Calculating Avg Circuit Fan-in

A

abhishektyagi

Newbie level 5
Joined
Apr 17, 2023
Messages
9
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
121
Hi Everyone,
I have access to the RTL of an IP and can generate a netlist too by doing the synthesis.

I am interested in calculating the average fan-in to a flop in the design. Is there a tool in the ASIC pipeline that can do that?

Any input would be appreciated.
 

Sort by date Sort by votes
How do you define fan in, immediate connections coming into a flop input pin? Or sequential start points driving a flop d pin?

I'm thinking if there's over counting in getting
All flops, then their D pin nets, then getting drivers of those nets.

Either ways, you could uniquely count this list or as is..then as a last step divide by total flops to get the average?
 

Upvote 0 Downvote
Perhaps it's better to use all fanin with -level or startpoints switch.
 

Upvote 0 Downvote
load the netlist into innovus, use the dbget interface to traverse the list of flip-flops and get their fanins/fanouts

something similar should be possible in Genus as well
 

Upvote 0 Downvote
You must log in or register to reply here.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…