Microbee Systems MBS-GPS-SS2-5HZ Instrukcja Użytkownika Pobierz pdf (Strona 4)

OEMV-1 3.3V GPS.

Once the unit is conﬁgured and installed it is treated as three 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 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 except on the EXT Se-

rial Port.

The interface supports baud rates up to a maximum of 921,600 Baud. However, the Novatel

SSII only supports maximum rates of 19,200. Operation with 16 byte FIFO’s is satisfactory at

this rate. However, the user can enable FIFO’s up to 128 bytes deep. This means that instead

of an interrupt generated every 15 characters one could be generated only once per message

greatly reducing overhead on the host processor to handle interrupt servicing.

The unit incorporates the 16 bit PC/104 ISA connector so 16 bit devices can be placed on the

stack after the radio. Also interrupts 10, 11, 14 and 15 are accessed thru this connector. The

MBS-GPS-SS2-5HZ, being an 8 BIT interface, does not require a 16 bit ISA card be prior to the

radio unless operation requires IRQ 10, 11, 12, 14 or 15.

For more information on the PC-104 ISA bus please refer to the PC-104 speciﬁcation at:

http://www.pc1 04.org/technology/PDF /PC1 04Specv246.pdf

Caution

The MBS-GPS contains static sensitive CMOS components. The greatest danger occurs when

the card is plugged into the PC/104 stack. The card becomes charged by the user and the

static discharges to the I/O bus from the pin closest to the card connector. If that pin happens

to be an input pin, even TTL inputs may be damaged. Follow sound ESD practices!!!!

To avoid damaging your card and its components:

Ground yourself before handling the MBS-GPS Module.

Disconnect power before removing or inserting the MBS-GPS Module.

OPERATING PRECAUTiONS + TECHNICAL SPECIFICATIONS

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Ordering Information

Part # MBS-GPS-SSII-5Hz with the Super Star 2 5 Hz OEM GPS.

Part # MBS-GPS-OEMV-1 with the Novatel OMEV-1 OEM GPS.

No REV # is required.

Baud Rate

The MBS-GPS is fully 16C850A compliant and supports software selectable baud rates up to

preliminary

REV B

1 2 3 4 5 6 7 8 9 ... 17 18

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