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 />
SAMPLE/PRELOAD instruction – sample mode<br />
Get snapshot of normal chip output signals<br />
ShiftDR<br />
SO<br />
Mode<br />
ShiftDR<br />
SO<br />
Mode<br />
0<br />
1<br />
D Q<br />
D Q<br />
0<br />
1<br />
Core<br />
Logic<br />
0<br />
1<br />
D Q<br />
D Q<br />
0<br />
1<br />
Clk<br />
Clk<br />
Clk<br />
Clk<br />
SI<br />
ClockDR UpdateDR<br />
SI<br />
ClockDR UpdateDR<br />
Get snapshot of normal chip output signals<br />
Core<br />
Logic<br />
TDI<br />
TDO<br />
35
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