GPS RADIONOVA® RF Antenna Module
Part No. M20048-1
Antennas for Wireless M2M Applications
10
Product Specification GPS RADIONOVA M20048-1-PS-1.0
Host Baud Rate/Protocol Selection
The module’s default baud rate is user configurable at start-up with a hardware configuration.
This is limited to the values in the following table.
The baud rate and output protocol can be changed dynamically after start-up using the relevant commands.
Please contact Antenova for more information about protocol messages.
Hardware Baud Rate Selection Table
NC = Not connected. Leave floating
PD = Pull down resistor to GND (10K Ω)
Host Interface
UART Interface
The UART converts bytes of data to and from asynchronous start-stop bit streams as binary electrical
impulses.
The port contains a 16-byte FIFO, and 256 bytes of URAM. The bit rates are
selectable from 4800, 9600,
38400 and 115200 bps.
The IO level from the UART port are CMOS compatible, however for RS232 compatibility the use
of external
level shifters will be required. The hardware configuration of the port baud can be
changed dynamically by the
use of commands. These will be active and saved as long as the
VBACKP supply is applied.
Power Supply
The M20048-1 uses two DC supply inputs. VBCKUP to power the RAM and RTC sections of the
receiver, and
VCC to power the digital and processing sections. VBCKUP is to be applied all the time
to keep these sections alive.
VCC can be removed to initiate a backup power save mode (See page
10). VBCKUP can be removed if a battery is
also used at VBCKUP to maintain this supply. The
supply is internally regulated for 2.8V meaning the external supply
is versatile for a range of voltage
levels.
TM (1PPS)
TM is a one pulse per second output from the receiver providing uses for timing purposes. The
pulse width is 100ms.