When engineers discuss the status and value of the Design Automation Conference (DAC), one topic tends to recur. Fairly or unfairly, the claim is that there has long been an inherent tension between DAC the technical conference and DAC the exhibition. In short, the technical conference has been seen as biased toward tool developers; the […]
Version 4.0 of the VHSIC Hardware Design Language was approved by Accellera and passed to the IEEE to begin its formal standards balloting process earlier this year. The article previews some of the key additions and extensions that form part of VHDL in the following areas: Property Specification Language Intellectual Property Protection Hierarchical names Extensions […]
SystemVerilog, the standard that originated from Accellera and is now IEEE1800, is not just for Verilog users. VHDL users can also improve their design processes using its proven verification features. Anyone involved in systemon- chip (SoC) design may face a mixed-language environment and will appreciate being able to leverage SystemVerilog with the VHDL portions of […]
ARC International is one of the largest suppliers of configurable processor technology. It licenses patented configurable multimedia subsystems and CPU/DSP processors that are used to design differentiated products. They are optimized for use in systemson- chip (SoCs) that consume less power, are less expensive to produce and require protection from cloning. The ARC Energy PRO […]
The semiconductor industry faces increasing challenges in the design of complex systems-on-chip, and while some have sprung from new, only recently anticipated sources, others are, in fact, very familiar. Foremost among these are the interconnect delays caused by the increasing influence of parasitic networks. Parasitic inductance is also a growing concern. The causes of parasitic […]
The article describes and illustrates, by way of a case study, an innovative approach to functional verification. It enables the reuse of test patterns through the coordinated combination of a top-level testbench and subordinate testbench modules. It is based on a new add-on tool, VTrac+, that extends Mentor Graphics’ ModelSim/Questa software to stimulate, compare and […]
For simulation to correctly predict silicon behavior, the logic implementing a design should adhere to the setup and hold constraints specified for clocked elements. However, with multiple asynchronous clocks on a single chip driving logic, designers cannot help but violate setup and hold constraints. This causes metastability, which in its turn leads to non-deterministic delays […]
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 […]
How visibility-enhanced debug works The emergence of ‘visibility enhancement’ technology provides verification teams with an optimal trade-off between simulation performance and signal visibility. Visibility enhancement enables a methodology consisting of an analysis-driven partial signal dumping procedure that limits the impact on emulation performance while still providing full signal visibility for debug. These are some key […]
Verification has become one of the main bottlenecks in hardware and system design. Several verification languages, methods and tools addressing different issues in the process have been developed by EDA vendors in recent years. This paper takes the industrial user’s point of view to explore the difficulties posed when introducing new verification methods into ‘naturally […]
