20–23 May 2025
CERN
Europe/Zurich timezone
We published some of the talk schedule. Timetable is still **preliminary**, times are subject to change.

Abstract interface modelling for better genericity and code clarity

21 May 2025, 14:40
30m
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
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Solutions to everyday digital design problems Solutions to everyday digital design problems

Speaker

Nicolas Pouillon (Ellisys)

Description

AXI4 (Memory-Mapped, Stream) is a well established set of flexible bus interfaces. They can support various address and/or data widths, have optional support for bursts, byte strobing, back-pressure, sideband signals, etc.

Writing generic yet easily maintainable AXI-compatible modules is hard: implementation must take care of abiding interoperability rules for optional signals at all times. Using generics and relying on default port values is root for a code maintenance nightmare, if even possible at all.

Using standard VHDL-93 constructs, We propose an approach for modelling interfaces and configuration in an abstract manner in a way it guarantees correct protocol encoding/decoding with enhanced code compactness, clarity and genericity, still producing optimal synthesis results.

Method, applied to AXI4, will be described in depth. Application of the method to other classes of modelling problems will be discussed.

Reusable library will be available under MIT license.

Talk's Q&A During the talk
Talk duration 20'+10'
Will you be able to present in person? Yes

Author

Nicolas Pouillon (Ellisys)

Presentation materials

There are no materials yet.