When the REN bit is set (REN = 1), the CWG module will restart from the Shutdown state automatically.

Once all Auto-Shutdown conditions are removed, the hardware will automatically clear the SHUTDOWN bit. Once SHUTDOWN is cleared, the CWG module will resume operation upon the first rising edge of the CWG data input.

Important: The SHUTDOWN bit cannot be cleared in software if the Auto-Shutdown condition is still present.
Figure 1. Shutdown Functionality, Auto-Restart Enabled (REN = 1, LSAC = ‘b01, LSBD = ‘b01)