SPRUJ55D September 2023 – July 2025 AM263P2 , AM263P2-Q1 , AM263P4 , AM263P4-Q1
In self-test error forcing mode, an error is forced at the self-test error signal. The compare unit is still running in lockstep mode and the key is switched to lockstep after one clock cycle. The ESM error flag “CCM-R5F - self-test” is expected after the self-test error forcing mode completes. Once the expected errors are seen, the application can clean the error through the ESM module.
Table 7-14 shows what error signals and flags are asserted in different operating mode. The behavior of different modes in this table for CPU compare is also valid for other diagnostics such as VIM compare and Checker CPU Inactivity Monitor.
| Mode | Key | Self Test Error Signal | Compare Error Signal | CMPE | STC | STET | STE |
|---|---|---|---|---|---|---|---|
| Active Compare Lockstep | 0000 | Enabled | Enabled | Enabled | Disabled | Disabled | Disabled |
| Self-Test | 0110 | Enabled | Disabled | Disabled | Enabled | Enabled | Enabled |
| Error Forcing | 1001 | Error | Error | Disabled | Disabled | Disabled | Disabled |
| Self-Test Error Forcing | 1111 | Error | Enabled | Enabled | Disabled | Disabled | Disabled |