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AT32F413
Series Reference Manual
2022.06.27
Page 243
Rev 2.00
14.3.4.7 TMR1 and TMR8 channel mode register1 (TMRx_CM1)
The channel can be used in input (capture mode) or output (compare mode). The direction of a channel
is defined by the corresponding CxC bits. All the other bits of this register have different functons in input
and output modes. The CxOx describes its function in output mode when the channel is in output mode,
while the CxIx describes its function in output mode when the channel is in input mode. Attention must
be given to the fact that the same bit can have different functions in input mode and output mode.
Output compare mode:
Bit
Register
Reset value
Type
Description
Bit 15
C2OSEN
0x0
rw
Channel 2 output switch enable
Bit 14: 12
C2OCTRL
0x0
rw
Channel 2 output control
Bit 11
C2OBEN
0x0
rw
Channel 2 output buffer enable
Bit 10
C2OIEN
0x0
rw
Channel 2 output enable immediately
Bit 9: 8
C2C
0x0
rw
Channel 2 configuration
This field is used to define the direction of the channel 2
(input or output), and the selection of input pin when
C2EN=’0’:
00: Output
01: Input,
,
C2IN is mapped on C2IRAW
10: Input, C2IN is mapped on C1IRAW
11: Input, C2IN is mapped on STCI. This mode works only
when the internal trigger input is selected by STIS
register.
Bit 7
C1OSEN
0x0
rw
Channel 1 output switch enable
0: C1ORAW is not affected by EXT input.
1: Once a high level is detect on EXT input, clear
C1ORAW.
Bit 6: 4
C1OCTRL
0x0
rw
Channel 1 output control
This field defines the behavior of the original signal
C1ORAW.
000: Disconnected. C1ORAW is disconnected from
C1OUT;
001: C1ORAW is high when TMRx_CVAL=TMRx_C1DT
010: C1ORAW is low when TMRx_CVAL=TMRx_C1DT
011: Switch C1ORAW level when
TMRx_CVAL=TMRx_C1DT
100: C1ORAW is forced low
101: C1ORAW is forced high.
110: PWM mode A
-
OWCDIR=0, C1ORAW is high once
TMRx_C1DT>TMRx_CVAL, else low;
-
OWCDIR=1, C1ORAW is low once TMRx_ C1DT
<TMRx_CVAL, else high;
111: PWM mode B
-
OWCDIR=0, C1ORAW is low once TMRx_
C1DT >TMRx_CVAL, else high;
-
OWCDIR=1, C1ORAW is high once TMRx_ C1DT
<TMRx_CVAL, else low.
Note: In the configurations othern than
000’, the C1OUT
is connected to C1ORAW. The C1OUT output level is
not only subject to the changes of C1ORAW, but also
the output polarity set by CCTRL.
Bit 3
C1OBEN
0x0
rw
Channel 1 output buffer enable
0: Buffer function of TMRx_C1DT is disabled. The new
value written to the
TMRx_C1DT takes effect
immediately.