MC9S12E128CFUE Datasheet, PDF (332/606 Pages) Freescale Semiconductor, Inc – MC9S12E128 Data Sheet

Chapter 11 Pulse Width Modulator with Fault Protection (PMF15B6CV2)
11.3.2.2 PMF Configure 1 Register (PMFCFG1)
Module Base + 0x0001
R
W
Reset
7
ENHA
0
6
5
4
3
2
1
0
0
BOTNEGC TOPNEGC BOTNEGB TOPNEGB BOTNEGA TOPNEGA
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 11-5. PMF Configure 1 Register (PMFCFG1)
Read anytime. This register cannot be modified after the WP bit is set.
A normal PWM output or positive polarity means that the PWM channel outputs high when the counter
value is smaller than or equal to the pulse width value and outputs low otherwise. An inverted output or
negative polarity means that the PWM channel outputs low when the counter value is smaller than or equal
to the pulse width value and outputs high otherwise.
Table 11-3. PMFCFG1 Field Descriptions
Field
Description
7
ENHA
Enable Hardware Acceleration — This bit enables writing to the VLMODE[1:0], SWAPC, SWAPB, and SWAPA
bits in the PMFCFG3 register. This bit cannot be modified after the WP bit is set.
0 Disable writing to VLMODE[1:0], SWAPC, SWAPB, and SWAPA bits
1 Enable writing to VLMODE[1:0], SWAPC, SWAPB, and SWAPA bits
5
BOTNEGC
Pair C Bottom-side PWM Polarity — This bit determines the polarity for Pair C bottom-side PWM (PWM5). This
bit cannot be modified after the WP bit is set.
0 Positive PWM5 polarity
1 Negative PWM5 polarity
4
TOPNEGC
Pair C Top-side PWM Polarity — This bit determines the polarity for Pair C top-side PWM (PWM4). This bit
cannot be modified after the WP bit is set.
0 Positive PWM4 polarity
1 Negative PWM4 polarity
3
BOTNEGB
Pair B Bottom-side PWM Polarity — This bit determines the polarity for Pair B bottom-side PWM (PWM3). This
bit cannot be modified after the WP bit is set.
0 Positive PWM3 polarity
1 Negative PWM3 polarity
2
TOPNEGB
Pair B Top-side PWM Polarity — This bit determines the polarity for Pair B top-side PWM (PWM2). This bit
cannot be modified after the WP bit is set.
0 Positive PWM2 polarity
1 Negative PWM2 polarity
1
BOTNEGA
Pair A Bottom-side PWM Polarity — This bit determines the polarity for Pair A bottom-side PWM (PWM1). This
bit cannot be modified after the WP bit is set.
0 Positive PWM1 polarity
1 Negative PWM1 polarity
0
TOPNEGA
Pair A Top-side PWM Polarity — This bit determines the polarity for Pair A top-side PWM (PWM0). This bit
cannot be modified after the WP bit is set.
0 Positive PWM0 polarity
1 Negative PWM0 polarity
MC9S12E128 Data Sheet, Rev. 1.07
332
Freescale Semiconductor