Executable Functional Specification

Engineer silicon from a single source of intent.

SyncSilica EFS converts human-readable semiconductor specifications into executable architecture models, design and verification collateral, and implementation-conformance workflows.

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EFS execution graph

Architecture intent → verified evidence

01Specification

02Architecture intent

03Executable flows

04Design + verification

05EDA implementation

06Silicon validation

Industry challenge

The specification layer remains disconnected from EDA.

Specifications are largely static documents. Architecture, design, verification, and validation teams manually reinterpret the same intent, while established EDA flows usually begin at RTL.

Static source material

PDF, DOCX, presentations, spreadsheets, tables, and informal diagrams hold critical intent but are not executable.

Duplicated interpretation

Architecture, RTL, verification, and validation teams independently translate the same requirements.

Late mismatch discovery

Ambiguity becomes a verification bug, coverage gap, integration issue, or silicon bring-up failure.

Missing architecture layer

EFS begins before RTL.

EFS complements Cadence, Synopsys, Siemens, RTL copilots, and cloud chip-development platforms by supplying architecture-derived executable intent and generated collateral.

Architecture specification

EFS intelligence layer

RTL generation

Verification

Physical design

What EFS represents

Simple, modular, analyzable, reusable, and testable.

Signals and messages

Represent values, transitions, opcodes, payloads, and communication between IP instances.

Registers and states

Model register events, FSM transitions, waits, acknowledgments, and state-dependent behavior.

Conditions and timing

Express alternate conditions, loops, asynchronous behavior, timeouts, and event dependencies.

Hierarchy and reuse

Compose subsystem flows, reusable subflows, multiple IP instances, and out-of-order sequences.

Specification-driven automation

Convert selected specification intent into engineering assets.

A control table identifies documents, sections, requested extraction, and optional comments—for example, extracting AXI transaction logic from selected protocol sections.

Control table

DocumentSectionDescriptionComments

compute_SS.docxSection 5Generate EFS for I/OMLOAD/MSTORE

axi_spec.pdfA3.3Extract AXI logic—

Architecture intent

Protocol definitions, interfaces, functional behavior, requirements, timing constraints, power intent, and performance targets.

Executable flows

Signals, messages, registers, state transitions, alternate conditions, timeouts, subflows, loops, and out-of-order sequences.

Design + verification

RTL templates, testbench scaffolding, assertions, protocol checkers, test stimulus, coverage, and documentation.

EDA implementation

Simulation, synthesis, LINT, CDC/RDC, logical equivalence checking, static timing, power, and physical implementation.

Silicon validation

Functional, plug-and-play, volume, cross-feature, and coverage validation with mismatch localization.

Agent-centric AI

Four coordinated capabilities generate executable intent.

Front-end controller

Uses a control table to select documents, sections, requested extraction, and optional engineering guidance.

Intelligent backend

Extracts signal, message, register, and event flows from paragraphs, tables, headers, and cross-references.

Dynamic parser

Converts IF, WHILE, loops, waits, acknowledgments, state transitions, and timing dependencies into logical branches.

Auto expansion

Learns protocol and logic patterns, models overlapping protocols, and generates EFS-compatible flows.

Generated artifacts

Architecture-derived collateral for downstream tools.

Executable architecture model

Protocol definitions, interface definitions, functional behavior, system requirements, and reusable architecture intent.

Design collateral

RTL templates, interface modules, register structures, coding guidance, timing constraints, and power-intent inputs.

Verification collateral

Testbench scaffolding, assertions (SVA), protocol checkers, stimulus, coverage models, and documentation.

Validation collateral

Functional, plug-and-play, volume, cross-feature, and implementation-conformance workflows.

AXI proof of concept

Generate, execute, and validate protocol flows.

The demonstrated POC converts high-level functional specifications into EFS, generates EFS checkers, produces a Verilog testbench, executes reset subflows, verifies matching transactions, and localizes condition mismatches.

Generate

Extract AXI read, write, response, snoop, atomic, reset, and subsystem flows from selected specification sections.

Execute

Run signal, message, register, subflow, and function events as an executable model.

Compare

Compare expected EFS behavior with implementation traces and waveform evidence.

Localize

Identify the exact IF condition, signal value, transaction, or step that does not conform.

Capability comparison

A distinct specification-level position.

The uploaded comparison positions EFS as complementary to ChipStack, Cadence, Synopsys, and Zero ASIC—not as a replacement for their RTL, verification, cloud, synthesis, or physical-design capabilities.

Capability	EFS	ChipStack	Cadence	Synopsys	Zero ASIC
Specification parsing	Yes	No	No	No	No
Protocol extraction	Yes	No	No	No	No
Executable specifications	Yes	No	No	No	No
Architecture modeling	Yes	Limited	Limited	Limited	Limited
RTL productivity AI	Limited / roadmap	Yes	Partial	Partial	Partial
Verification automation	Yes	Partial	Yes	Yes	Partial
Specification-conformance checking	Yes	No	No	No	No
EDA-flow integration	Planned	Yes	Yes	Yes	Yes

ChipStack: AI copilot and design-productivity assistance at RTL.

Cadence / Synopsys: Broad verification, synthesis, implementation, and signoff platforms.

Zero ASIC: Cloud-based chip-development platform.

Industry solutions

Apply executable intent across complex SoC and IP programs.

AI accelerators

Tensor pipelines, DMA, HBM, coherency, command sequencing, error handling, and data-movement validation.

CPU and GPU

Cache-coherent flows, memory subsystems, interconnects, reset, power states, and complex subsystem sequences.

Networking and I/O

AXI, CHI, PCIe, CXL, Ethernet, register programming, transaction flows, and interoperability.

Automotive

ADAS, zonal controllers, BMS, safety behavior, cross-feature interaction, and volume validation.

Datacenter systems

Server fabrics, accelerators, high-speed links, platform initialization, and fleet-scale validation.

Make specification intent executable.

Connect architecture, design, verification, EDA implementation, and silicon validation using one reusable and traceable source of engineering intent.

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