SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
The match test mode checks to make sure identical inputs on each comparator provide passing outputs. This makes sure that the comparator inputs and comparators themselves are working correctly and that a fault is successfully propagated to the module output.
This test is executed using two different patterns fed to the two inputs of each comparator (bit) in the comparator block: {0,0} and {1,1}. Both inputs can provide a passing output to the comparator since both patterns are providing identical inputs to both inputs of the comparator. This tests output-stuck-at-one, input-stuck-at-one, and input-stuck-at-zero issues. Table 38-1 shows the test execution sequence for a single comparator in the comparator block.
Clock Cycle | A Input (Primary Module) of Comparator | B Input (Secondary Module) of Comparator | Output |
---|---|---|---|
0 | 0 | 0 | 0 |
1 | 1 | 1 | 0 |