XS40 BOARD V1.4 USER MANUAL
8
Testing Your XS40 Board
Once your XS40 Board is installed and the jumpers are in their default configuration, you
can test the board using the GUI-based GXSTEST utility as follows.
You start GXSTEST by clicking on the
icon placed on the desktop during the
XSTOOLS installation. This brings up the window shown below.
Next you select the parallel port that your XS40 Board is connected to from the Port
pulldown list. GXSTEST starts with parallel port LPT1 as the default, but you can also
select LPT2 or LPT3 depending upon the configuration of your PC.
After selecting the parallel port, you select the type of XS40 Board you are testing from the
Board Type pulldown list. Then click on the TEST button to start the testing procedure.
GXSTEST will configure the FPGA to perform a test procedure on your XS40 Board.
After several seconds you will see a
O
O
O
O
displayed on the LED digit if the test completes
successfully. Otherwise an
E
E
E
E
will be displayed if the test fails. A status window will also
appear on your PC screen informing you of the success or failure of the test.
If your XS40 Board fails the test, you will be shown a checklist of common causes for
failure. If none of these causes applies to your situation, then test the XS40 Board using
another PC. In our experience, 99.9% of all problems are due to the parallel port. If you
cannot get your board to pass the test even after taking these steps, then contact XESS
Corp for further assistance.
Programming Your XS40 Board Clock Oscillator
The XS40/XSP Board has a 100 MHz programmable oscillator (a Dallas Semiconductor
DS1075Z-100). The 100 MHz master frequency can be divided by factors of 1, 2, ... up to
2052 to get clock frequencies of 100 MHz, 50 MHz, ... down to 48.7 KHz, respectively.
The divided frequency is sent to the rest of the XS40/XSP Board circuitry as a clock signal.
The divisor is stored in non-volatile memory in the oscillator chip so it will resume
operation at its programmed frequency whenever power is applied to the XS40/XSP
Board. You can store a particular divisor into the oscillator chip by using the GUI-based
GXSSETCLK utility as follows.
Summary of Contents for XStend XS40
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