Don’t Shoot Yourself in the Foot With Timing Exceptions

Don’t Shoot Yourself in the Foot With Timing Exceptions
by Paul McLellan on 08-15-2013 at 1:42 pm

Timing exceptions are ways of guiding design tools, primarily synthesis and static timing analysis (STA), but these days also place & route and perhaps other tools. Most paths in a design go from one register to the next register. Both registers are on the same clock, and the design needs to ensure that the signal can make it from… Read More


New Book on Design Constraints

New Book on Design Constraints
by Paul McLellan on 07-20-2013 at 10:18 pm

There is a new book out from Springer. The subtitle is actually a better description that the title. The subtitle is A Practical Guide to Synopsys Design Constraints (SDC) but the title isConstraining Designs for Synthesis and Timing Analysis. The authors are Sridhar Gangadharan of Atrenta in San Jose and Sanjay Churiwala of Xilinx… Read More


DAC: Tempus Lunch

DAC: Tempus Lunch
by Paul McLellan on 06-06-2013 at 4:03 pm

I had time for lunch on Monday. That is to say, there was a Cadence panel session about Has Timing Signoff Innovation has become and Oxymoron? What Happened and How Do We Fix It?

The moderator was Brian Fuller, lately of EE Times but now Editor-in-Chief at Cadence (I’m not sure quite what it means either). On the panel were Dipesh… Read More


Ausdia’s Timevision

Ausdia’s Timevision
by Paul McLellan on 06-11-2012 at 8:05 pm

I met Sam Appleton of Ausdia during DAC. I found it quite hard to understand exactly what they do. I’ve talked before about something that I nick-named City Slickers’ Marketing. It is named after the following exchange from the movie City Slickers:Curly: Do you know what the secret of life is? [holds up one finger] This.Read More