.4 HOST_IOT_KDR1

Address offset: 0x1A54

This register holds bits 63:32 of K_DR. The value of this register is saved in the CRYPTOCELL AO power

domain.

4418_1315 v2.0

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