FXLS93421 datasheet(204/254 Pages) NXP

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NXP Semiconductors

FXLS9xxxx

Dual channel inertial sensor

14.3.3 Sensor data request commands

The device supports standard sensor data request commands. The sensor data request

command format is described in Section 14.3.3.1. The response to a sensor data request

is shown in Section 14.3.3.2. The response is transmitted on the next SPI message

subject to the error handling conditions specified in Section 14.5. The sensor data

included in the response is the sensor data at the falling edge of SS_B for the Sensor

Data Request response.

14.3.3.1 Sensor data request command message format

MSB

LSB

Command

Fixed Bits: Must = 0x00000

8-bit CRC

C[3:0]

CRC[7:0]

Table 313. Sensor data request command message format

Bit field

Definition

C[0]

Sensor Data Request Command = '1'

C[3:1] = SOURCEID[2:0]

Source Identification code for the requested sensor data. See Section 11.2.13.

CRC[7:0]

CRC. See Section 14.4

Table 314. Sensor data request command message format description

14.3.3.2 Sensor data request response message format

MSB

LSB

Command C[0], [3:1]

Basic

Status

Sensor Data

Detail

Status

8-bit CRC

C[3] C[2] C[1] ST[1:0]

SD[11:0]

Optional SD

resolution

SF[1:0]

CRC[7:0]

Table 315. Sensor data request response message format

Bit field

Definition

C[0]

Sensor Data Request Command = '1'

C[3:1] = SOURCEID[2:0]

Source Identification code for the requested sensor data. See Section 11.2.13.

ST[1:0]

Basic Status. See Section 14.5.1

SD[11:0]

Sensor Data. See Section 11.6.4.9

Optional SD Resolution

Optional for 16-bit Sensor Data. See Section 11.6.4.9

SF[1:0]

Detailed Status. See Section 14.5.3

CRC[7:0]

CRC. See Section 14.4

Table 316. Sensor data request response message format description

14.3.4 Reserved commands

The device responds to reserved commands on the next SPI message subject to the

error handling conditions specified in Section 14.5.

FXLS9xxxx

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 6 — 8 February 2021

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