Sometimes we don't use external debugger but OpenSDA on-board . The debugger controller clock setting need more attention because of slow debug by OpenSDA on-board. if you set the bus clock too high to make step by OpenSDA. The Non error will report at the stage of download(Fig2) and pause, even stop(Fig1).
Fig 1 Pause and stop error
Fig 1 Download error
when you encounter. you can set debugger follow some steps.
1 open debug configurations-Target setting-Edit...
2 In Edit you need remove the selection of 'use bus clock as debug controller clock source ' and then reopen the CW and project debug fine works.