MC3410 Datasheet, PDF (68/75 Pages) NXP Semiconductors – 10-Bit high-speed multiplying D/A converter

MC3410 3-Axis Accelerometer
Datasheet
11.26 TAP_TH: TAP THRESHOLD REGISTER
The threshold value, TAP_TH[7:0] is an 8-bit unsigned number that species the threshold
detection level for all tap events. This value is not an offset, but a magnitude which determines
the minimum level for a valid tap event. The detector is implemented as a 2^nd-order high pass
filter. As such, the units are the 2^nd derivative of acceleration, also known as ‘snap’. The full
range is 0 to 12 snap. The resolution is ~47 milliSnap/bit. See also Section 9.6 Tap Detection.
Addr Name
Description
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
POR R/
Value W
0x32
TAP_TH
Tap Threshold
Register
Unsigned value
0x00 W
TAP_TH[7:0]
0x00
Description (~47 mSnap/LSB)
Tap threshold is 0 snap
0x80
Tap threshold is 6 snap
0xFF
Tap threshold is 12 snap
Table 41. TAP_TH Tap Threshold Register Settings
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