Title :
High speed and highly testable parallel two-rail code checker
Author :
Omaña, Martin ; Rossi, Daniele ; Metra, Cecilia
Author_Institution :
DEIS, Bologna Univ., Italy
Abstract :
In this article, we propose a high speed and highly testable parallel two-rail code checker, which features a compact structure and is totally-self-checking or strongly code-disjoint with respect to a wide set of realistic faults. The proposed checker is also particularly suitable to implement embedded two-rail code checkers, as it only requires two input codewords for fault detection. Our checker can be employed to check the correct operation of a connected functional block using the two-rail code, to implement the output two-rail code checker of "normal" checkers for unordered codes, or to join together the error messages produced by various checkers (possibly using different codes) present within the same self-checking system. The behavior of our checker has been verified by means of electrical level simulations (performed using HSPICE), considering both nominal values and statistical variations of electrical parameters.
Keywords :
built-in self test; error detection codes; integrated circuit design; integrated circuit reliability; logic design; logic simulation; logic testing; SCC; embedded code checkers; error detecting code; fault detection; functional block correct operation checking; high reliability applications; high speed code checker; highly testable code checker; parallel two-rail code checker; self-checking circuits; strongly code-disjoint circuit; totally-self-checking circuit; two input codewords; unordered codes; Aerospace electronics; Automatic testing; Circuit faults; Circuit simulation; Circuit testing; Error correction codes; Fault detection; Medical simulation; Medical tests; Space technology;
Conference_Titel :
Design, Automation and Test in Europe Conference and Exhibition, 2003
Print_ISBN :
0-7695-1870-2
DOI :
10.1109/DATE.2003.1253675
