Timing verification of sequential domino circuits
Proceedings of the 1996 IEEE/ACM international conference on Computer-aided design
Design methodology for the S/390 parallel enterprise server G4 microprocessors
IBM Journal of Research and Development - Special issue: IBM S/390 G3 and G4
Power-delay optimizations in gate sizing
ACM Transactions on Design Automation of Electronic Systems (TODAES)
Proceedings of the 39th annual Design Automation Conference
Logic Synthesis and Verification
Proceedings of the 8th ACM/IEEE international workshop on Timing issues in the specification and synthesis of digital systems
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
RESTA: a robust and extendable symbolic timing analysis tool
Proceedings of the 14th ACM Great Lakes symposium on VLSI
Delay insertion method in clock skew scheduling
Proceedings of the 2005 international symposium on Physical design
Timing modeling of latch-controlled sub-systems
Integration, the VLSI Journal
Hi-index | 0.00 |
This paper extends the classical notion of critical paths in combinational circuits to the case of synchronous circuits that use level-sensitive latches. Critical paths in such circuits arise from setup, hold, and cyclic constraints on the data signals at the inputs of each latch and may extend through one or more latches. Two approaches are presented for identifying these critical paths and verifying their timing. The first implicitly checks all paths using a relaxation-based solution procedure. Results of this procedure are used to calculate slack values, which in turn identify satisfied and violated critical paths. The second approach is based on a constructive algorithm which generates all the critical paths in a circuit and then verifies that their timing constraints are satisfied. Algorithms are evaluated and compared using circuits from the ISCAS89 sequential benchmark suite and the Michigan High Performance Microprocessor Project.