Freescale Semiconductor FRDM-FXS-MULTI 데이터 시트
The FIFO can be configured to operate in Circular Buffer mode or Stop mode,
depending on the settings made in the
depending on the settings made in the
register. The Circular Buffer
mode allows the FIFO to be filled with a new sample replacing the oldest sample in the
buffer. The most recent 32 samples will be stored in the buffer. This is useful in
situations where the processor is waiting for a specific interrupt to indicate that the data
must be flushed to analyze the event.
buffer. The most recent 32 samples will be stored in the buffer. This is useful in
situations where the processor is waiting for a specific interrupt to indicate that the data
must be flushed to analyze the event.
The FXAS21000 FIFO Buffer has a configurable watermark, allowing an interrupt to be
signaled to the processor after a configurable number of samples are stored in the buffer
(from 1 to 32).
signaled to the processor after a configurable number of samples are stored in the buffer
(from 1 to 32).
5.2 Rate Threshold Detection Function
The embedded rate detection function can be used to detect an angular rate event that
exceeds a programmed threshold on any one of the enabled axes for longer than the
programmed debounce time and to trigger an interrupt signal. The function is fully
programmable, offering flexibility for the various potential use cases.
exceeds a programmed threshold on any one of the enabled axes for longer than the
programmed debounce time and to trigger an interrupt signal. The function is fully
programmable, offering flexibility for the various potential use cases.
Sign
|x|
Data
RT_THS
DBCNTM
RT_COUNT
ELE
>
CNT
>
LATCH
RT
RT_Pol
Output data rate (Hz)
Counter clock period (ms)
Event duration range
200
5
0 – 1.275
100
10
0 – 2.55
50
20
0 – 5.1
25
40
0 – 10.2
12.5
80
0 – 20.4
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Functionality
22
Xtrinsic 3-Axis Digital Angular Rate Gyroscope, Rev1.2, 7/2014.
Freescale Semiconductor, Inc.