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Real Intent brings clock checking to formal tool
Real Intent brings clock checking to formal tool
By Michael Santarini, EE Times
May 29, 2002 (6:10 a.m. EST)
URL: http://www.eetimes.com/story/OEG20020528S0046
SANTA CLARA, Calif. Real Intent Corp. has added what it terms formal clock intent verification to its Verix assertion-driven formal verification tool.
The feature breaks new ground because it analyzes and verifies the stability and correctness of data transfer between clock domains, said Prakash Narain, president and chief executive officer of Real Intent, based here.
"Today's SoCs and communication designs commonly have multiple clock domains, which means different parts of the design are being clocked at different rates," Narain said. "To ensure reliable data path across these interfaces, designers have to employ guidelines that have to do with structural as well as logical design."
He said that the feature, which will be available in version 4.0 of Verix this summer, ensures that the structural and logical guidelines are followed.
Narain explained how it works: Users feed the tool RTL code, either Verilog or V HDL, and identify clocks and resets in their design. Then, the tool automatically identifies the clock domains and the hazards for signals crossing those domains. The absence or presence of synchronizers at the clock domain boundaries also are identified. After running the analysis, the feature advises designers about what assertions they need to place into their designs to formally verify that the data transfer is implemented effectively.
Version 4.0 with the assertion-based formal clock intent verification is being used successfully at beta customer sites, Narain said.
Version 4.0 is also expected to include full-functional VHDL support. Pricing starts at $50,000 per year.
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