mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 806

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Memory Map and Register Definition
37.3.3 Status and Control (FTMx_SC)
SC contains the overflow status flag and control bits used to configure the interrupt
enable, FTM configuration, clock source, and prescaler factor. These controls relate to all
channels within this module.
Addresses: FTM0_SC is FFFF_8440h base + 0h offset = FFFF_8440h
806
FFFF_84AA Channels Polarity (FTM1_POL)
FFFF_84AB Fault Mode Status (FTM1_FMS)
FFFF_84AC Input Capture Filter Control (FTM1_FILTER0)
FFFF_84AD Input Capture Filter Control (FTM1_FILTER1)
FFFF_84AE Fault Input Filter Control (FTM1_FLTFILTER)
FFFF_84AF Fault Input Control (FTM1_FLTCTRL)
FFFF_84B0
Absolute
address
(hex)
Reset
Field
TOF
Read
Write
7
Bit
FTM1_SC is FFFF_8480h base + 0h offset = FFFF_8480h
Reserved
TOF
Timer Overflow Flag
Set by hardware when the FTM counter passes the value in the Counter Modulo registers. The TOF bit is
cleared by reading the SC register while TOF is set and then writing a 0 to TOF bit. Writing a 1 to TOF
has no effect.
If another FTM overflow occurs between the read and write operations, the write operation has no effect;
therefore, TOF remains set indicating an overflow has occurred. In this case a TOF interrupt request is
not lost due to the clearing sequence for a previous TOF.
0
1
7
0
0
FTM counter has not overflowed.
FTM counter has overflowed.
TOIE
0
6
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Register name
FTMx memory map (continued)
FTMx_SC field descriptions
CPWMS
Table continues on the next page...
0
5
Preliminary
0
4
Description
CLKS
0
3
(in bits)
Width
8
8
8
8
8
8
8
Access
R/W
R/W
R/W
R/W
R/W
R/W
0
2
Freescale Semiconductor, Inc.
Reset value
R/W
00h
00h
00h
00h
00h
00h
PS
0
1
00h
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37.3.21/
37.3.22/
37.3.23/
37.3.23/
37.3.24/
37.3.25/
37.3.26/
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