Datasheet

Control Registers

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13.3.4 CCM-R5F Key Register 2 (CCMKEYR2)

Figure 13-6. CCM-R5F Key Register 2 (CCMKEYR2) (Offset = 0Ch)

31 16

Reserved

R-0

15 4 3 0

Reserved MKEY2

R-0 R/WP-0

LEGEND: R/W = Read/Write; R = Read only; WP = Write in Privileged mode only; -n = value after reset

Table 13-11. CCM-R5F Key Register 2 (CCMKEYR2) Field Descriptions

Bit Field Value Description

31-4 Reserved 0 Reads return to zeros and writes have no effect.

3-0 MKEY2 Mode Key to select operation for VIM Output Compare Diagnostic

Read in User and Privileged mode. Write in Privileged mode only.

0 Read: Returns current value of the MKEY2.

Write: Active Compare Lockstep mode

6h Read: Returns current value of the MKEY2.

Write: Self-test mode.

9h Read: Returns current value of the MKEY2.

Write: Error Forcing mode.

Fh Read: Returns current value of the MKEY2.

Write: Self-test Error Forcing mode.

Other values Note: It is recommended to not write any other key combinations. Invalid keys will result in

switching operation to lockstep mode.

492

SPNU562–May 2014

CPU Compare Module for Cortex

-R5F (CCM-R5F)

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