NXP Semiconductors MPC5566 - Page 728

Enhanced Modular Input/Output Subsystem (eMIOS)
MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 17-49
Figure 17-35 shows the unified channel running in OPFWM mode with next period update PFWM mode.
In both figures EDPOL = 1, so the output is low during the duty cycle.
Figure 17-35. OPWFM with Next Period Update
A1 value
1
B1 value
B2 value
2
0x001000
0x000900
Output
flip-flop
A1 match A1 match
Time
0x000000
B1 match
0x0002000x000200
0x001000
0x000900
0x000200
Write to
A2 and B2
0x000200 0x000200
Write to
B2
0x001000
MODE[6] = 1
B1 match A1 match B1 match
0xxxxxxx
0x001000
0x001000 0x000900 0x000900
Notes:
1
Writing EMIOS_An writes to A2.
2
Writing EMIOS_Bn writes to B2.
A2 value transferred to A1 according to OUn bit.
B2 value transferred to B1 according to OUn bit.
EMIOS_CCNTR