Path Based UPF Strategies Explained

Path Based UPF Strategies Explained
by Tom Simon on 03-29-2022 at 6:00 am

Path Based UPF Semantics

The development of the Unified Power Format (UPF) was spurred on by the need for explicit ways to enable specification and verification of power management aspects of SoC designs. The origins of UPF date back to its first release in 2007. Prior to that several vendors had their own methods of specifying power management aspects … Read More


Working with the Unified Power Format

Working with the Unified Power Format
by Daniel Payne on 02-23-2022 at 10:00 am

UPF design flow min

The Accellera organization created the concept of a Unified Power Format (UPF) back in 2006, and by 2007 they shared version 1.0 so that chip designers would have a standard way to communicate the power intentions of IP blocks and full chips. By 2009 the IEEE received the Accellera donation on UPF , reviewed multiple drafts and published… Read More


Verific Sharpening the Saw

Verific Sharpening the Saw
by Bernard Murphy on 02-11-2022 at 6:00 am

Sharpening the saw min

Verific is an unusual company. They are completely dominant in what they do – providing parsers for Verilog/SV, VHDL and UPF. Yet they have no ambition to expand beyond that goal. Instead, per Michiel Ligthart (President and COO), they continue to “sharpen the saw”. This is an expression I learned in sales training, habit #7 from… Read More


Webinar – How to manage IP-XACT complexity in conjunction with RTL implementation flow

Webinar – How to manage IP-XACT complexity in conjunction with RTL implementation flow
by Daniel Payne on 10-26-2021 at 10:00 am

RTL Integration

Standards help our EDA and IP industry grow more quickly and with less CAD integration efforts, and IP-XACT is another one of those Accellera standards (1685-2009) that is coming of age, and enabling IP reuse for SoC design teams. Here at SemiWik, we’ve been writing about Defacto Technologies and their prominent use of IP-XACT… Read More


Probing UPF Dynamic Objects

Probing UPF Dynamic Objects
by Tom Simon on 01-28-2021 at 6:00 am

Probing UPF Dynamic Objects

UPF was created to go beyond what HDL can do for managing on-chip power. HDLs are agnostic when it comes to dealing with supply & ground connections, power domains, level shifters, retention and other power management related elements of SoCs. UPF fills the breach allowing designers to specify in detail what parts of the design… Read More


Does IDE Stand for Integrated Design Environment?

Does IDE Stand for Integrated Design Environment?
by Daniel Nenni on 12-21-2020 at 6:00 am

SemiWiki2 design 1

As regular readers may know, every few months I check in with Cristian Amitroaie, CEO of AMIQ EDA, to see what’s new with the company and their products. In our posts so far this year we’ve focused on verification, and now I’m wondering how an integrated development environment (IDE) provides benefits to designers. They work on huge… Read More


Low Power and RISC-V Talks at DAC2020, Hosted by Mentor

Low Power and RISC-V Talks at DAC2020, Hosted by Mentor
by Bernard Murphy on 07-28-2020 at 6:00 am

low battery

I’m going to get to low power and RISC-V, but first I’m trying out virtual DAC this year. Seems to be working smoothly, aside from some glitches in registration. But maybe that’s just me – I switched email addresses in the middle of the process. Some sessions are live, many pre-recorded, not quite the same interactive experience… Read More


The Moving Target Known as UPF

The Moving Target Known as UPF
by Tom Simon on 06-18-2020 at 10:00 am

UPF hierarchy

As if engineers did not have enough difficulty just getting everything right so that their designs are implemented functionally correct, the demands of lowering power consumption require changes that can affect functionality and verification. Techniques such as power gating, clock gating, mixed supply voltage, voltage … Read More


Synopsys Low Power Workshop Offers Breadth and Depth

Synopsys Low Power Workshop Offers Breadth and Depth
by Bernard Murphy on 06-18-2019 at 5:00 am

Synopsys seems to particularly excel at these events, whether in half-day tutorials at conferences or, as in this case, in a full-day on-site workshop. You might think there’s not much that can be added in this domain, other than to bring low-power newbies up to speed, but you’d be wrong. This event set the stage with surveys on needs… Read More


Magillem offers a practical UPF power flow

Magillem offers a practical UPF power flow
by Tom Simon on 05-28-2019 at 10:00 am

We already know that IP-Xact is extremely useful for managing IP and SOC design specifications, yet it may come as a surprise to learn that it also can be used to form the basis of a power flow too. There are design tools that read UPF to help implement and verify designs, however it can be extremely useful to understand the interplay … Read More