ML505/ML506/ML507 Evaluation Platform
www.xilinx.com
21
UG347 (v3.1.1) October 7, 2009
Detailed Description
R
7. User and Error LEDs (Active-High)
There are a total of 15 active-High LEDs directly controllable by the FPGA:
•
Eight green LEDs are general purpose LEDs arranged in a row
•
Five green LEDs are positioned next to the North-East-South-West-Center-oriented
pushbuttons (only the
center
one is cited in
Figure 1-2, page 15
)
•
Two red LEDs are intended to be used for signaling error conditions, such as bus
errors, but can be used for any other purpose
Some LEDs are buffered through the CPLD to allow the LED signals to be used as higher-
performance I/O by way of the XGI expansion connector.
Table 1-6
summarizes the LED
definitions and connections.
Table 1-6:
User and Error LED Connections
Reference
Designator
Label/Definition
Color
FPGA Pin
Buffered
DS20
LED North
Green
AF13
Yes
DS21
LED East
Green
AG23
Yes
DS22
LED South
Green
AG12
Yes
DS23
LED West
Green
AF23
Yes
DS24
LED Center
Green
E8
Yes
DS17
GPIO LED 0
Green
H18
Yes
DS16
GPIO LED 1
Green
L18
Yes
DS15
GPIO LED 2
Green
G15
Yes
DS14
GPIO LED 3
Green
AD26
No
DS13
GPIO LED 4
Green
G16
Yes
DS12
GPIO LED 5
Green
AD25
No
DS11
GPIO LED 6
Green
AD24
No
DS10
GPIO LED 7
Green
AE24
No
DS6
Error 1
Red
F6
No
DS6
Error 2
Red
T10
No
electronic components distributor