Datasheet

76/99 DocID026899 Rev 7

9.74 INT_DUR2 (5Ah)

Tap recognition function setting register (r/w).

9.75 WAKE_UP_THS (5Bh)

Single and double-tap function threshold register (r/w).

Table 179. Threshold for D4D/D6D function

SIXD_THS[1:0] Threshold value

00 80 degrees

01 70 degrees

10 60 degrees

11 50 degrees

Table 180. INT_DUR2 register

DUR3 DUR2 DUR1 DUR0 QUIET1 QUIET0 SHOCK1 SHOCK0

Table 181. INT_DUR2 register description

DUR[3:0]

Duration of maximum time gap for double tap recognition. Default: 0000

When double tap recognition is enabled, this register expresses the maximum time

between two consecutive detected taps to determine a double tap event. The

default value of these bits is 0000b which corresponds to 16*ODR_XL time. If the

DUR[3:0] bits are set to a different value, 1LSB corresponds to 32*ODR_XL time.

QUIET[1:0]

Expected quiet time after a tap detection. Default value: 00

Quiet time is the time after the first detected tap in which there must not be any

overthreshold event. The default value of these bits is 00b which corresponds to

2*ODR_XL time. If the QUIET[1:0] bits are set to a different value, 1LSB

corresponds to 4*ODR_XL time.

SHOCK[1:0]

Maximum duration of overthreshold event. Default value: 00

Maximum duration is the maximum time of an overthreshold signal detection to be

recognized as a tap event. The default value of these bits is 00b which corresponds

to 4*ODR_XL time. If the SHOCK[1:0] bits are set to a different value, 1LSB

corresponds to 8*ODR_XL time.

Table 182. WAKE_UP_THS register

SINGLE_

DOUBLE

_TAP

INACTIVITY WK_THS5 WK_THS4 WK_THS3 WK_THS2 WK_THS1 WK_THS0