| Συγγραφείς: | Kavousianos X., Kalligeros E., Nikolos D. |
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| Τίτλος: | "Multilevel Huffman Coding: An Efficient Test-Data Compression Method for IP Cores" |
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| Περιοδικό: | IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems |
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| Volume: | 26 |
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| Αριθμός: | 6 |
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| Σελίδες: | 1070-1083 |
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| Έτος: | 2007 |
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| Εκδότης: | |
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| Να εμφανιστεί: | Όχι |
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| Δεσμός: | http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4167987 |
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| ISI: | Όχι |
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| Impact Factor: | |
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| Όνομα αρχείου: | |
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| Περίληψη: | A new test-data compression method suitable for
cores of unknown structure is introduced in this paper. The proposed method encodes the test data provided by the core vendor
using a new, very effective compression scheme based on multilevel
Huffman coding. Each Huffman codeword corresponds to three
different kinds of information, and thus, significant compression
improvements compared to the already known techniques are
achieved. A simple architecture is proposed for decoding the
compressed data on chip. Its hardware overhead is very low and
comparable to that of the most efficient methods in the literature.
Moreover, the major part of the decompressor can be shared
among different cores, which reduces the hardware overhead of
the proposed architecture considerably. Additionally, the proposed
technique offers increased probability of detection of unmodeled
faults since the majority of the unknown values of the test sets are
replaced by pseudorandom data generated by a linear feedback
shift register. |
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English