Fixed Function vs UDB

[MuKa_284621]

Hello,

       

I was going thru the TRM and I didn't find much explanation on fixed-function blocks.

       

After going thru several chapters, I concluded that fixed-function blocks are a separate set of programmable logic (not sure if it is "programmable" since it only has a fixed function) than the UDB.

       

So I'm asking the gurus of PSoC (5LP to be precise), is this true?

[ETRO_SSN583]

Yes some fixed function blocks have limited programmability, just substantially less

   

flexibility, HW and SW, then UDB equivalent.

       

Regards, Dana.

[MuKa_284621]

 Thanks for the clarification.

       

So if I'm correct, if I disable the UDB, then this fixed-function block should theoretically still function, shouldn't it?

[ETRO_SSN583]

Yes, fixed function blocks for a specific chip are additional HW outside UDB array

   

available for use.

       

Regards, Dana.

[HeLi_263931]

Yes, they are independent. Disabling an UDB component will not diable the fixed function counterpart.