HW-SPAR3E-SK-US-G Xilinx Inc, HW-SPAR3E-SK-US-G Datasheet - Page 19

• Manufacturer Part Number: HW-SPAR3E-SK-US-G
• Description: KIT STARTER SPARTAN-3E
• Manufacturer: Xilinx Inc

Specifications of HW-SPAR3E-SK-US-G

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 122-1507

Discrete LEDs
Spartan-3E FPGA Starter Kit Board User Guide
UG230 (v1.2) January 20, 2011
A
B
Rotating RIGHT
UCF Location Constraints
Locations and Labels
R
Figure 2-8: Outputs from Rotary Shaft Encoder May Include Mechanical Chatter
direction! See the Rotary Encoder Interface reference design
example.
Figure 2-9
I/O pin assignment and the I/O standard used, and defines a pull-down resistor on each
input.
The Spartan-3E FPGA Starter Kit board has eight individual surface-mount LEDs located
above the slide switches as shown in
LED0. LED7 is the left-most LED, LED0 the right-most LED.
Rising edge on ‘A’ when ‘B’ is Low indicates RIGHT (clockwise) rotation
NET
NET
NET
"ROT_A"
"ROT_B"
"ROT_CENTER"
provides the UCF constraints for the four push-button switches, including the
Figure 2-9: UCF Constraints for Rotary Push-Button Switch
LOC
LOC
LOC
www.xilinx.com
Figure 2-10: Eight Discrete LEDs
= "K18" |
= "G18" |
= "V16" |
Figure
IOSTANDARD
IOSTANDARD
IOSTANDARD
2-10. The LEDs are labeled LED7 through
Switch closing chatter on ‘B’
injects false “clicks” to the LEFT
(’B’ rising edge when ‘A’ is Low)
UG230_c2_04_021206
= LVTTL |
= LVTTL |
= LVTTL |
in“Related Resources”
Switch opening chatter on ‘A’
injects false “clicks” to the RIGHT
PULLUP
PULLUP
PULLDOWN
Discrete LEDs
UG230_c2_07_030606
;
;
;
for an
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