22.214.171.124. JTAG Chain Integrity Tab
Use the JTAG Chain Integrity tab to check the JTAG chain for potential failure, which can be caused by either a short circuit or an open JTAG circuit.
|JTAG chain integrity test
|Run the Programmer Auto Detect feature, which detects devices in a chain and automatically adds supported devices to the Device list in the Programmer. The devices are added in the order in which they exist in the device chain.
If the Auto Detect feature fails to detect the JTAG chain, click Test JTAG Chain to run a JTAG chain integrity test to analyze the failure.
|IDCODE iteration test
|Test for chain integrity and intermittent JTAG chain communication failure. This feature is turned off by default.
The IDCODE iteration test cycles through Reset and Shift DR states to read IDCODEs from the device chain, and reports the following information:
Results from the IDCODE iteration test appear in text format in the Session log pane and in graphic format in the Device chain pane.