AN2960 datasheet(23/41 Pages) STMICROELECTRONICS

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AN2960

Data and status registers

Doc ID 15557 Rev 1

23/41

Data and status registers

7.1

WHO_AM_I (0Fh)

Device identification register.

This register contains a device identifier which, for the LIS331DL, is set to 3Bh.

7.2

STATUS_REG (27h)

Data output status register.

ZYXOR is set to one whenever new acceleration data is produced before completing the

retrieval of the previous set. When this occurs, the content of at least one acceleration data

acceleration data (OUTX, OUTY, OUTZ) of all the active channels are read.

111

ZYXOR

ZOR

YOR

XOR

ZYXDA

ZDA

YDA

XDA

ZYXOR

X, Y and Z axes data overrun. Default value: 0

(0: no overrun has occurred;

1: new data has overwritten the previous data before it was read)

ZOR

Z-axis data overrun. Default value: 0

(0: no overrun has occurred;

1: new data for the Z-axis has overwritten the previous data)

YOR

Y-axis data overrun. Default value: 0

(0: no overrun has occurred;

1: new data for the Y-axis has overwritten the previous data)

XOR

X-axis data overrun. Default value: 0

(0: no overrun has occurred;

1: new data for the X-axis has overwritten the previous data)

ZYXDA

X, Y and Z-axis new data available. Default value: 0

(0: a new set of data is not yet available; 1: a new set of data is available)

ZDA

Z-axis new data available. Default value: 0

(0: new data for the Z-axis is not yet available;

1: new data for the Z-axis is available)

YDA

Y-axis new data available. Default value: 0

(0: new data for the Y-axis is not yet available;

1: new data for the Y-axis is available)

XDA

X-axis new data available. Default value: 0

(0: new data for the X-axis is not yet available;

1: new data for the X-axis is available)

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