When the host debugger is connected to the target via the USB TAP probe, the probe is always in one of these states (modes):
run,pause or
mixed mode.
The Run/Pause LED on the probe will indicate the mode.
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Run mode - in this mode, all target system processor cores execute the target code. The Run/Pause LED will be green.
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Pause mode - in this mode, all target system processor cores have stopped executing the target code. The Run/Pause LED will be red.
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Mixed mode - in this mode, some target system processor cores are in run mode and others are in pause mode. The Run/Pause LED will be orange.