set_clock_tree_options -insert_boundary_cell 中的boundary_cell

ywlloo

哪位大神知道set_clock_tree_options -insert_boundary_cell 中的boundary_cell是什么，在做tree时什么时候需要插入呢？谢谢！

yahemao123

When you are working on a block-level design, you might want to preserve the boundary
conditions of the block’s clock ports (the boundary clock pins). A boundary cell is a fixed
buffer that is inserted immediately after the boundary clock pins to preserve the boundary
conditions of the clock pin.

icfbicfb

clk从port进来的第一个buffer

ywlloo

Thanks all, and i want to know what's the boundary conditions,drive strength or others? The boundary is the physical boundary or logical boundary of the block? Thanks again!

ywlloo

   

When you are working on a block-level design, you might want to preserve the boundary
conditions of ...
yahemao123 发表于 2014-10-15 10:49

                               
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   Thanks all, and i want to know what's the boundary conditions, driving strength or others? What is the boundary,physical or logical of the block-level design? Thanks again!

hrtdfg

回复 3# icfbicfb


   用了这个命令，作用是啥？自己插上ISO buffer吗？