by Erich Marschner, Product Manager, Questa Power Aware Simulation, Mentor Graphics
Usage of the Unified Power Format (UPF) is growing rapidly as low power design and verification becomes increasingly necessary. In parallel, the UPF standard has continued to evolve. A previous article1 described and compared the initial UPF standard, defined by Accellera, and the more recent IEEE 1801-2009 UPF standard, also known as UPF 2.0. The IEEE definition of UPF is the current version of the standard, at least for now, but that is about to change. The next version, UPF 2.1, is scheduled for review by the IEEE Standards Review Committee in early March. When it is approved, UPF 2.1 will become the current version of the UPF standard.