SPRUJ17I March 2022 – August 2025 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
During the Compare Match Test, there are four different test patterns generated to stimulate the CCM-R5F. An identical vector is applied to both input ports at the same time expecting a compare match. These patterns cause the self-test logic to exercise every CPU compare bus output signal in parallel. If the compare unit produces a compare mismatch then the self-test error flag is set, the self-test error signal is generated, and the Compare Match Test is terminated.
The four test patterns used for the Compare Match Test are:
These four test patterns will take four clock cycles to complete. Table 7-12 illustrates the sequence of Compare Match Test.
| CPU 1 (Main CPU) Signal Position | CPU 2 (Checker CPU) Signal Position | Cycle | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n:8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | n:8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| 1s | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1s | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
| 0s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 0xA | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0xA | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 2 |
| 0x5 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0x5 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 3 |