Nexus 93180 programs routes in Pivot Tiles /TRIE and TCAM.
 
If the protocol route cannot be accommodated in any pivot tile, its added to TCAM.
TCAM serves as a scratchpad/temporary storage.  As more and more routes get added to TCAM, if the free space in the TCAM falls below a threshold one of the following two things happen:
a. If Dynamic Pivot tile[s] exist, check is done to find prefix-length(say m) that has max number of routes in TCAM and is trie capable.
Because of hash collisions, some routes in this set might end up in the TCAM itself.