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FXLS93421 Datasheet(PDF) 157 Page - NXP Semiconductors

Part # FXLS93421
Description  Dual channel inertial sensor
PDF  254 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

FXLS93421 Datasheet(HTML) 157 Page - NXP Semiconductors

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NXP Semiconductors
FXLS9xxxx
Dual channel inertial sensor
Mode
Default polynomial
Non-direct seed
Command and Response Mode
x8 + x5 + x3 + x2 + x + 1
1111 1111
Table 230. Command and response mode response CRC
Some example CRC calculations are shown in Table 225.
12.3.3 DSI3 command and response mode timing
A timing diagram for command and response mode is shown in Figure 73. Timing
parameters are specified in Section 10.11.
aaa-030657
BUS_I
tPOR_DSI
HYST
VBUS_I_UV_F + V
tCMD_BitTime
Iq + 2 x IRESP
Iq + IRESP
Iq
32nd bit
1st bit
CMD_Start
response
current
tACT_RESP
tSTART_CRM
1st
symbol
8th
symbol
tCHIP_CRM
tPER_CRM
tSLEW1_RESP
tSLEW2_RESP
Figure 73. Command and response mode timing diagram
12.3.4 DSI3 command and response mode command summary
Command
Data
C3
C2
C1
C0
Hex
Description
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
$0
Register Read
RA[7]
RA[6]
RA[5]
RA[4]
RA[3]
RA[2]
RA[1] x
x
x
x
x
x
x
x
x
0
0
0
1
$1
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
0
1
0
$2
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
0
1
1
$3
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
1
0
0
$4
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
1
0
1
$5
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
1
1
0
$6
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
1
1
1
$7
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1
0
0
0
$8
Register Write
RA[7]
RA[6]
RA[5]
RA[4]
RA[3]
RA[2]
RA[1] RA[0] RD[7] RD[6] RD[5] RD[4] RD[3] RD[2] RD[1] RD[0]
1
0
0
1
$9
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1
0
1
0
$A
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1
0
1
1
$B
Enter PDCM
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1
1
0
0
$C
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1
1
0
1
$D
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1
1
1
0
$E
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1
1
1
1
$F
Reserved
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Table 231. DSI3 command and response mode command summary
12.3.4.1 Register read command
The device supports the Register Read command as a device address specific command
only. If the PA[3:0] field in the command matches the value in the PADDR[3:0] bits of
FXLS9xxxx
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
Product data sheet
Rev. 6 — 8 February 2021
157 / 254



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