M10478 Datasheet, PDF (12/30 Pages) List of Unclassifed Manufacturers – GPS RADIONOVA® RF Antenna Module

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m2m
Host I²C Interface
GPS RADIONOVA^® RF Antenna Module
Part No. M10478
The GSD4e supports two-wire I²C operation in multi-master mode only, with behavior comparable to UART
mode operation.
• Address format is 7-bit (default) or 10-bit. I²C supports multiple masters and multiple slaves. The
GSD4e address as master (when sending) is 0x62 and as slave (when receiving) is 0x60
• Current I²C Data rates: bit clock rates are 400 kbps (default – fast mode) and 100 kbps (standard
mode). High speed mode is not supported. Data rate can be changed using OSP message ID 178
• Internal FIFOs for RX and TX are 64 bytes.
For proper operation, external pull-ups are required to ensure proper rise times with stray shunt capacitances
from attached loads and traces.
SPI and I²C Interface (Master Mode)
The M10478 provides an auxiliary serial interface that can be configured as either a master I²C interface or a
master SPI bus. These features are implemented using either 2 or 4 of the GPIO pins on M10478. Only one
of these buses may be implemented on a receiver.
At start-up, the receiver automatically detects either an I²C EEPROM or a SPI serial flash memory and sets
itself appropriately. If GSD4e WLCSP does not detect memory of either type, the system is configured for an
I²C bus for sensor interface.
Master I2C Interface
This mode is the default for the receiver. It can be used to communicate with MEMS sensors such as
accelerometers, Magneto-meters and altimeters, and with EEPROM storage devices. Some features of the
interface include:
• Support for most common sensor formats (accelerometers, gyros, magnetometers, altimeters)
• Support for multiple data lengths
• Standard I²C bus data rates of 100kbps and 400kbps
• Accepts both 64KB and 128KB EEPROMS
• 128KB EEPROMs can store server-generated EE files up to 7 days in length
Master SPI Interface
Non-volatile memory storage can be provided by either 2Mbit or 4Mbit serial flash memories from either
SST or EON. The flash memory can store a ROM patch, both server-generated and client-generated
extended ephemeris files (up to 31 days in length if 4MB or greater), satellite almanacs, crystal temperature
characterization data and data logs. All of these items can be stored simultaneously on the same flash device.
Through the master SPI interface, GSD4e WLCSP reads and writes data at approximately 1.0Mbps, with a
maximum of 1.25Mbps
Antennas for Wireless M2M Applications
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Product Specification 12MD-0050-2-PS