Semiconductor vendors face increasing demands to lower power consumption. This trend has intensified in the last couple of years with the rejuvenation of the ‘green’ movement. In response, the industry has been getting smarter about low-voltage design, current-saving techniques for both the circuit and process levels, and coordinated power management. Meanwhile, programmers are concentrating on […]
Traditional verification tools struggle to deal with today’s increasingly sophisticated power management technologies. One major limitation is that they cannot deal with varying power states because they make a built-in assumption that devices are always fully powered on. Further, power-aware verification at the register-transfer level is proving increasingly problematic, although it is also becoming increasingly […]
The article describes the context and need for embedded operating systems that are more responsive to the power management demands placed on today’s electronic devices. It reviews the design objectives for the two main types of power management, reactive and proactive, and examines how both can be implemented. For decades, scientists and engineers have been […]
The article describes a dedicated low-power functional verification methodology, originally developed at STMicroelectronics (now ST-Ericsson). The article details the content, sequence and effectiveness of the methodology as it was tested on a 45nm system-on-chip design. In order of use, the main components are: A high-level verification language testbench Formal verification Rule checking C function library […]
Long before the first portable computer batteries exploded, and even before anyone had the first visions of building massive data centers in the cold northwestern states of Oregon,Washington and Alaska, power consumption by electronic devices was a tough problem for chip designers. The difference now is that we are trying to manage power in ever-smaller […]