mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 371

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

8.3.2.4
This register selects the prescale clock source for clocks A and B independently.
Read: Anytime
Write: Anytime
Freescale Semiconductor
Reset
PCLK7
PCLK6
PCLK5
PCLK4
PCLK3
PCLK2
PCLK1
PCLK0
Field
7
6
5
4
3
2
1
0
W
R
Pulse Width Channel 7 Clock Select
0 Clock B is the clock source for PWM channel 7.
1 Clock SB is the clock source for PWM channel 7.
Pulse Width Channel 6 Clock Select
0 Clock B is the clock source for PWM channel 6.
1 Clock SB is the clock source for PWM channel 6.
Pulse Width Channel 5 Clock Select
0 Clock A is the clock source for PWM channel 5.
1 Clock SA is the clock source for PWM channel 5.
Pulse Width Channel 4 Clock Select
0 Clock A is the clock source for PWM channel 4.
1 Clock SA is the clock source for PWM channel 4.
Pulse Width Channel 3 Clock Select
0 Clock B is the clock source for PWM channel 3.
1 Clock SB is the clock source for PWM channel 3.
Pulse Width Channel 2 Clock Select
0 Clock B is the clock source for PWM channel 2.
1 Clock SB is the clock source for PWM channel 2.
Pulse Width Channel 1 Clock Select
0 Clock A is the clock source for PWM channel 1.
1 Clock SA is the clock source for PWM channel 1.
Pulse Width Channel 0 Clock Select
0 Clock A is the clock source for PWM channel 0.
1 Clock SA is the clock source for PWM channel 0.
PWM Prescale Clock Select Register (PWMPRCLK)
0
0
7
Register bits PCLK0 to PCLK7 can be written anytime. If a clock select is
changed while a PWM signal is being generated, a truncated or stretched
pulse can occur during the transition.
= Unimplemented or Reserved
Figure 8-6. PWM Prescale Clock Select Register (PWMPRCLK)
PCKB2
0
6
Table 8-3. PWMCLK Field Descriptions
PCKB1
MC9S12XDP512 Data Sheet, Rev. 2.17
0
5
PCKB0
NOTE
0
4
Description
0
0
3
Chapter 8 Pulse-Width Modulator (S12PWM8B8CV1)
PCKA2
0
2
PCKA1
0
1
PCKA0
0
0
371