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): 86/164頁
文件大?。?/td> 1148K
代理商: CTMRM
MOTOROLA
8-16
CTM
REFERENCE
DOUBLE ACTION SUBMODULE (DASM)
For More Information On This Product,
Go to: www.freescale.com
8
IN — Input pin status bit
In the DIS, IPWM, IPM and IC modes, this read-only status bit reflects the logic level on the input
pin.
In the OCB, OCAB and OPWM modes, reading this bit returns the value latched on the output
flip-flop, after EDPOL polarity selection.
Writing to this bit has no effect.
FORCA — Force A bit
In the OCB, OCAB and OPWM modes, the FORCA bit allows the software to force the output
flip-flop to behave as if a successful comparison had occurred on channel A (except that the FLAG
bit is not set). Writing a one to FORCA sets the output flip-flop; writing a zero to it has no effect.
In the DIS, IPWM, IPM and IC modes, the FORCA bit is not used and writing to it has no effect.
FORCA is cleared by reset and always reads as zero.
Note:
Writing a one to both FORCA and FORCB simultaneously resets the output flip-flop.
FORCB — Force B bit
In the OCB, OCAB and OPWM modes, the FORCB bit allows the software to force the output
flip-flop to behave as if a successful comparison had occurred on channel B (except that the FLAG
bit is not set). Writing a one to FORCB resets the output flip-flop; writing a zero to it has no effect.
In the DIS, IPWM, IPM and IC modes, the FORCB bit is not used and writing to it has no effect.
FORCB is cleared by reset and always reads as zero.
Note:
Writing a one to both FORCA and FORCB simultaneously resets the output flip-flop.
EDPOL — Edge polarity bit
In the DIS mode, this bit is not used; reading it returns the last value written.
In the IPWM mode, this bit is used to select the capture edge sensitivity of channels A and B.
1 (set)
Channel A captures on a falling edge.
Channel B captures on a rising edge.
0 (clear) –
Channel A captures on a rising edge.
Channel B captures on a falling edge.
In the IPM and IC modes, the EDPOL bit is used to select the input capture edge sensitivity of
channel A.
F
.
Freescale Semiconductor, Inc.
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