Freescale Semiconductor StarCore SC140 - Manual (Page 221)

Processing States
SC140 DSP Core Reference Manual 5-41
5.7 Processing States
The SC140 core is always in one of the five processing states:
• Execution
• Debug
• Reset
• Wait
• Stop
These states are described in the sections that follow. In some states, the operation of peripherals and other
blocks is affected.
Note: The descriptions of the change in operation given here may be different for certain products that
utilize a SC140 core. Consult the product-specific manuals for details of actions in each processing
state.
5.7.1 Processing State Change Instructions
Processing state changes can be initiated by hardware or software means. Table 5-16 lists the instructions
that can initiate a processing state change.
Table 5-16. Processing State Change Instructions
Instruction Description
DEBUG Enter debug state
DEBUGEV Signal a debug event
STOP Stop processing (lowest power stand-by)
WAIT Wait for interrupt (low power stand-by)