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PREFACE
This manual is a guide to the proper configuration, installation, and operation of your MBS-GPS-
SS2-5HZ Interface. For setup and operation of the Novatel SSII Manuals included with this
product. You can use your MBS-GPS-SS2-5HZ card in conjunction with other PC/104 expansion
cards, tailoring your system for a wide variety of applications.
TECHNICAL SUPPORT
MicroBee Systems is committed to supporting our products. For this reason all user manuals as
well as this manual are always available online in PDF format at http://www.microbee-
systems.com/user_manuals.htm. If you do not find this online then please inform us and we will
make it available immediately.
This unit has been tested with a number of operating systems including MSDOS, Linux, QNX,
Microsoft Windows 98, NT, 2000 and XP. Any operating systems supporting an ISA legacy
device should operate normally with this product. This unit defaults to 16C550 mode. Access to
advanced features are via register access and thus may require modification to existing drivers.
MicroBee Systems does not guarantee operation with unusual or custom “in house” operating
systems or serial IO libraries. We will help you all we can.
If you have a question about the MBS-GPS-SS2-5HZ card and cannot find the answer in this
manual, call Technical Support. They will be ready to give you the assistance you need.
• When you call, please have the following at hand:
• Your MBS-GPS-SS2-5HZ GPS Module Interface User’s Manuals
• A description of your problem.
The direct line to Technical Support is 256-426-2431.
OVERVIEW
The MBS-GPS-SS2-5HZ PC/104 GPS Module is a high performance dual 16C550/850 UART
PC/104 Bus Compliant 8 BIT interface based upon the Exar XR16C2850 Dual UART with user
selectable 128 Byte deep FIFO buffers and integrated with the Novatel Super Star II 5Hz GPS.
This interface supports two independent user selectable TTL and RS232 level 1 PPS GPS
software and hardware selectable outputs. Port 1 is used as the Primary Data/Command Port
and Port 2 is the Differential input when a RTCM compliant correction message is supplied.
This unit incorporates several unusual features. This unit uses either jumpers or UART Modem
Control Register (MCR) control signals to transfer serial I/O to either the internally mounted GPS
or the EXT serial I/O connector, J7. J7 is a RS-232 Level IO compatible and both Port 1 and Port
2 are routed to this connector as well as provisions for a 1PPS input and a Reset Line output.
This facilitates the use of this module with other serial devices or GPS units and switching from
the internal GPS to the EXT Serial Port is done by toggling the DTR bit of the Data Port MCR.
Once the unit is configured and installed it is treated as two standard serial ports on the PC/104
stack. As an example, if the Data Port is configured for an address of 0x3F8 and IRQ 4 then the
MBS-GPS-SS2-5HZ is utilized simply as COM 1. Default operation is 16C550 mode with 16 byte
FIFO’s. Wide FIFO enable is via software writes to special registers. Please refer to the
XR16C2850 UART datasheet. This unit does not support flow control.
The interface supports baud rates up to a maximum of 115,200 Baud. However, the Novatel SSII
only supports maximum rates of 19,200 depending upon model requested. Operation with 16
byte FIFO’s is satisfactory at this rate. However, the user can enable FIFO’s up to 128 bytes
(18 Seiten)
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