ORG4572-R01-TR2 datasheet(27/40 Pages) ETC

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Multi Spider - ORG4572 Datasheet

Revision 3.0

November 23, 2014

17.6. SMART SENSORS INTERFACE

MEMS sensors connected to an auxiliary I²C bus provide support for contextual awareness.

I²C bus comprises of 2 pads – GPIO1 and GPIO2, both are pseudo open-drain therefore requiring

external pull-up resistors.

FIGURE 10 – SMART SENSORS INTERFACE

ORG4572 acts as I²C Master and sensor devices function in Slave mode at speed of 400kbps.

This provides a very low latency data pipe for the critical sensor data so that it can be used in the

Navigation Library and Kalman filter to enhance navigation performance.

MEMS algorithms perform a sensor data fusion with GNSS signal measurements.

GNSS measurements can be used to calibrate MEMS sensors during periods of satellite navigation.

MEMS sensors can augment GNSS measurements, making those more accurate under degraded

satellite signal conditions and challenging dynamics.

MEMS data can be output to other subsystems in the platform over host serial interface.

17.7. FLASH MEMORY INTERFACE

Flash memory connected to an auxiliary SPI bus provides storage support for smart data logger,

system aiding data and firmware patch updates.

SPI bus comprises of 4 pads – GPIO1, GPIO2, GPIO3 and GPIO4.

ORG4572 acts as SPI Master while SPI flash memory functions in Slave mode.

ORG4572 supports 4Mbit and 8Mbit SPI flash memory ICs from specified manufacturers.

17.7.1. DATA LOGGER SUPPORT

ORG4572 can log data waypoints to SPI flash memory autonomously or under host control.

Features of data logger include:

Ability to log based on time interval and/or when distance or speed thresholds are exceeded.

Control over logging continuously or until available memory is full.

Control over which data is logged, including time, position, altitude, speed and accuracy.

Access to status information on how much memory remains.

Commands to clear memory and download data.

17.7.2. AIDING DATA STORAGE SUPPORT

ORG4572 can store CGEE™ and SGEE™ aiding data to SPI flash memory:

4Mbit memory supports up to 7 days of SGEE™ for GPS and GLONASS satellites.

8Mbit memory supports up to 31 days of SGEE™ for GPS and 14 days for GLONASS.

17.7.3. PATCH UPDATE SUPPORT

Patch updates may be provided from time to time to address ROM firmware issues as a method

of performance improvement.

Host controller is managing load and application of patch updates.

Patch files may be up to 128KB in size.

ORG4572-R01-TR2 Folha de dados(PDF) 27 Page - List of Unclassifed Manufacturers