BMC150 datasheet(69/141 Pages) ETC2

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Datasheet

eCompass BMC150

Page 69

Confidential

BST-BMC150-DS000-03 | Revision 0.4 | February 2013

Bosch Sensortec

third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.

Note: Specifications within this document are subject to change without notice. Not intended for publication.

The register contains the most-significant bits of the Y-channel acceleration readout value.

When reading out Y-channel acceleration values, data consistency is guaranteed if the

ACCD_Y_LSB is read out before the ACCD_Y_MSB and shadow_dis=’0’. In this case, after the

ACCD_Y_LSB has been read, the value in the ACCD_Y_MSB register is locked until the

ACCD_Y_MSB has been read. This condition is inherently fulfilled if a burst-mode read access

is performed. Acceleration data may be read from register ACCD_Y_MSB at any time except

during power-up and in DEEP_SUSPEND mode.

Name

0x05

ACCD_Y_MSB

Bit

Read/Write

Reset

Value

n/a

Content

acc_y_msb<11:8>

Bit

Read/Write

Reset

Value

n/a

Content

acc_y_msb<7:4>

acc_y_msb<11:4>: Most significant 8 bits of acceleration readback value (two’s-complement

format)

The register contains the least-significant bits of the Z-channel acceleration readout value.

When reading out Z-channel acceleration values, data consistency is guaranteed if the

ACCD_Z_LSB is read out before the ACCD_Z_MSB and shadow_dis=’0’. In this case, after the

ACCD_Z_LSB has been read, the value in the ACCD_Z_MSB register is locked until the

ACCD_Z_MSB has been read. This condition is inherently fulfilled if a burst-mode read access

is performed. Acceleration data may be read from register ACCD_Z_LSB at any time except

during power-up and in DEEP_SUSPEND mode.

Name

0x06

ACCD_Z_LSB

Bit

Read/Write

Reset

Value

n/a

Content

acc_z_lsb<3:0>

Bit

Read/Write

Reset

Value

n/a

Content

undefined

‘0’

new_data_z

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