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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<strong>Boundary</strong> <strong>Scan</strong> Working Modes<br />
IDCODE instruction:<br />
Connects the component device identification register serially<br />
between TDI and TDO in the Shift-DR TAP controller state<br />
Allows board-level <strong>test</strong> controller or external <strong>test</strong>er to read out<br />
component ID<br />
Required whenever a JEDEC identification register is included<br />
in the design<br />
TDI<br />
Version Part Number Manufacturer ID 1<br />
TDO<br />
4-bits<br />
Any format<br />
16-bits<br />
Any format<br />
11-bits<br />
Coded form of JEDEC<br />
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