SAN FRANCISCOEDA and IP vendor Synopsys Inc. Wednesday (Nov. 19) introduced a new modeling technology said to reduce digital cell library file size by up to 75 percent while improving application tool runtime and capacity.
Synopsys (Mountain View, Calif.) said Composite Current Source (CCS) base curve modeling technology takes advantage of similarities in timing and power current waveforms across various grid points as well as various cells in libraries to minimize the amount of data stored without impact on accuracy.
According to Synopsys, increased process variation and low power design flows at 65- and 45-nm require more library corners as well as more complete and accurate power modeling views, causing library file size to increase dramatically.
"Current source modeling is an essential library requirement at 65-nanometers and below process technologies," said Noboru Yokota, general manager of Fujitsu Microelectronics Ltd.'s technology development division, in a statement.
"However, the increase in the number of corners and the library file size can cause a major bottleneck in library deployment and EDA tool efficiency," Yokota said. "The enhanced CCS with base curve modeling technology is designed to deliver the smallest, most efficient libraries while maintaining the high accuracy necessary at the latest process geometry nodes."
Base curve technology improves application tool capacity and allows signoff tools to run up to 60 percent faster, the company said.
The enhanced CCS library format with base curve syntax has been approved by the Liberty Technical Advisory Board, a program of the IEEE Industry Standards and Technology Organization , and is available for immediate download on the Open Source Liberty site, Synopsys said.