LSM303CTR datasheet(37/53 Pages) STMICROELECTRONICS

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LSM303C

8.9

CTRL_REG6_A (25h)

Accelerometer control register 6 (r/w)

8.10

CTRL_REG7_A (26h)

Accelerometer control register 7 (r/w)

Table 38. CTRL_REG7_A register

8.11

STATUS_REG_A (27h)

Accelerometer status register (r/w)

Table 40. STATUS_REG_A register

Table 36. CTRL_REG6_A register

BOOT

-------

Table 37. CTRL_REG6_A register description

BOOT

Force reboot, cleared as soon as the reboot is finished. Active high.

Default value 0.

DCRM2

DCRM1

LIR2

LIR1

4D_IG2

4D_IG1

Table 39. CTRL_REG7_A register description

DCRM [2:1]

DCRM is used to select the reset mode of the duration counter. Default value 0.

If DCRM = ‘0’, the counter is reset when the interrupt is no longer active, else if

DCRM = ‘1’, the duration counter is decremented. 1 LSB

LIR [2:1]

Latched Interrupt [2:1] Default value:0

(0: interrupt request not latched; 1: interrupt request latched)

Cleared by reading IG_SRC[2:1]_A register

4D_IG [2:1]

Interrupt [2:1] 4D option enabled. Default value 0.

When set, interrupt generator [2:1] uses 4D for position recognition.

ZYXOR

ZOR

YOR

XOR

ZYXDA

ZDA

YDA

XDA

Table 41. STATUS_REG_A register description

ZYXOR X, Y and Z-axis data overrun. Default value: 0

(0: no overrun has occurred; 1: a new set of data has overwritten the previous data)

ZOR

Z-axis data overrun. Default value: 0

(0: no overrun has occurred; 1: a new set of data for the Z-axis has overwritten the previ-

ous data)

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