M10478 Datasheet, PDF (11/30 Pages) List of Unclassifed Manufacturers – GPS RADIONOVA® RF Antenna Module

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m2m
Host SPI Interface (Slave)
GPS RADIONOVA^® RF Antenna Module
Part No. M10478
The host interface SPI is a slave mode SPI.
The 4 SPI pins are:
• Pin 13: slave SPI data output (MISO)
• Pin 12: slave SPI data input (MOSI)
• Pin 14: slave SPI clock input (CLK)
• Piin 16: slave SPI chip select (CS#) active low
The maximum clock frequency supported is 6.8MHz.
To allow the module to awaken or signal the host that messages are ready within the GSD4e, the GSD4e
software can be programmed or configured to generate a “Message Waiting” signal on a pre-assigned GPIO.
While the Host SPI serial Input and Host SPI clock Input are 3.3V compatible, if Host SPI serial Input is driven
from a source higher than 1.8V, excess leakage current may flow through the ~80kΩ internal pull-up resistor.
Host SPI serial Output has maximum 1.8V logic high output level and may require an external level shifter to
interface with a 3.3V input.
The following internal operation details are provided to assist with implentation troubleshooting:
• TX and RX each have independent 1024 byte FIFO buffers
• RX and TX each have independent software-specified two byte idle patterns
• TX FIFO is disabled when empty and transmits its idle pattern until re-enabled
• RX FIFO detects a software specific number of idle pattern repeats and then disables FIFO input until
the idle pattern is broken
• FIFO buffers can generate an interrupt at any fill level
• SPI detects synchronization errors and can be reset by software.
Antennas for Wireless M2M Applications
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Product Specification 12MD-0050-2-PS