參數資料
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: 84/164頁
文件大?。?/td> 1148K
代理商: CTMRM
MOTOROLA
8-14
CTM
REFERENCE
DOUBLE ACTION SUBMODULE (DASM)
For More Information On This Product,
Go to: www.freescale.com
8
8.6.1
DASMSIC — DASM status/interrupt/control register
FLAG — Flag status bit
This status bit indicates whether or not an input capture or output compare event has occurred. If
the IL field is non-zero, an interrupt request is generated when the FLAG bit is set.
1 (set)
An input capture or output compare event has occurred.
0 (clear) –
An input capture or output compare event has not occurred.
In the DIS mode, the FLAG bit is cleared.
In the IPWM mode, the FLAG bit is set each time there is a capture on
channel A.
In the IPM mode, the FLAG bit is set each time there is a capture on channel
A, except for the first time.
In the IC mode, the FLAG bit is set each time there is a capture on channel A.
In the OCB mode (i.e. when MODE0 = 0), the FLAG bit is only set each time
there is a successful comparison on channel B. In the OCAB mode (i.e.
when MODE0 = 1), the FLAG bit is set each time there is a successful
comparison on either channel A or B.
In the OPWM mode, the FLAG bit is set whenever there is a successful
comparison on channel A.
This flag bit is set only by the hardware and is cleared only by the software or by a system reset.
The software can clear the FLAG bit either by writing a zero to it, having first read the bit as a one,
or by selecting the DIS mode.
To clear the flag, the software must first read the bit (as ‘one’) then write a ‘zero’ to the bit.
Note:
The flag clearing mechanism will work only if no flag setting event occurs between the
read and write operations; if a FLAG setting event occurs between the read and write
operations, the FLAG bit will not be cleared.
(1) Offset fromthe base address of the DASMsubmodule.
Bit:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DASMSIC
$00
(1)
FLAG
IL2
IL1
IL0
IARB3
WOR
BSL
IN
FORCA FORCB EDPOL MODE3 MODE2 MODE1 MODE0
Reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
F
.
Freescale Semiconductor, Inc.
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