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FPGA Interchange Schema

The Field Programmable Gate Array (FPGA) Interchange Schema from CHIPS Alliance is an open specification and data model for representing FPGA device, netlist, and implementation data in a vendor‑neutral, tool‑independent format (EDA interoperability).

  • Defines a common schema for FPGA architecture, netlists, and implementation artifacts (EDA data modeling).
  • Targets portability of FPGA design data across different Electronic Design Automation (EDA) tools and FPGA vendors (design interoperability).
  • Enables standardized machine-readable exchange via protocol buffer definitions and associated formats (data exchange format).
  • Supports open-source FPGA tooling efforts under the CHIPS Alliance ecosystem (open EDA tooling).
  • Provides documentation, examples, and reference materials for integrating the schema into FPGA design flows (design flow integration).

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The FPGA Interchange Schema, hosted under the CHIPS Alliance organization, is a specification and reference implementation for a common, tool-independent representation of FPGA design and device data. It addresses the fragmentation that occurs when each FPGA vendor and EDA tool uses its own proprietary data formats for describing device architectures, netlists, placement, and routing. By defining a vendor-neutral schema, the project enables consistent, machine-readable exchange of FPGA-related information across tools and workflows.

The project defines a data model (EDA data modeling) for core FPGA concepts such as logical and physical device structures, programmable interconnects, and design netlists. The schema is expressed using protocol buffers (data serialization), which allows automated generation of language bindings and serialization routines. This approach supports use in a range of tools and programming environments, while keeping the canonical definition of fields, relationships, and constraints in a single, version-controlled specification.

Within enterprise and institutional environments, the FPGA Interchange Schema can be integrated into custom or open-source FPGA design flows (hardware design automation). It provides a common interface layer between architecture description, synthesis, placement, routing, analysis, and verification tools. Organizations that combine vendor tools with open-source or in-house EDA components can use the schema to minimize format conversions and reduce the need for bespoke, point-to-point integrations between tools.

The project is developed under the CHIPS Alliance umbrella (open hardware ecosystem), which focuses on open-source hardware designs and associated tooling. As part of this ecosystem, the FPGA Interchange Schema is positioned to interoperate with other CHIPS Alliance projects that consume or produce FPGA-related data. The schema’s protocol buffer basis also allows extension through additional fields or messages while preserving compatibility with existing definitions, which supports incremental adoption across heterogeneous toolchains.

From a technical classification perspective, the FPGA Interchange Schema fits into the categories of EDA interoperability, design data modeling, and vendor-neutral exchange formats for programmable logic devices. It is relevant for architects and tool developers who need a stable schema for representing FPGA architectures and implementation results, and for enterprises that want consistent data handling across FPGA workflows spanning multiple vendors and open-source tools.