FXLS8964AF datasheet(82/98 Pages) NXP

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NXP Semiconductors

FXLS8964AF

3-Axis Low-g Accelerometer

FXLS8964AF

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Objective data sheet

Rev. 2 — 30 October 2020

82 / 98

SDCD_UTHS[11:0] to ensure that the SDCD circuit functions correctly and produces

meaningful results.

The scaling for this register is always the same as the selected FSR's sensitivity. See

Section 9.4 for the sensitivity values corresponding to each of the selectable FSRs.

Table 109. SDCD_LTHS_MSB register (address 34h) bit allocation

Bit

Name

—

SDCD_LTHS[11:8]

Reset (BT_MODE = GND)

Reset (BT_MODE = VDD)

Access

R/W

Table 110. SDCD_LTHS_MSB register (address 34h) bit description

Field

Description

3:0

SDCD_LTHS[11:8]

MSB (nibble) of the signed 12-bit 2's complement lower-threshold value

13.31.9 SDCD_UTHS_LSB register (address 35h)

Sensor Data Change Detection function 12-bit 2's complement upper-threshold

least-significant byte.

SDCD_UTHS[11:0] must always be set to a higher value than

SDCD_LTHS[11:0] to ensure that the SDCD circuit functions correctly and produces

meaningful results.

The scaling for this register is the same as the selected FSR sensitivity. See Section 9.4

for the sensitivity values corresponding to each of the selectable FSRs.

Table 111. SDCD_UTHS_LSB register (address 35h) bit allocation

Bit

Name

SDCD_UTHS[7:0]

Reset (BT_MODE = GND)

Reset (BT_MODE = VDD)

Access

R/W

Table 112. SDCD_UTHS_LSB register (address 35h) bit description

Field

Description

7:0

SDCD_UTHS[7:0]

LSB of the signed 12 bit 2's complement upper-threshold value

13.31.10 SDCD_UTHS_MSB register (address 36h)

Sensor Data Change Detection function 12-bit 2's complement upper-threshold most-

significant byte (nibble).

SDCD_UTHS[11:0] must always be set to a higher value than

SDCD_LTHS[11:0] to ensure that the SDCD circuit functions correctly and produces

meaningful results.

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