Datasheet

Control Registers

www.ti.com

13.3.9 CCM-R5F Key Register 4 (CCMKEYR4)

Figure 13-11. CCM-R5F Key Register 4 (CCMKEYR4) (Offset = 20h)

31 16

Reserved

R-0

15 4 3 0

Reserved MKEY4

R-0 R/WP-0

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

Table 13-16. CCM-R5F Key Register 4 (CCMKEYR4) Field Descriptions

Bit Field Value Description

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

3-0 MKEY4 Mode Key to select operation for Power Domain Inactivity Monitor

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

0 Read: Returns current value of the MKEY4.

Write: Active Compare Lockstep mode

6h Read: Returns current value of the MKEY4.

Write: Self-test mode.

9h Read: Returns current value of the MKEY4.

Write: Error Forcing mode.

Fh Read: Returns current value of the MKEY4.

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.

496

SPNU562–May 2014

CPU Compare Module for Cortex

-R5F (CCM-R5F)

Submit Documentation Feedback