Verification of mixed signal system
نویسندگان
چکیده
Verification of mixed signal system By G.Bonfini, M. Chiavacci, R. Mariani, E. Pescari YOGITECH SPA, via Lenin 132/p, 56017 San Martino Ulmiano (Pisa), Italia Electric and Electronic systems account for 49.2% of registered breakdowns (source: Allgemeiner Deutscher Automobil Club, 2003). Recent statistics on ICs said that 71% of System-on-Chip (SoC) re -spins are due to functional bugs, and 47% of them are due to incorrect or incomplete specifications. Moreover, 14% of failing SoCs have bugs in reused components or IPs. This is why 60-70% of the entire product cycle for a complex chip is dedicated to verification tasks. But systems are not only digital: real systems are in fact mixed-signal. Functional verification of mixed-signal systems always requires the interaction between the different methodologies needed to verify the digital elements and the analogue ones. YOGITECH’s proposed approach combines digital and analogue verification, providing verification engineers with a methodology and a set of intellectual properties to interface Specman with AMS Designer building a mixed signal verification environment able to manage high level models and spice level net-list. This approach is especially intended for the automotive market where reliability towards noise and fault injection as well is really critical.
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