HW-SPAR3-SK-UNI-G Xilinx Inc, HW-SPAR3-SK-UNI-G Datasheet - Page 31

• Manufacturer Part Number: HW-SPAR3-SK-UNI-G
• Description: KIT STARTER SPARTAN-3
• Manufacturer: Xilinx Inc
• Series: Spartan-3r
• Type: FPGA Configurationr

Specifications of HW-SPAR3-SK-UNI-G

• Contents: Board, Cable, Software, Datasheets and User Manual
• For Use With/related Products: Spartan-3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 122-1521

Voltage Supply
Voltage Supply
Spartan-3 FPGA Starter Kit Board User Guide
UG130 (v1.2) June 20, 2008
an overflow occurs. If the mouse moves continuously, the 33-bit transmissions repeat
every 50 ms or so.
The L and R fields in the status byte indicate Left and Right button presses. A ‘1’ indicates
that the associated mouse button is being pressed.
The following site contains additional information on interfacing to a PS/2-style mouse:
•
Most modern keyboards and mice work equally well from a 3.3V or 5V supply. The voltage
supply for the PS/2 port is selectable via the JP2 jumper, indicated as
located immediately above the PS/2 connector along the right edge. The 3.3V setting is
preferred as the FPGA’s output signals operate from the 3.3V supply. The JP2 jumper
should be positioned as shown in
Table 6-5: PS/2 Port Supply Voltage Options
Some older keyboards and mice are 5V only. Consequently, the JP2 jumper should be set
for 5V operation as shown in
the 270Ω series resistors on the PS/2 data and clock signals connected to the FPGA. See the
schematic in
The PS/2 Mouse Interface
http://www.computer-engineering.org/index.php?title=PS/2_Mouse_Interface
Supply Voltage
(DEFAULT)
PS/2 Port
3.3V
5V
Figure A-7
for more details.
www.xilinx.com
Jumper JP2
Table
Setting
JP2
Table 6-5
JP2
6-5. The Spartan-3 FPGA can tolerate 5V signals due to
by default.
30
in
Figure
1-2,
31
R