NXP Semiconductors MPC5566 - Page 735

Enhanced Modular Input/Output Subsystem (eMIOS)
MPC5566 Microcontroller Reference Manual, Rev. 2
17-56 Freescale Semiconductor
Figure 17-38 and Figure 17-39 show the unified channel running in OPWM with immediate update and
next period update, respectively.
Figure 17-38. Output PWM with Immediate Update
Figure 17-39 show the unified channel running in OPWM with immediate update and next period update,
respectively.
Figure 17-39. Output PWM with Next Period Update
A1 value
1
B1 value
B2 value
2
0x001000
Output
flip-flop
Time
0x000000
B1 match
0x0009000x000900
0xFFFFFF
0x001000
0x000900
Update to
A1
0xxxxxxx 0x000200
Update to
A1
0x001000
Selected
MODE[6] = 0
counter bus
A1 match B1 match
0xxxxxxx
0xxxxxxx
0x001000
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.
0x000200
Write to
B2
A1
match
0x001000
A1 value
1
B1 value
B2 value
2
0x001000
Output
flip-flop
Time
0x000000
B1 match
0x000200
0xFFFFFF
0x001000
0x000900
0x000200
0x000900
Selected
MODE[6] = 1
counter bus
A1 match B1 match
0xxxxxxx 0x001000
Notes:
1
Writing EMIOS_An writes to A2.
2
Writing EMIOS_Bn writes to B2.
0x000200
Write to
B2
0x001000
Write to
A1 and B2
A1
match
0x000900
0x000900
A2 value transferred to A1 according to OUn bit.
B2 value transferred to B1 according to OUn bit.