Acronym · Test & DFT
MISR (Multiple Input Signature Register)
An LFSR with XOR inputs on several stages, used to compress a long stream of test responses into a short signature. A single wrong bit anywhere in the response stream almost always changes the final signature.
- Also known as
- Signature register
- Type
- Acronym
- Domain
- Test & DFT, Built-in self-test
Notes
Aliasing, where a faulty response happens to produce the golden signature, is possible but has probability roughly 2^-n for an n-bit MISR.
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