Datasheet

Chapter 11 Pulse Width Modulator with Fault Protection (PMF15B6C) Module
MC9S12E256 Data Sheet, Rev. 1.10
Freescale Semiconductor 347
Read and write anytime.
11.3.2.16 PMF Value 2 Register (PMFVAL2)
Read and write anytime.
11.3.2.17 PMF Value 3 Register (PMFVAL3)
Read and write anytime.
Table 11-20. PMFVAL1 Field Descriptions
Field Description
15–0
PMFVAL1
PMF Value 1 Bits — The 16-bit signed value in this buffered register is the pulse width in PWM1 clock period.
A value less than or equal to zero deactivates the PWM output for the entire PWM period. A value greater than,
or equal to the modulus, activates the PWM output for the entire PWM period. SeeTable 11-37. The terms
activate and deactivate refer to the high and low logic states of the PWM output.
Note: PMFVAL1 is buffered. The value written does not take effect until the LDOK bit is set and the next PWM
load cycle begins. Reading PMFVAL1 reads the value in the buffer and not necessarily the value the PWM
generator is currently using.
Address: $0014
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
PMFVAL2
W
Reset 0 0 0 0 0 0 0 0 0 0000000
Figure 11-22. PMF Value 2 Register (PMFVAL2)
Table 11-21. PMFVAL2 Field Descriptions
Field Description
15–0
PMFVAL2
PMF Value 2 Bits — The 16-bit signed value in this buffered register is the pulse width in PWM2 clock period.
A value less than or equal to zero deactivates the PWM output for the entire PWM period. A value greater than,
or equal to the modulus, activates the PWM output for the entire PWM period. See Table 11-37. The terms
activate and deactivate refer to the high and low logic states of the PWM output.
Note: PMFVAL2 is buffered. The value written does not take effect until the LDOK bit is set and the next PWM
load cycle begins. Reading PMFVAL2 reads the value in the buffer and not necessarily the value the PWM
generator is currently using.
Address: $0016
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
PMFVAL3
W
Reset 0 0 0 0 0 0 0 0 0 0000000
Figure 11-23. PMF Value 3 Register (PMFVAL3)