GPS M
ODULE
E
VALUATION
B
OARD
Jumper Settings
The Pin Headers provide access to the GPS modules pins.
Pin 1 of each of the pin headers connects through to the
GPS module as indicated in the table below. Pin 2 of each
pin header is connected to ground.
Please refer to the Data Interface section on page 4 of
datasheet DS031 for information on the functionality of
these pins.
Jumper
Link
ON_OFF
B_R
PPS
RST
STY
SBY
ALM
GPS Pin
ON/OFF
BAUD RATE
PPS
RESET
STY1
Standby
ALMRDY
Link
Open
ON
9600
N/A
-
-
-
N/A
Link
Closed
OFF
4800
N/A
RESET
STY1
Standby
N/A
I/O
Input
Input
Output
Input
Input
Input
Output
Power Connections
Power can be supplied to the board at either 3.3Vdc or 4-
9Vdc via the 3V3 or JP1 pin headers respectively.
Data Connections
Data access is provided at either RS232 or TTL voltage
levels.
•
The 9-way D-Type connector provides data transfer at
RS232 voltage levels. It may be connected directly to a
COM port of a PC.
•
The COMMS pin header provides direct access to the
GPS module 3.3V data lines.
COMMS_1 = GPS Data Transmit
COMMS_2 = GPS Data Recieve
In this case the RS232 Driver chip can be disabled by
removing R3 and R9.
Status LEDs
LED1 (the green LED) illuminates to indicate that a valid almanac is available.
LED2 (the red LED) flashes to indicate that no GPS information is available.
LED2 remains off if GPS information is available.
PCB Dimensions:
85.5mm x 33.5mm
Other Information
For a detailed description of the GPS Module please see the following documents:
GPS Datasheet:
DS031
GPS Programmers Guide:
DS032
Software Information
The following software may be used to operate on a PC in conjunction with the evaluation board:
Microsoft Autoroute
•
This produces a complete Satellite navigation system. The GPS information is utilised to plot your position
on a map of your current location.
DS033-3 July 2004
©2004 Reg. No. 227 4001, England
Page
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