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Last updated:
21-09-09 |
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 | Try one (or
better all three) version of the 8-bit counter found
below
The purpose to demonstrate the difference between
CLEAR and RESET |
| One of the three
versions below will not produce the correct
functionality (my intention :) which one?
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| Be course the
Clock signal should be <Btn0> at kit - must you
"persuade" the ISE software to accept this
By the warning can you see that done with a protest
as well :-)
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| Design #1 |
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| Design #2 |
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Content of the
User Constrain File
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Read more about
BUFG/BUFGP in the documentations of the Spartan 3E family
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In order to
provide fast propagation of the clock-signals inside
the FPGA will have special fast connection-lines
(Clock highways)
The BUFG / BUFGP could be one way to enter such a
line. Another way could be to use one of the
dedicated Clock pins like B8.
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