The key configuration choices available to each module are as follows:
- Options for SyncIn
- Load own counter with phase register on an incoming sync strobe—enable (EN) switch closed
- Do nothing or ignore incoming sync strobe—enable switch open
- Sync Source mode, provides a sync at PWM boundaries—SyncOut connected to CTR = PRD
- Sync Source mode, provides a sync at any programmable point in time—SyncOut connected to CTR = CMPB
- Module is in standalone mode and provides no sync to other modules—SyncOut connected to X (disabled)
- Options for SyncOut
- Sync Source mode, provides a sync at PWM boundaries—SyncOut connected to CTR = PRD
- Sync Source mode, provides a sync at any programmable point in time—SyncOut connected to CTR = CMPB
- Module is in standalone mode and provides no sync to other modules—SyncOut connected to X (disabled)
For each choice of SyncOut, a module can
also choose to load its own counter with a new phase value on a SyncIn strobe input or
choose to ignore the value (that is, by the enable switch). Although various combinations
are possible, the two most common—Sync Source module and Sync Receiver module modes —are
shown in Figure 7-246.