FXLS8471Q Datasheet, PDF (28/75 Pages) Freescale Semiconductor, Inc – Linear Accelerometer

10 Registers by Functional Blocks
10.1 Device configuration
10.1.1 STATUS (0x00) register
Table 14. STATUS register
DR_STATUS or F_STATUS
0
0
0
0
0
0
0
0
Table 15. STATUS Description
Field
F_SETUP[f_mode] = 2’b00
F_SETUP[f_mode] > 2’b00
Description
register 0x00 → DR_STATUS
register 0x00 → F_STATUS
The STATUS register aliases allow for the contiguous burst read of both status and current acceleration sample/FIFO data using
the auto-increment addressing mechanism in both 8- and 14-bit modes.
10.1.2 DR_STATUS (0x00) register
Data-Ready Status when F_SETUP[f_mode] = 0x00
This STATUS register provides the acquisition status information on a per-sample basis, and reflects real-time updates to the
OUT_X, OUT_Y, and OUT_Z registers.
When the FIFO subsystem data output register driver is disabled (F_SETUP[f_mode] = 2’b00), this register indicates the real-
time status information of the accelerometer X, Y, and Z axes sample data.
Table 16. DR_STATUS register
zyxow
zow
yow
xow
zyxdr
zdr
ydr
xdr
0
0
0
0
0
0
0
0
Table 17. DR_STATUS description
Field
zyxow
zow
yow
xow
Description
zyxow is set to 1 whenever new data is acquired before completing the retrieval of the previous set. This event occurs when
the content of at least one acceleration data register (that is, OUT_X, OUT_Y, and OUT_Z) has been overwritten. zyxow is
cleared when the high-bytes of the acceleration data (OUT_X_MSB, OUT_Y_MSB, and OUT_Z_MSB) are read.
X, Y, Z-axis data overwrite.
0: No data overwrite has occurred
1: Previous X, Y, Z data was overwritten by new X, Y, Z data before it was completely read
zow is set to 1 whenever a new Z-axis acquisition is completed before the retrieval of the previous data. When this occurs the
previous data is overwritten. zow is cleared anytime OUT_Z_MSB register is read.
Z-axis data overwrite.
0: No data overwrite has occurred
1: Previous Z-axis data was overwritten by new Z-axis data before it was read
yow is set to 1 whenever a new Y-axis acquisition is completed before the retrieval of the previous data. When this occurs the
previous data is overwritten. yow is cleared anytime OUT_Y_MSB register is read.
Y-axis data overwrite.
0: No data overwrite has occurred
1: Previous Y-axis data was overwritten by new Y-axis data before it was read
xow is set to 1 whenever a new X-axis acquisition is completed before the retrieval of the previous data. When this occurs the
previous data is overwritten. xow is cleared anytime OUT_X_MSB register is read.
X-axis data overwrite.
0: No data overwrite has occurred
1: Previous X-axis data was overwritten by new X-axis data before it was read
FXLS8471Q
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Sensors
Freescale Semiconductor, Inc.