mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 226

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

FlexTimer Module (FTMV1)
11.3.19 FTM Input Capture Filter Control Register (FTMxFILTERm)
This read/write register selects the filter value for the inputs of channels (n) and (n+1).
The FTMxFILTER0 register selects the filter value for the inputs of channels 0 and 1; the FTMxFILTER1
register selects the filter value for the inputs of channels 2 and 3. Channels 4 and 5 do not have an input
filter.
11-26
Reset
Reset
W
W
R
R
FAULTIN
FAULTF
WPEN
Field
7
6
5
FAULTF
0
0
0
7
7
Fault detection flag. The FAULTF bit is set when fault control is enabled and a fault condition is detected.
Clear FAULTF by reading the FTMxFMS register while FAULTF is set and then writing a logic 0 to
FAULTF. If another fault condition is detected before the clearing sequence is complete, the sequence
is reset so FAULTF remains set after the clearing sequence is completed for the earlier fault condition.
Reset clears FAULTF. Writing a logic 1 to FAULTF has no effect.
0 No fault condition was detected
1 A fault condition was detected.
Write protection enable. When write protection is enabled (WPEN = 1), write protected bits can not be
written. When write protection is disabled (WPEN = 0), write protected bits can be written. The WPEN
bit is the negation of the WPDIS bit. WPEN is set when 1 is written to it. WPEN is cleared when WPEN
bit is read as a logic 1 and then 1 is written to WPDIS. Write 0 to WPEN has no effect.
0 Write protection is disabled.
1 Write protection is enabled.
Fault input. The FAULTIN bit is the value of the fault input after the fault filter when fault control is
enabled. Reset clears FAULTIN. Writing a logic 0 or a logic 1 to FAULTIN has no effect.
0 The value of the fault input is logic 0.
1 The value of the fault input is logic 1.
Figure 11-22. FTM Input Capture Filter Control Register (FTMxFILTERm)
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
= Unimplemented or Reserved
= Unimplemented or Reserved
WPEN
Figure 11-21. FTM Fault Mode Status Register (FTMxFMS)
0
0
6
6
CH(n+1)FVAL
Table 11-20. FTMxFMS Field Descriptions
FAULTIN
5
0
5
0
0
0
0
4
4
Description
0
0
0
3
3
0
0
0
2
2
CH(n)FVAL
Freescale Semiconductor
1
0
0
1
0
0
0
0
0
0