NXP Semiconductors MPC5606S - And PWM Mode Functions

Stepper Motor Controller (SMC)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 1139
Figure 35-18. Typical quad half H-bridge mode configuration
35.4.1.2 Relationship between PWM mode and PWM channel enable
The pair of SMC channels cannot be placed into dual full H-bridge mode unless both SMC channels have
been enabled (MCCCx[MCAM] not equal to 0) and dual full H-bridge mode is selected for both PWM
channels (MCCCx[MCOM] = 0x3). If only one channel is set to dual full H-bridge mode, this channel will
operate in full H-bridge mode, the other as programmed.
35.4.1.3 Relationship between Sign, Duty, Dither, RECIRC, Period, 
and PWM mode functions
35.4.1.3.1 PWM alignment modes
Each PWM channel can be programmed individually to three different alignment modes. The alignment
mode is determined by the
MCCCx[MCAM] bits in the corresponding channel control register.
Left aligned (MCCCx[MCAM] = 0x1): The output will start active (low if MCCTL1[RECIRC] = 0 or high
if MCCTL1[RECIRC] = 1) and will turn inactive (high if MCCTL1[RECIRC] = 0 or low if
MCCTL1[RECIRC] = 1) after the number of counts specified by the corresponding duty cycle register.
PWM Channel x
PWM Channel x + 1
MnC0P
MnC0M
MnC1P
MnC1M
Released
PWM Output
V
SSM
V
DDM
V
SSM
V
DDM
Released
PWM Output