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Control Registers
513
SPNU563A–March 2018
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CPU Compare Module for Cortex-R5F (CCM-R5F)
13.3.6 CCM-R5F Key Register 3 (CCMKEYR3)
Figure 13-8. CCM-R5F Key Register 3 (CCMKEYR3) (Offset = 14h)
31 16
Reserved
R-0
15 4 3 0
Reserved MKEY3
R-0 R/WP-0
LEGEND: R/W = Read/Write; R = Read only; WP = Write in privileged mode only; -n = value after reset
Table 13-13. CCM-R5F Key Register 2 (CCMKEYR2) Field Descriptions
Bit Field Value Description
31-4 Reserved 0 Reads return 0. Writes have no effect.
3-0 MKEY3 Mode Key to select operation for Checker CPU Inactivity Monitor.
Read in User and Privileged mode. Write in Privileged mode only.
0 Read: Returns current value of the MKEY3.
Write: Active Compare Lockstep mode.
6h Read: Returns current value of the MKEY3.
Write: Self-test mode.
9h Read: Returns current value of the MKEY3.
Write: Error Forcing mode.
Fh Read: Returns current value of the MKEY3.
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.
13.3.7 CCM-R5F Polarity Control Register (CCMPOLCNTRL)
Figure 13-9. CCM-R5F Polarity Control Register (CCMPOLCNTRL) (Offset = 18h)
31 16
Reserved
R-0
15 8 7 0
Reserved POLARITYINVERT
R-0 R/WP-0
LEGEND: R/W = Read/Write; R = Read only; WP = Write in privileged mode only; -n = value after reset
Table 13-14. CCM-R5F Polarity Control Register (CCMPOLCNTRL) Field Descriptions
Bit Field Value Description
31-8 Reserved 0 Reads return 0. Writes have no effect.
3-0 POLARITYINVERT Polarity Inversion. This value is used to invert one of the 8 output compare signals from the
CPU1 to the CCM-R5F. Inverting any one signal will lead to compare error by the CPU Output
Compare Diagnostic.
Read in User and Privileged mode. Write in Privileged mode only.
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