Information

CNT = (MOD - 0x0001) -> MOD
CNT = (CNTIN + 0x0001) -> CNTIN
loading points if CNTMIN = 1
loading points if CNTMAX = 1
up-down counting mode
CNT = MOD -> CNTIN
loading points if CNTMAX = 1 or CNTMIN = 1
up counting mode
Figure 37-207. Boundary Cycles and Loading Points
37.4.11.4 MOD Register Synchronization
The MOD register synchronization updates the MOD register with its buffer value. This
synchronization is enabled if (FTMEN = 1).
The MOD register synchronization can be done by either the enhanced PWM
synchronization (SYNCMODE = 1) or the legacy PWM synchronization (SYNCMODE
= 0). However, it is expected that the MOD register be synchronized only by the
enhanced PWM synchronization.
In the case of enhanced PWM synchronization, the MOD register synchronization
depends on SWWRBUF, SWRSTCNT, HWWRBUF and HWRSTCNT bits according to
this flowchart:
Functional Description
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
962 Freescale Semiconductor, Inc.