FXLS93421 datasheet(62/254 Pages) NXP

62 / 254 page

NXP Semiconductors

FXLS9xxxx

Dual channel inertial sensor

In SPI and I2C mode, the PDCMFORMAT bits are readable and writable, but have no

impact on device operation or performance.

11.2.13.3 Source identification (SOURCEID_x)

In SPI mode, the SOURCEID field in the SPI command is compared against the values

in the SOURCEID_x registers. If the SOURCEID field matches one of the values in the

SOURCEID_x registers and the SIDx_EN bit is set for that register, the sensor data

for that SOURCEID is transmitted as shown in Table 92. If more than one enabled

SOURCEID_x register value matches the SOURCEID field in the SPI command a SPI

sensor data request error response is transmitted. If no enabled SOURCEID_X register

value matches the SOURCEID field in the SPI command a SPI sensor data request error

response is transmitted.

Source ID

Source ID enable (SIDx_EN) Transmitted data

SPI Error Response

SOURCEID_0

CH0_SNSDATA0

SPI Error Response

SOURCEID_1

CH0_SNSDATA1

SPI Error Response

SOURCEID_2

CH1_SNSDATA0

SPI Error Response

SOURCEID_3

CH1_SNSDATA1

Table 92. SPI source identification (SOURCEID_x)

In DSI3 mode, if the SIDx_EN bit in the SOURCEID_x register is set, the associated

SOURCEID value is transmitted in the SOURCEID field of PDCM mode using the

associated transmission time shown in Table 93.

Source ID

Source ID enable

(SIDx_EN)

Transmission time[1]

Transmitted data[2]

SOURCEID_0

PDCM_RSPST0

CH0_SNSDATA0

SOURCEID_1

PDCM_RSPST1

CH0_SNSDATA1

SOURCEID_2

PDCM_RSPST2

CH1_SNSDATA0

SOURCEID_3

PDCM_RSPST3

CH1_SNSDATA1

Table 93. DSI3 source identification (SOURCEID_x)

[1]

See Section 11.2.18.1 "Periodic data collection mode response start time (PDCM_RSPSTx[12:0])"

[2]

See Section 11.2.25.2 "Channel data type 0 selection bits (CHxDATATYPE0)" and See Section 11.2.25.3 "Channel data

type 1 selection bits (CHxDATATYPE1)"

In PSI5 mode, the SOURCEID_x register SIDx_EN bit values control data transmissions

as shown in Table 94. The SOURCEID_x bits have no effect in PSI5 mode.

FXLS9xxxx

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Product data sheet

Rev. 6 — 8 February 2021

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