mc9s12xs128 Freescale Semiconductor, Inc, mc9s12xs128 Datasheet - Page 375

• Manufacturer Part Number: mc9s12xs128
• Description: Hcs12 Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

13.3.2.5
The PWMCAE register contains eight control bits for the selection of center aligned outputs or left aligned
outputs for each PWM channel. If the CAEx bit is set to a one, the corresponding PWM output will be
center aligned. If the CAEx bit is cleared, the corresponding PWM output will be left aligned. See
Section 13.4.2.5, “Left Aligned Outputs”
detailed description of the PWM output modes.
Read: Anytime
Write: Anytime
13.3.2.6
The PWMCTL register provides for various control of the PWM module.
Read: Anytime
Write: Anytime
There are three control bits for concatenation, each of which is used to concatenate a pair of PWM
channels into one 16-bit channel. When channels 6 and 7are concatenated, channel 6 registers become the
high order bytes of the double byte channel. When channels 4 and 5 are concatenated, channel 4 registers
become the high order bytes of the double byte channel. When channels 2 and 3 are concatenated, channel
Freescale Semiconductor
Module Base + 0x0004
Module Base + 0x0005
CAE[7:0]
Reset
Reset
Field
7–0
W
W
R
R
CON67
CAE7
Center Aligned Output Modes on Channels 7–0
0 Channels 7–0 operate in left aligned output mode.
1 Channels 7–0 operate in center aligned output mode.
PWM Center Align Enable Register (PWMCAE)
PWM Control Register (PWMCTL)
0
0
7
7
Write these bits only when the corresponding channel is disabled.
= Unimplemented or Reserved
CON45
Figure 13-7. PWM Center Align Enable Register (PWMCAE)
CAE6
0
0
6
6
Figure 13-8. PWM Control Register (PWMCTL)
Table 13-7. PWMCAE Field Descriptions
S12XS Family Reference Manual, Rev. 1.10
CON23
CAE5
0
0
5
5
and
Section 13.4.2.6, “Center Aligned Outputs”
CON01
CAE4
NOTE
0
0
4
4
Description
PSWAI
CAE3
0
0
3
3
Pulse-Width Modulator (S12PWM8B8CV1)
CAE2
PFRZ
0
0
2
2
CAE1
0
0
0
1
1
for a more
CAE0
0
0
0
0
0
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