ST STM32F101xx User Manual

General-purpose timers (TIM9 to TIM14) RM0008
448/1096 Doc ID 13902 Rev 12
16.6.6 TIM10/11/13/14 capture/compare enable register
(TIMx_CCER)
Address offset: 0x20
Reset value: 0x0000
Note: The state of the external I/O pins connected to the standard OCx channels depends on the
OCx channel state and the GPIO registers.
1514131211109876543210
Reserved
CC1NP
Res.
CC1P CC1E
rw rw rw
Bits 15:4 Reserved, always read as 0.
Bit 3 CC1NP: Capture/Compare 1 complementary output Polarity.
CC1 channel configured as output: CC1NP must be kept cleared.
CC1 channel configured as input: CC1NP bit is used in conjunction with CC1P to define
TI1FP1 polarity (refer to CC1P description).
Bit 2 Reserved, always read as 0.
Bit 1 CC1P: Capture/Compare 1 output Polarity.
CC1 channel configured as output:
0: OC1 active high
1: OC1 active low
CC1 channel configured as input:
The CC1P bit selects TI1FP1 and TI2FP1 polarity for trigger or capture operations.
00 : noninverted/rising edge : circuit is sensitive to TI1FP1 rising edge (capture mode),
TI1FP1 is not inverted.
01 : inverted/falling edge : circuit is sensitive to TI1FP1 falling edge (capture mode), TI1FP1
is inverted.
10 : reserved, do not use this configuration.
11: noninverted/both edges : circuit is sensitive to both TI1FP1 rising and falling edges
(capture mode), TI1FP1 is not inverted.
Bit 0 CC1E: Capture/Compare 1 output enable.
CC1 channel configured as output:
0: Off - OC1 is not active
1: On - OC1 signal is output on the corresponding output pin
CC1 channel configured as input:
This bit determines if a capture of the counter value can actually be done into the input
capture/compare register 1 (TIMx_CCR1) or not.
0: Capture disabled
1: Capture enabled
Table 92. Output control bit for standard OCx channels
CCxE bit OCx output state
0 Output Disabled (OCx=’0’, OCx_EN=’0’)
1 OCx=OCxREF + Polarity, OCx_EN=’1’

ST STM32F101xx Specifications

General

Brand	ST
Model	STM32F101xx
Category	Microcontrollers
Language	English