Pni SENtral Manuel d'utilisateur

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SENtral
Motion Coprocessor
General Description
The SENtral
Motion Coprocessor is a
custom integrated circuit that makes it easy
to quickly incorporate, optimize and operate
multiple motion sensors on mobile
consumer electronics devices. SENtral
employs and manages a user-specified
3-axis magnetometer, 3axis accelerometer,
and 3axis gyroscope to provide reliable
motion tracking, and accurate heading and
orientation data. SENtral gathers data from
the individual sensors, then integrates and
fuses this data using PNI’s proprietary
Kalman filtering and heuristic algorithms.
By offloading the sensor fusion and
interface from a dedicated sensor hub MCU
or the host CPU to SENtral, overall power
requirements are dramatically lowered and
processing power is opened up for other
uses.
These advantages make SENtral the ideal
choice for mobile and consumer electronics
devices desiring ultra-lower power
consumption and best-in-class sensor fusion.
Features
Heading Accuracy of 2° rms.
Ultra Low Power Consumption
Continuous Soft and Hard-Iron
Magnetic Auto-Calibration
Magnetic Anomaly
Compensation
I
2
C Interface 100 to 3400 kHz
Small Form-Factor
Sensor Flexibility
Applications
Cell Phones
Tablets
Ultrabooks
TV Remote Controls
Video Game Controllers
Ordering Information
Item
Part #
Quantity
Package
SENtral
13658P
<4000
Cut-Tape
SENtral
13658
4000
Tape & Reel
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Résumé du contenu

Page 1 - Motion Coprocessor

SENtral Motion Coprocessor General Description The SENtral Motion Coprocessor is a custom integrated circuit that makes it easy to quickly

Page 2 - Table of Contents

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 9 3.2 Pin Assignments SENtral’s pin-out is a 4x4 ball-grid array, a

Page 3 - List of Tables

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 10 3.3 Sensor Layout SENtral provides for considerable flexibility

Page 4 - 1 Product Overview

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 11 Table 3-2: Recommended Power Line Distance from Magnetometer Cur

Page 5

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 12 4 I2C Interface Communication with the host processor and senso

Page 6

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 13 Table 4-1: I2C Timing Parameters Standard Fast Fast Plus Units

Page 7 - 2 SENtral Specifications

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 14 Data transfer is always initiated by the host. Data is

Page 8

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 15 4.3 I2C Sensor Interface (Sensor Bus) SENtral communicates with

Page 9 - 3 Layout

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 16 5 Operation Figure 5-1 provides a flow chart of the initializat

Page 10 - 3.2 Pin Assignments

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 17 Prior to running SENtral, the Configuration File must be uploaded

Page 11 - 3.3 Sensor Layout

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 18 to change the Configuration File depending on the sensors. As pr

Page 12

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 1 Table of Contents 1 PRODUCT OVERVIEW ...

Page 13 - C Interface

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 19 5.1.2 Configuration File Upload from Host If an EEPROM is not

Page 14 - C Host Interface (Host Bus)

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 20 Table 5-3: Sample Host Upload Data Order Byte Order in Config Fi

Page 15

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 21 Perform the following:  Set the sensor output data rates (ODRs)

Page 16 - C Pull-Up Resistance

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 22  Write 0x07 to the EnableEvents register. This sets up the hos

Page 17 - 5 Operation

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 23 Table 5-5: Normal Operation Registers Register Name Address Regi

Page 18

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 24 5.3.2 CPUReset SENtral will report a CPUReset event after the Re

Page 19

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 25 5.4 Standby State In Standby State overall system power consumpt

Page 20

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 26 Uses for the Pass-Through State include:  Direct control of sen

Page 21 - 5.2 Initial Register Set-Up

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 27 5.6 Troubleshooting This section provides guidance in troub

Page 22

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 28 If the SensorStatus register indicates a non-zero value, then th

Page 23

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 2 List of Figures Figure 1-1: SENtral Block Diagram ...

Page 24

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 29 Configuration Tool, as discussed in Section 6, and then

Page 25

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 30 6 SENtral Configuration Tool Before using the SENtral Motion Cop

Page 26 - 5.5 Pass-Through State

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 31 6.1 Configuration Tool General Settings 6.1.1 SDK Revision This

Page 27

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 32 technical data sheet and normally will be a function of 5 or 6 fi

Page 28 - 5.6 Troubleshooting

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 33 The final example is west-south-down (WSD). This matrix would be

Page 29

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 34 7 Package Information Note: For Pin-Out, see Table 3-1 Figure

Page 30

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 35 Figure 7-2: Tape Dimensions

Page 31

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 36 8 Assembly Guidelines SENtral is provided in a lead-free wafer-

Page 32

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 37 Figure 8-1 provides design parameters for a typical SENtral solde

Page 33 - Examples:

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 38 Figure 8-2: Typical Solder Reflow Profile Table 8-1: Typical

Page 34

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 3 1 Product Overview The SENtral Motion Coprocessor is an integrat

Page 35 - 7 Package Information

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 39 Appendix I – Configuration File Image Format Table A1-1 provide

Page 36 - Figure 7-2: Tape Dimensions

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 40 Table A1-2: Configuration File Data Structure Byte Index Conten

Page 37 - 8 Assembly Guidelines

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 41 Appendix II – Converting Quaternions SENtral outputs orientation

Page 38

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 42 Rotation Vector The rotation vector is the first three elements o

Page 39 - Parameter

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 43 Appendix III – Parameter Transfer Note: Implementing the paramet

Page 40

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 44 The parameter transfer process is invoked and terminated

Page 41

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 45 transaction. AFTER the first parameter is written, the

Page 42 - Heading, Pitch, and Roll

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 46 Now the host can read the RetrieveParamByte registers to obtain t

Page 43 - Rotation Vector

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 47 parameters associated with SENtral’s continuous background calibr

Page 44

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 48 Table A3-3: DriverID & AlgorithmID Definition Parameter Numb

Page 45

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 4 1.2 SENtral Functional Description Figure 1-1 provides a diagram

Page 46

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 49 Appendix IV – Sample Schematic Set The schematics provided are fo

Page 47 - WarmStart

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 50

Page 48 - DriverID and AlgorithmID

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 51

Page 49

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 52

Page 50

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 53 ©2013 PNI Sensor Corporation. All Rights Reserved. Reproduction

Page 51

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 5  Magnetic Anomaly Determination establishes if a transient magne

Page 52

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 6 2 SENtral Specifications1 2.1 Performance Characteristics Table

Page 53

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 7 Table 2-3: Operating Conditions Parameter Symbol Min Typical Max

Page 54

PNI Sensor Corporation Doc #1018049 R03 SENtral Technical Data Sheet Page 8 3 Layout 3.1 System Layout Figure 3-1 provides a basic reference

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