What is UPF in physical design?
Unified Power Format (UPF) is an industry wide power format specification to implement low power techniques in a design flow. UPF is designed to reflect the power intent of a design at a relatively high level. The design flow is accompanied by an example-driven and self-study tutorial suitable for hands-on teaching.
What is power domain in UPF?
Hence, the UPF power domain is a collection of instances that are treated as a group for power-management purposes. The interface of a power domain is the union of the upper boundary and the lower boundary of the power domain.
What is UPF VLSI?
UPF is an acronym for Unified Power Format which is an IEEE standard for specifying power intent.
What is UPF synthesis?
The synthesis tool infers the low-power behavior specified in the UPF and adds the following low-power cells to the design: Isolation cells to signals crossing power domains. Level shifters to signals crossing voltage domains. Replacement of all flops with retention flops where specified.
Why is UPF required?
The Unified Power Format (UPF) is a published IEEE standard and developed by members of Accellera. It is intended to ease the job of specifying, simulating and verifying IC designs that have a number of power states and power islands.
What is power intent?
Specifically, explained Will Ruby, senior director of product engineering and applications at Apache Design Solutions, “power intent describes the partitioning of a design into power domains. Power intent also sometimes describes the control signals that are used to control these power domains.
What is power state table in UPF?
The power/supply sets state of the power objects are the entry values in the power state table. In UPF 2.0, power state definitions using add_power_state commands are hierarchical in nature. That is, the power state of a system is dependent on power state of its constituent IPs (represented as power domains).
What does UPF 50 mean?
Ultraviolet Protection Factor
Ultraviolet Protection Factor (UPF) indicates how much UV radiation (both UVB and UVA) a fabric allows to reach your skin. For example, a UPF 50 fabric blocks 98 percent of the sun’s rays and allows two percent (1/50th) to penetrate, thus reducing your exposure risk significantly.
What is UPF engineering?
Unified Power Format (UPF) is the popular name of the Institute of Electrical and Electronics Engineers (IEEE) standard for specifying power intent in power optimization of electronic design automation.
What is isolation strategy in UPF?
An isolation strategy is specified in the UPF file, but an isolation cell is not present in the design. Two different clamp values are specified for an isolation cell in the UPF file. The value at the output of an isolation cell is different from that at its input during normal working conditions.
What is UPF model?
The UPF information model (UPF IM) is a standard, unique, and unified power management framework (or database) for storing and manipulating UPF and HDL objects and their properties.
Why is the Unified Power Format ( UPF ) important?
The Unified Power Format (UPF) is a published IEEE standard and developed by members of Accellera. It is intended to ease the job of specifying, simulating and verifying IC designs that have a number of power states and power islands.
What are the components of the UPF power domain?
Components of UPF Power Domain: – Groups of elements which share a common set of power supply requirements Power Supply Network – Abstract description of power distribution (ports, nets, sets & switches)
Which is the most recent version of UPF?
The most recent officially published version is IEEE 1801-2013. What does it do? UPF is designed to reflect the power intent of a design at a relatively high level.
How are CPF and UPF used in power aware flow?
However, the CPF and UPF definitions are unusual in that they are meant to be used with all tools in a power-aware flow – the tools themselves have to determine whether the commands supplied in the Tcl script are relevant to them or not.