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PSoC 4

befic_2639911
New Contributor II

Hi,

   smartIO has 8 LUTs. It can be configured as combinatorial with an output mapping,which is the truth table value.

   Can the output mapping be writed as an expression of input ,like its funtion?

   For example,the following picture,using an expression with right side operators or functions instead of figure 0x7f.

   how to do it?

lut.png

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1 Solution
BragadeeshV
Moderator
Moderator

Hi beyows_2639911​,

This may not be possible. You need to frame a truth table to come up with an output mapping. Could you please let us know the difficulty you're facing with the function?

Regards,

Bragadeesh

Regards,
Bragadeesh

View solution in original post

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3 Replies
BragadeeshV
Moderator
Moderator

Hi beyows_2639911​,

This may not be possible. You need to frame a truth table to come up with an output mapping. Could you please let us know the difficulty you're facing with the function?

Regards,

Bragadeesh

Regards,
Bragadeesh

View solution in original post

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befic_2639911
New Contributor II

Hi,Bragadeesh.

     the LUT is 3-inputs. in fact a 3-input truth table  is not complex for the combinatorial  logic.

    users hope it would be easy to achieve combinatorial  logic by an expression just as a programmble chip does.

     we can see something from LUT configuration window. it seems that there is  an easy way to do logic function with listed expression,operators ,etc,in the window.

      why does not  cypress supply this function?

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BragadeeshV
Moderator
Moderator

Hi beyows_2639911​,

We will consider your request and will file an enhancement request based on the same. Thank you for your interest in cypress products.

Regards,

Bragadeesh

Regards,
Bragadeesh
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