XESS XStend XS40, Manual

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The XS40 and XS95 Boards offer a flexible, low-cost method of prototyping FPGA and
CPLD designs. However, their small physical size limits the amount of support circuitry
they can hold. The XStend Board removes this limitation by providing additional support
circuitry that the XS40 and XS95 Boards can access through their breadboard interfaces.
The XStend Board contains resources that extend the range of applications of the XS
Boards into three areas:
n
The pushbuttons, DIP switches, LEDs, and prototyping area are useful for basic lab
experiments. These features in combination with the XS Boards replicate the
functionality of the older HW/UW FPGABOARD.
n
The VGA monitor interface, PS/2 keyboard/mouse interface, and static RAM let the
XS Boards be used in video and computing experiments.
n
The stereo codec and dual-channel analog input/output circuitry are useful for
processing of audio signals in combination with DSP circuits synthesized with
XILINX's CORE generation software.
XStend Board Features
The XStend Board extends the capabilities of the XS40 and XS95 Boards by providing:
n mounting sockets for both an XS40 and an XS95 Board;
n additional bargraph LED and LED digits;
n pushbutton and DIP switches;
n an interface to VGA monitors;
n an interface to a PS/2-style keyboard or mouse;
n an additional 64 Kbytes of static RAM (optional);
n a stereo codec with left/right input and output channels.
n an interface to the XILINX Xchecker cable;
n a 2.75"×3.5" prototyping area with selectable 3.3V or 5V supply;
Chapter
2
XStend Overview