3
2.2
Standard Module
The standard version of the GTT480272A allows for user configuration of two common communication
protocols. The unit can communicate using flow controlled serial protocol at either RS323 or TTL voltage
levels. Connections for each are accessed through the communication/power header as in Table 2.
2.2.1
Recommended Parts
Figure 3: Extended Communication/Power
Cable (ESCCPC5V)
The most common cable choice for the GTT480272A display, the
Extended Communication/ Power Cable, offers a simple connection to
the unit with familiar interfaces. A DB9 and floppy power header
provide all necessary input to drive your display.
Figure 4: Internal Communication/Power
Cable (ISCCPC5V)
For an internal PC interface to the GTT480272A, an Internal Serial
Communication/Power Cable can be used. In this case, internal serial
and floppy power headers provide the input to drive your display.
2.2.2
Serial Connections
The serial interface provides a classic connection to the GTT480272A. The Extended
Communication/Power Cable is most commonly used for this set up as it provides connections for DB9
serial and floppy power cables. To place your board in Serial mode, adhere to the steps below.
1.
Set the Protocol Select jumpers.
RS232: Connect the five jumpers in the 232
*
protocol box with the zero ohm jumper resistors
provided or an alternate wire or solder solution.
TTL: Connect the four jumpers in the TTL
*
protocol box.
*Note:
Jumpers must be removed from all protocol boxes save for the one in use.
2.
Make the connections.
a.
Connect the six pin female header of the Extended Communication/Power Cable to the
communication/power header of your GTT480272A.
b.
Insert the male end of your serial cable to the corresponding DB9 header of the Extended
Communication/Power Cable and the mate the female connector with the desired
communication port of your computer.
c.
Select an unmodified floppy cable from a PC power supply and connect it to the power header
of the Extended Communication/Power Cable.
3.
Create.
GTT Tools will serve to get you started, and then allow you to move on with your own
development. Instructions for this program can be found below and a variety of application
notes are linked in the Application Notes Section of this manual.
