PNI SENtral User Manual
Sentral, Motion coprocessor
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, 3–axis accelerometer,
and 3–axis 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
Document Outline
- 1 Product Overview
- 2 SENtral Specifications1
- 3 Layout
- 4 I2C Interface
- 5 Operation
- 6 SENtral Configuration Tool
- 7 Package Information
- 8 Assembly Guidelines
- Appendix I – Configuration File Image Format
- Appendix II – Converting Quaternions
- Appendix III – Parameter Transfer
- Appendix IV – Sample Schematic Set