Slides explaining Boundary Scan test principles - goJTAG
Slides explaining Boundary Scan test principles - goJTAG
Slides explaining Boundary Scan test principles - goJTAG
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The True/Complement Code<br />
True<br />
part<br />
Complement<br />
part<br />
00 11<br />
01 10<br />
Open<br />
Assume stuck-at-0<br />
Short<br />
00 00<br />
00 00<br />
All-0 0 and<br />
all-1 1 codes<br />
are not<br />
forbidden<br />
anymore!<br />
10 01<br />
Assume wired AND<br />
00 00<br />
11 00<br />
11 00<br />
To improve the diagnostic resolution Wagner proposed the<br />
True/Complement Code in 1987.<br />
The <strong>test</strong> length became equal 2⎡log<br />
2<br />
(N)⎤<br />
19