An Architecture of Embedded Decompressor with Reconfigurability for Test Compression

URI http://harp.lib.hiroshima-u.ac.jp/hiroshima-cu/metadata/6024
File
Title
An Architecture of Embedded Decompressor with Reconfigurability for Test Compression
Author
氏名 ICHIHARA Hideyuki
ヨミ イチハラ ヒデユキ
別名 市原 英行
氏名 SAIKI Tomoyuki
ヨミ サイキ トモユキ
別名 井上 智生
氏名 INOUE Tomoo
ヨミ イノウエ トモオ
別名
Subject
test compression
ATE
reconfigurability
variable-length coding
test application
Abstract

Test compression / decompression scheme for reducing the test application time and memory requirement of an LSI tester has been proposed. In the scheme, the employed coding algorithms are tailored to a given test data, so that the tailored coding algorithm can highly compress the test data. However, these methods have some drawbacks, e.g., the coding algorithm is ineffective in extra test data except for the given test data. In this paper, we introduce an embedded decompressor that is reconfigurable according to coding algorithms and given test data. Its reconfigurability can overcome the drawbacks of conventional decompressors with keeping high compression ratio. Moreover, we propose an architecture of reconfigurable decompressors for four variable-length codings. In the proposed architecture, the common functions for four codings are implemented as fixed (or non-reconfigurable) components so as to reduce the configuration data, which is stored on an ATE and sent to a CUT. Experimental results show that (1) the configuration data size becomes reasonably small by reducing the configuration part of the decompressor, (2) the reconfigurable decompressor is effective for SoC testing in respect of the test data size, and (3) it can achieve an optimal compression of test data by Huffman coding.

Description Peer Reviewed
Journal Title
IEICE TRANSACTIONS on Information and Systems
Volume
E91-D
Issue
3
Spage
713
Epage
719
Published Date
2008-03-01
Publisher
電子情報通信学会(IEICE)
ISSN
0916-8532
Language
eng
NIIType
Journal Article
Text Version
出版社版
Rights
copyright©2008 IEICE
Relation URL
Old URI
Set
hiroshima-cu