參數(shù)資料
型號: CTMRM
英文描述: Configurable Timer Module Reference Manual
中文描述: 配置定時器模塊參考手冊
文件頁數(shù): 51/164頁
文件大?。?/td> 1148K
代理商: CTMRM
CTM
REFERENCE
MOTOROLA
6-1
MODULUS COUNTER SUBMODULE (MCSM)
For More Information On This Product,
Go to: www.freescale.com
6
6
MODULUS COUNTER SUBMODULE
(MCSM)
6.1
MCSM description
The MCSM is a versatile timer submodule capable of performing complex counting and timing
functions, including modulus counting, in a wide range of applications. The MCSM may also be
configured as an event counter, allowing the overflow flag to be set after a predefined number of
events (internal clocks or external events), or as a variable time source for PWM generation. Note
that the MCSM can also operate as a free running counter; in this case it behaves exactly like an
FCSM. A block diagram of the MCSM is shown in Figure 6-1.
Figure 6-1
MCSM block diagram
16-bit up counter
IL2
IL1
IL0
IARB3
COF
Edge
detect
Time base buses
Clock input
pin CTMC
Interrupt
control
Clock
select
IN2
CLK1 CLK0
CLK2
Overflow
Bus
select
Control register bit
Control register bits
6 clocks (PCLKx) fromprescaler
Submodule bus
Modulus
control
Modulus register
Control register bits
EDGEN EDGEP
Edge
detect
Modulus load
input pin CTML
IN1
Control register bits
Write
both
DRVA DRVB
Control register bits
TBBA
TBBB
F
.
Freescale Semiconductor, Inc.
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