ECE354 S'09 hw8 - sol

ECE354 S'09 hw8 - sol - NEW JERSEY INSTITUTE OF TECHNOLOGY...

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NEW JERSEY INSTITUTE OF TECHNOLOGY ACADEMIC YEAR 2008-2009 SEMESTER 2 ECE354 DIGITAL TEST S OLUTION HW8 1. The pattern set and the good-machine output sequence for 2 F has been computed in HW6 Pb. 1. We first need to compute the good-machine output sequence for 1 F . 12 g A B C D 1 g 2 g 3 g 4 g 5 g 6 g 7 g 8 g 9 g 10 g 11 g 1 F 2 F Fig. 1. Circuit for HW7 Since 10 12 1 g g F = = , we have (from HW3): CD AB g F = = 10 1 . The MISR state progression equations are: 2 3 1 2 3 2 1 2 1 S Old S New F S Old S New F S Old S Old S New = = = 1 A B C D 1 F 0 0 0 1 1 1 0 0 0 1 0 1 0 0 1 0 0 1 0 1 1 0 0 1 1 1 1 0 0 0 0 1 1 0 1 1 0 1 1 0 0 1 0 1 1 1 0 1 0 1 1 1 0 1 0 1 1 1 0 0 1 1 1 1 0 0 1 1 1 0 0 0 1 1 0
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S2 S3 Fig. 2. The data compressor From 1 F From 2 F 1 F 2 F S1 S2 S3 Comment 0 0 0 Initial seed 1 1 1 1 0 1 1 0 0 1 1 1 0 1 0 1 1 0 1 1 1 1 1 1 1 0 0 0 1 1 1 1 1 1 1 0 1 0 0 1 1 1 0 1 0 1 1 0 1 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 1 1 1 1 GM Signature Since AB g F = ) 1 / ( * 7 1 , 2 7 2 ) 1 / ( * F g F = The * 1 F sequence is, therefore: We determine the bad-machine signature using the MISR equations shown above. 2
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This note was uploaded on 02/18/2010 for the course ECET 354 taught by Professor Sa during the Spring '07 term at NJIT.

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ECE354 S'09 hw8 - sol - NEW JERSEY INSTITUTE OF TECHNOLOGY...

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