JTAG Chain Debugging tab
Allows you to debug your JTAG chain by running commands to step through the state of the JTAG TAP controller, or repeat the commands from a previous session of the tool.
To playback the debugging sequences from a previously saved session, use the following commands:
- Open JTAG Chain Log— Allows you to browse to, open, and run a saved JTAG Chain Debugger session log.
- Stop— Allows you to stop the running of the commands from the saved session log.
To manually shift in the JTAG sequences, use the following commands:
- Command— Allows you to run one of the following commands for debugging the JTAG chain:
- Run test— Allows you to place the TAP controller in the specified state for a specified number of clocks.
- Shift IR— Allows you to specify a scan pattern that you can apply to the target instruction registers.
- Shift DR— Allows you to specify a scan pattern that you can apply to the target data registers.
- Goto State— Allows you to move the TAP controller from one stable state to another for further testing.
- TAP state— Allows you to set the target state for the commands. The selected target state will be reflected.
- Clocks— Allows you specify the number of clocks to use when running a command.
- TDI— Allows you read the results of a scan in the TDI field.
- Run— Allows you to apply the selected Command and Option setting to the JTAG chain.