固定函数与UDB是独立的吗？

你好，
我要通过TRM，我没有发现很多关于固定功能块的解释。
经过几个章节，我得出结论，固定功能块是一组独立的可编程逻辑（不确定它是否是可编程的，因为它只有固定的功能）比UDB。
所以我问PSoC大师（5LP是精确的），这是真的吗？



     以下为原文
  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?