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FPGA Interchange Schema

Field Programmable Gate Array (FPGA) Interchange Schema is a CHIPS Alliance project that defines an open, vendor-neutral data schema (electronic design automation) for describing FPGA devices, architectures, netlists, and implementation data to support interoperable FPGA tooling.

  • Open, vendor-neutral schema for representing FPGA device, netlist, and implementation data (electronic design automation).
  • Defines structured models for logical netlists, physical device resources, placements, and routings (FPGA design representation).
  • Targets interoperability between different FPGA toolchains and ecosystems via a shared interchange format (tool interoperability).
  • Supports description of FPGA architectures, tiles, wires, and programmable interconnect to enable routing and placement workflows (FPGA architecture modeling).
  • Maintained under CHIPS Alliance governance with specifications and documentation published on Read the Docs (open hardware ecosystem).

More About fpga-interchange-schema.readthedocs.io

FPGA Interchange Schema is a specification under CHIPS Alliance that focuses on a common, open data model (electronic design automation) for FPGA design information. The schema is intended to describe FPGA architectures, design netlists, and implementation artifacts in a way that is not tied to any single vendor toolchain. By standardizing how device resources and design data are represented, it enables multiple tools to exchange information about the same FPGA design without custom, proprietary adapters.

The project documentation describes a schema that covers several classes of objects (FPGA design representation), including logical netlists, physical device models, and implementation results such as placement and routing. Netlist objects capture entities such as cells, ports, nets, and connections. Device descriptions model components such as tiles, sites, wires, and programmable interconnect points that reflect the underlying FPGA fabric. Implementation-oriented objects record how a particular netlist is mapped onto a device, including which cells are placed on which sites and which routing resources carry each signal.

The schema is organized to support use in automated design flows (EDA flows), such as synthesis, packing, placement, and routing stages. Tool developers can import device and netlist data encoded using the schema, run domain-specific algorithms, and then export updated design states without losing information about the original device model. This supports workflows where different tools handle different steps of the FPGA compilation process while still referencing a shared, well-defined representation of the device and design.

Within enterprise and institutional environments, FPGA Interchange Schema is relevant for teams that build or integrate custom FPGA design tools (design automation tooling) or that require reproducible, auditable flows across multiple vendors or open-source frameworks. The schema allows organizations to decouple internal algorithms for analysis, optimization, or verification from proprietary file formats. It can also serve as an internal data contract between tools maintained by different teams or partners, simplifying integration work and enabling substitution of tools over time.

From a technology perspective, the project is closely associated with open FPGA and open Electronic Design Automation (EDA) initiatives (open hardware ecosystem) under the CHIPS Alliance umbrella. Documentation and reference materials describe the data structures, object relationships, and serialization approach used by the schema. The project fits into taxonomy categories such as “FPGA design representation,” “EDA interoperability format,” and “open hardware tooling infrastructure,” and can be indexed alongside other formats, schemas, and protocols used for hardware design, verification, and implementation workflows.