RTD Embedded Technologies, Inc.
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18
GPS25162HR/GPS35162HR User’s Manual
BDM-610020158 Rev A
5
Functional Description
5.1
Block Diagram
The Figure below shows the functional block diagram of the GPS35162. The various parts of the block diagram are discussed in the following
sections.
Figure 7: GPS35162 Block Diagram
5.2
PCIe UART
The GPS35162 provides a UART interface to the PCIe bus that connects to a GPS and a serial connector CN7. There are four independent
UARTs that are connected as follows:
•
UART 1 to GPS
•
UART 2 is unused.
•
UART 3 to CN7
•
UART 4 is unused.
5.2.1
GPS
I
NTERFACE
Integrated on the GPS35162 is a Linx RXM-GNSS-TX, a low power fast-fix 33-channel GPS receiver. This GPS receiver is especially designed
for portable and mobile applications. The Linx RXM-GNSS-TM provides NMEA-0183 version 4.10 data and a 1 PPS signal.
A complete list of NMEA Messages and co
mmand messages is available from the manufacturer’s website at
PCIe
UART
PC
Ie
Bu
s
µP
GPS Module
CN5: GPS
Antenna
PCIe x1
GPS Fix LED
1PPS LED
CN7: Serial
CN4: Utility
