I2C Slave to AXI Bridge IP

Design IP

Overview

SmartDV’s I2C Slave to AXI Bridge IP is a silicon-proven solution that enables seamless communication between low-speed I2C-based peripherals and high-speed AXI-based systems. Designed to act as a protocol converter, it allows an I2C master to access AXI memory-mapped registers, facilitating efficient integration in SoC designs for embedded, consumer, and industrial applications.

Designed for flexibility, the IP core is highly configurable to meet specific design requirements, supporting both ASIC and FPGA implementations while optimizing for area, power, and performance. It ensures smooth protocol translation with built-in support for flow control, address decoding, and clock domain crossing, making it ideal for systems requiring reliable bridging between control and data planes.

Benefits

Seamless Protocol Bridging – Bridges an I²C Slave interface to an AMBA AXI bus, enabling efficient communication between low-speed I²C peripherals and high-performance AXI-based systems
Flexible Addressing and Data Handling – Supports both 7-bit and 10-bit addressing modes, general call handling, and programmable addressing for easy integration into multi-slave systems
High-Speed Operation – Compliant with Standard (100 kbit/s), Fast (400 kbit/s), Fast-Plus (1 Mbit/s), High-Speed (3.4 Mbit/s), and Ultra-Fast (5 Mbit/s, unidirectional) I²C modes
Efficient Bus Access – Converts I²C commands into AXI read/write transactions, supporting single and burst transfers for optimized system access
Robust Error Management – Handles ACK/NACK signaling, clock stretching, and arbitration loss recovery to ensure reliable data exchange between interfaces
Optimized for SoC Integration – Fully compatible with AXI5, AXI4, AXI3, and AXI-Lite interfaces, allowing easy configuration within diverse SoC architectures

Compliance and Compatibility

Fully compliant with NXP I²C-bus Specification and User Manual (UM10204)
Conforms to AMBA AXI Specification
Compatible with all major EDA synthesis, simulation, and linting flows

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