FXLS93333 datasheet(169/254 Pages) NXP

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NXP Semiconductors

FXLS9xxxx

Dual channel inertial sensor

12.5 Initialization timing

aaa-030664

POR

tPOR_DSI

tSTART_DISC

tDSP_POR

offset

cancellation

normal

discovery

mode

read status registers

(DEVSTAT, DEVSTAT2)

initialize signal chain

initialize communication

self test

verification

enter

PDCM

command

user set up and self test control through CRM

offset cancellation low pass filter

startup

tOC_START

POR

internal

delay

periodic

data

collection

mode

Figure 80. Initialization timing

12.6 Maximum number of devices on a network

The theoretical maximum number of devices on a DSI3 network is 16: 1 master and

15 slaves. The practical limit for the number of devices on a bus is dependent on the

minimum common capability of the devices on the bus. The capability of the device

is different depending on the bus configuration and operating mode. The impact of

the device capability on the practical limit for the number of devices on the network is

described in this section.

12.6.1 Pre-configured, parallel connected network

The number of devices in a pre-configured, parallel connected network is not directly

limited by the capability of the device. The practical limit is determined by a combination

of the following:

• The capability of the master device, including, but not limited to:

– The bus operating voltage

– The bus supply current

– The bus current limit

– The bit rate

– The response current detection capability (distinguishing response current from

quiescent current)

• The total quiescent current of all slaves on the network.

12.6.2 Bus switch connected daisy chain network

The number of devices in a bus switch connected daisy chain network is not directly

limited by the capability of the device. The practical limit is determined by a combination

of the following:

FXLS9xxxx

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Product data sheet

Rev. 6 — 8 February 2021

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