Hi, I hope all members are doing well.
I would like to ask a couple of of questions regarding look up tables.
1) how can we create 2-1 multiplexer using only 2 input look up tables?
2) can outputs of one set of look up tables be used to map SRAM bits of another look up table?
Any help is much appreciated.
I am trying to figure out that if an FPGA has only two input Look up tables available how would one use that FPGA's two input look up tables to implement 4 variable function?
How many inputs (total bits over the four values) and what size result?
A look-up table is, in essence, just a area of memory with the address range being the total number of input bits.
One with two 8-bit inputs needs 2^16 = 65536 bytes or words; 64K.
eg. If you wanted four, 5 bit inputs that is 2^20 possibilities or 1MByte of storage.
For single-bit inputs, which part of the article you link implies, then four LUTs all fed by the first two inputs and a four-way multiplexer controlled by the other two inputs to select the correct result combination.
I have gone through various sources... But I am not quite sure what it is. For example, I have three input variables: A, B and C. Now I have to use two 2-input LUTs such that their input lines are
I have gone through various sources... But I am not quite sure what it is.I want an and gate and the logical equivalent is two inputs feeding to one gate and for Y=AB' the logical equivalent is fee...
In modern SRAM based Field Programmable Gate Arrays, a Look-Up Table (LUT) is the principal constituent logic element which can realize every possible Boolean function. However, this flexibility of LUTs comes with a heavy area penalty. A part of this area overhead comes from the increased amount...