AN2335 datasheet(23/40 Pages) STMICROELECTRONICS

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AN2335

Data and status registers

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ZOR is set to 1 whenever a new acceleration sample related to the Z-axis is generated

before the retrieval of the previous sample. When this occurs the previous sample is

overwritten. ZOR is cleared anytime OUTZ register is read.

YOR is set to 1 whenever a new acceleration sample related to the Y-axis is generated

before the retrieval of the previous sample. When this occurs the previous sample is

overwritten. YOR is cleared anytime OUTY_H register is read.

XOR is set to 1 whenever a new acceleration sample related to the X-axis is generated

before the retrieval of the previous sample. When this occurs the previous sample is

overwritten. XOR is cleared anytime OUTX_H register is read.

The ZYXDA bit signals that a new sample for all the enabled channels is available. ZYXDA

is cleared when the acceleration data (OUTX, OUTY, OUTZ) of all the enabled channels are

read.

ZDA is set to 1 whenever a new acceleration sample related to the Z-axis is available. ZDA

is cleared anytime OUTZ register is read. In order to trigger, the ZDA bit requires the Z axis

to be enabled (bit Zen=1 inside CTRL_REG1).

YDA is set to 1 whenever a new acceleration sample related to the Y-axis is available. YDA

is cleared anytime OUTY register is read. In order to trigger, the YDA bit requires the Y axis

to be enabled (bit Yen=1 inside CTRL_REG1).

XDA is set to 1 whenever a new acceleration sample related to the X-axis is available. XDA

is cleared anytime OUTX register is read. In order to trigger, the XDA bit requires the X axis

to be enabled (bit Xen=1 inside CTRL_REG1).

7.3

OUTX (29h)

X-axis output register.

7.4

OUTY (2Bh)

Y-axis output register.

7.5

OUTZ (2Dh)

Z-axis output register.

XD7

XD6

XD5

XD4

XD3

XD2

XD1

XD0

YD7

YD6

YD5

YD4

YD3

YD2

YD1

YD0

ZD7

ZD6

ZD5

ZD4

ZD3

ZD2

ZD1

ZD0

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