25.11.1.2 External Input Source

External shutdown inputs provide the fastest way to safely suspend CWG operation in the event of a Fault condition. When any of the selected shutdown inputs goes Active, the CWG outputs will immediately go to the selected override levels without software delay. The override levels are selected by the LSBD and LSAC bits in CWGxAS0 register. The following input sources can be selected to cause a Shutdown condition:
  • CLC2_out/CLC3_out (low causes shutdown)
  • CMP2_out (low causes shutdown)
  • CMP1_out (low causes shutdown)
  • TMR6_postscaled (high causes shutdown)
  • TMR4_postscaled (high causes shutdown)
  • TMR2_postscaled (high causes shutdown)
  • Pin selected by CWGxPPS (low causes shutdown)

The shutdown input sources are individually enabled by the ASyE bits in the CWGxAS1 register.

Important: Shutdown inputs are level sensitive, not edge sensitive. The Shutdown state cannot be cleared, except by disabling auto-shutdown, as long as the shutdown input level persists.