UPDM=MODE0
PWM Sync Channels Mode Register
| SYNC0 | Synchronous Channel 0  |  
| SYNC1 | Synchronous Channel 1  |  
| SYNC2 | Synchronous Channel 2  |  
| SYNC3 | Synchronous Channel 3  |  
| UPDM | Synchronous Channels Update Mode 0 (MODE0): Manual write of double buffer registers and manual update of synchronous channels 1 (MODE1): Manual write of double buffer registers and automatic update of synchronous channels 2 (MODE2): Automatic write of duty-cycle update registers by the DMA Controller and automatic update of synchronous channels  |  
| PTRM | DMA Controller Transfer Request Mode  |  
| PTRCS | DMA Controller Transfer Request Comparison Selection  |