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Overview

SmartDV’s JTAG Slave to AXI Bridge IP is a silicon-proven, high-performance debug and test access solution engineered for SoC designs requiring seamless connectivity between an external JTAG master and an AMBA AXI-based on-chip interconnect. Fully compliant with IEEE 1149.1-2013, IEEE 1149.6, and AMBA AXI4 specifications, it enables direct read and write access to the full AXI address space from a standard JTAG test interface, providing comprehensive debug, bring-up, and in-system programming capability for high-performance SoC designs.

By bridging the JTAG test access port directly to the AXI bus fabric, it delivers a standards-compliant debug access path to the highest-performance on-chip interconnects without requiring a dedicated debug subsystem. Its support for the full AXI4 protocol including burst transfers and outstanding transactions makes it well-suited for complex, high-bandwidth SoC architectures where complete memory and register access from a JTAG interface is essential.

Built for design flexibility and silicon efficiency, the IP core is highly configurable for both ASIC and FPGA implementations, with a strong focus on area optimization, power management, and peak performance. Its parameterized architecture and clean bridge interface enable fast integration and confident design bring-up across a wide range of process nodes and target applications.

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JTAG Slave to AXI Bridge
Key Features
  • Full JTAG to AXI Bridge Functionality – Complete TAP controller with direct read/write access to the AXI bus fabric via standard JTAG interface
  • Full JTAG TAP Controller Support – Complete IEEE 1149.1-2013 TAP state machine with support for all standard JTAG instructions
  • IEEE 1149.6 Support – Extended boundary scan coverage for AC-coupled and differential signal domains
  • Programmable Clock Frequency – Configurable TCK frequency for flexible adaptation to host test environment timing requirements
  • Configurable Register Sizes – Supports instruction registers and data registers of various sizes for broad device compatibility
  • Full AXI4 Protocol Support – Complete high-performance bus access including burst transfers, outstanding transactions, and full response handling per AMBA AXI4 specification
Compliance and Compatibility
  • Fully compliant with IEEE 1149.1-2013 (JTAG) Standard Test Access Port and Boundary-Scan Architecture
  • Optional support for IEEE 1149.6 AC-coupled and differential boundary scan
  • Fully compliant with ARM AMBA AXI4 specification
  • Configurable SoC interface supporting custom wrappers for seamless integration
  • Compatible with ASIC and FPGA design flows across leading foundry process nodes
  • Compatible with all major EDA synthesis, simulation, and linting flows

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