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JTAG Commands

Tcl Training. JTAG Commands. Aim and Topics. Aim Looking at JTAG specific commands Topics The unit command The instance command The signal command The pin command The integer command. Signal Command Examples. Setting all Boundary Scan Cells of a device to 0:.

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JTAG Commands

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  1. Tcl Training JTAG Commands

  2. Aim and Topics • Aim • Looking at JTAG specific commands • Topics • The unit command • The instance command • The signal command • The pin command • The integer command

  3. Signal Command Examples • Setting all Boundary Scan Cells of a device to 0: # -> Select the Sample/Preload instruction instance U2 set EXTEST unit ir write # -> Set all the Boundary Scan bits to Zero foreach s [instance / signals] { signal ${s} set 0 } unit dr write Set instruction extest For each signal: loop Get the list of all instance signals Set signal $s to 0 Write DR register

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