A.1.5 Power domain ON status signals

The SSE-200 provides a set of output signals that indicate if a power domain is in the ON state:

  • PDSYSON when HIGH indicates that the PD_SYS power domain is ON. When LOW it indicates that the power domain is at a lower power state.
  • PDCPU0COREON when HIGH indicates that the PD_ CPU0CORE power domain is ON. When LOW it indicates that the power domain is at a lower power state.
  • PDCPU1COREON when HIGH indicates that the PD_ CPU1CORE power domain is ON. When LOW it indicates that the power domain is at a lower power state.
  • PDDEBUGON when HIGH indicates that the PD_ DEBUG power domain is ON. When LOW it indicates that the power domain is at a lower power state.

These status signals can be used by external expansion logic for separate power domains to determine if the power domain should remain powered, or to go to a lower power state.

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