but it looks like the clock-to-out delay here is massive and huge read capture delays greatly improve performance
m
Matthew Guthaus
01/02/2022, 2:10 AM
The output of the SRAM is a pretty tiny buffer, so I'm curious what was added before the IO buffers. I'll have to check that out in the design.
t
Tim Edwards
01/02/2022, 2:43 AM
This chip was done before we had the capability in OpenROAD to do timing analysis at the top level, so I assume that the tiny output buffers are directly driving the pad inputs, and probably through long wires to boot. That would not be realistic for an SRAM used as a macro inside a project.
a
Andrew Zonenberg
01/02/2022, 3:32 AM
Well, the good news is once this data has been collected, it's going to be straightforward to repeat for additional test chips