FXLS93421 datasheet(164/254 Pages) NXP

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NXP Semiconductors

FXLS9xxxx

Dual channel inertial sensor

aaa-030659

Response

Current

Command

Block

BUS_I

slave A

command blocking time is independently

programmed in each slave.

slave B

slave C

tCmdBlock_ST_PDCM

PDCM_RSPST[12:0] on slave C device

tPER_PDCM

tCmdBlock_PDCM

tSTART_PDCM, PDCM_RSPST[12:0], slave A

tSTART_PDCM, PDCM_RSPST[12:0], slave B

Figure 75. Periodic data mode response transmission

12.4.2.1 Symbol encoding

The symbol encoding used for Periodic Data Collection Mode Responses is the same as

for Command and Response Mode responses, and described in Section 12.3.2.1.

12.4.2.2 Response message format

The Periodic Data Collection Mode response format is shown in Table 253 and

Table 254. Field sizes are defined by the PDCMFORMAT[2:0] bits in the SOURCEID_x

Source ID

Keep alive counter

Status

Sensor data

CRC

SOURCEID

KAC

CRC[7:0]

Table 253. Periodic data collection mode response format

• If enabled in the PDCMFORMAT[2:0] bits, the SOURCEID field includes the value

stored in the SOURCEID_x[3:0] bits of the SOURCEID_x register.

• If enabled in the PDCMFORMAT[2:0] bits, the Keep Alive Counter field is a 2-bit rolling

message counter that is independently incremented for each SOURCEID. The initial

value of the counter is '00'.

• If enabled, the status field is transmitted as listed in Table 254. See Section 12.7 for

details on exception handling.

• The Sensor Data field includes the sensor data as selected by the DATATYPEx bits for

the SOURCEID.

• The CRC field includes an 8-bit CRC as defined in Section 12.4.2.3.

Sensor data field value

s[3:0]

Description

DEVSTAT state

SUP_ER-R_DIS state

Error

priority

STATUS field size = 4

STATUS field size = 0

0 0 0 0 Normal Mode

N/A

Sensor Data

0 0 0 1 Normal Mode, User

Array Not Locked

(UF2 region has not

been locked)

N/A

Sensor Data

The Sensor Data Field Error Code is transmitted for

a minimum of one transmission

0 0 1 0 Self-test Incomplete or

Self-test Active or Self-

test Error Present

Bit set in

CHx_STAT:

ST_INCMPLT

or ST_ACTIVE

or ST_ERROR

N/A

Sensor Data

The Sensor Data Field Error Code is transmitted for

a minimum of one transmission

Table 254. Periodic data collection mode status field definition

FXLS9xxxx

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Product data sheet

Rev. 6 — 8 February 2021

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