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3,796 Views
Registered: ‎05-08-2012

what inside LUT in CLB

hai to all,

     i just wanted to know the logic inside LUT in configurable logic block.please tell me 

Thanks in advance......

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Teacher
Teacher
3,795 Views
Registered: ‎08-14-2007

Re: what inside LUT in CLB

Hi,

haven't you searched this forum or comp.arch.fpga before?

 

This question has been asked often.

 

In short:

Logically you can see it as a ROM, the actual implemetation is more like a big MUX, in the end it's all transistors on the silicon.

See other threads for details.

 

Have a nice synthesis

  Eilert

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Teacher
Teacher
3,793 Views
Registered: ‎09-09-2010

Re: what inside LUT in CLB

Note also that the details vary between FPGA families.

------------------------------------------
"If it don't work in simulation, it won't work on the board."
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Explorer
Explorer
3,778 Views
Registered: ‎03-31-2011

Re: what inside LUT in CLB

just have a look on data sheet of any FPGA board
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Scholar
Scholar
3,738 Views
Registered: ‎02-27-2008

Re: what inside LUT in CLB

or....

 

Look up "look up tables"

 

Or, you could look up the Xilinx patent that started it all:

 

http://www.google.com/patents/US4706216

 

 

Austin Lesea
Principal Engineer
Xilinx San Jose
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