Freescale Semiconductor, Inc.
Pulse Width Modulator
PCKB2 – PCKB0 — Prescaler for Clock B
Clock B is one of two clock sources which may be used for channels
2 and 3. These three bits determine the rate of clock B, as shown in
Table 13-1.
Table 13-1. Clock A and Clock B Prescaler
PCKA2 PCKA1 PCKA0
Value of
(PCKB2) (PCKB1) (PCKB0) Clock A (B)
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
P
P ÷ 2
P ÷ 4
P ÷ 8
P ÷ 16
P ÷ 32
P ÷ 64
P ÷ 128
Bit 7
PCLK3
0
6
PCLK2
0
5
PCLK1
0
4
3
2
PPOL2
0
1
PPOL1
0
Bit 0
PPOL0
0
PCLK0
0
PPOL3
0
RESET:
PWPOL — PWM Clock Select and Polarity
$0041
Read and write anytime.
PCLK3 — PWM Channel 3 Clock Select
0 = Clock B is the clock source for channel 3.
1 = Clock S1 is the clock source for channel 3.
PCLK2 — PWM Channel 2 Clock Select
0 = Clock B is the clock source for channel 2.
1 = Clock S1 is the clock source for channel 2.
PCLK1 — PWM Channel 1 Clock Select
0 = Clock A is the clock source for channel 1.
1 = Clock S0 is the clock source for channel 1.
Advance Information
186
68HC(9)12D60 — Rev 4.0
MOTOROLA
Pulse Width Modulator
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA [ MOTOROLA ]
