OVERVIEW

The TrueSilicon I2C Controller IP is a highly configurable and robust serial communication interface designed for seamless integration into modern System-on-Chip (SoC) architectures. It enables reliable, low-latency communication between host processors and a wide range of peripheral devices such as sensors, EEPROMs, ADCs, and power management components over the industry-standard I2C Bus Specification.

The controller supports both master and slave modes of operation, allowing it to either initiate transactions or respond to external masters on the bus. It is fully compliant with standard, fast, fast-plus, and highspeed I2C modes, providing flexibility to meet diverse performance and power requirements across applications.

The controller integrates easily with AMBA-based systems through an APB interface, allowing efficient configuration, control, and status monitoring.

To improve system efficiency and reduce processor intervention, the controller incorporates dedicated transmit and receive FIFOs, supporting buffered data transfers and burst transactions. Advanced protocol handling features such as multi-master arbitration, and automatic ACK/NACK management ensure compliance with the I2C specification while maintaining robust  communication in complex bus environments.

The controller includes comprehensive error detection and handling mechanisms, such as arbitration loss detection, bus timeout monitoring, and FIFO overflow/underflow protection, enabling reliable operation even under fault conditions. Configurable interrupt generation supports efficient event-driven processing for data transfer completion, error conditions, and FIFO status changes.

Designed as a fully synchronous RTL implementation, the IP ensures predictable timing behaviour, simplified clock domain integration, and ease of static timing analysis (STA). The architecture is optimized for power, performance, and area (PPA), making it suitable for a wide range of applications including consumer electronics, industrial automation, and embedded control systems.

Figure 1 & 2 depicts the high-level architecture of the I2C Controller IP Master/Slave,highlighting the APB configuration interface, SDA/SDA driver, transmit and receive data FIFOs, Shift registers and interrupt controller. 

With its scalable architecture, rich feature set, and integration-friendly design, the TrueSilicon I2C Controller IP provides a reliable and efficientcommunication solution that accelerates SoC development and simplifies system-level design.

Figure 1 - High-level architecture of the TrueSilicon I2C Controller IP Master

Figure 2 - High-level architecture of the TrueSilicon I2C Controller IP Slave