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Overview

SmartDV’s I2C Master IP is a silicon-proven, fully featured Inter-Integrated Circuit bus master solution purpose-built for SoC designs requiring reliable, standards-compliant master-side I2C connectivity across embedded, IoT, automotive, and consumer electronics applications. Fully compliant with I2C v7.0 (NXP UM10204), it delivers complete I2C master functionality with both HCI and non-HCI interface support, across Standard-mode (100 kbit/s), Fast-mode (400 kbit/s), Fast-mode Plus (1 Mbit/s), High-speed mode (3.4 Mbit/s), and Ultra Fast-mode (5 Mbit/s, unidirectional).

Designed for the practical integration requirements of modern I2C-based embedded SoC designs, the IP supports Start, repeated start, and stop for all possible transfers, 7-bit and 10-bit addressing, and single or multi-master bus configurations. Its optional built-in DMA controller for slave-side operation, optional built-in host controller interface for command-queue-based master command processing, General Call address handling, START byte generation and handling, and master arbitration with clock synchronization give embedded SoC teams a production-tested, spec-complete I2C master implementation for the full range of modern I2C bus architectures.

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 host interface enable fast integration and confident design bring-up across a wide range of process nodes and target applications.

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I2C Master
Key Features
  • Full I2C Master Functionality – Complete master implementation per I2C v7.0 with HCI and non-HCI interface support
  • All Standard Speed Modes – Standard-mode (100 kbit/s), Fast-mode (400 kbit/s), Fast-mode Plus (1 Mbit/s), High-speed mode (3.4 Mbit/s), and Ultra Fast-mode (5 Mbit/s)
  • Flexible Bus Topology – Single-master and multi-master bus configuration support with master arbitration and clock synchronization
  • Complete Transfer Sequence Support – Start, repeated start, and stop condition generation for all possible transfer types
  • Dual Addressing Modes – 7-bit and 10-bit slave addressing for broad I2C device compatibility
  • Optional Built-In DMA Controller – Optional integrated DMA controller for efficient slave-side data movement
  • Optional Host Controller Interface – Optional command-queue-based master command processing interface for reduced processor overhead
  • General Call and START Byte Support – Complete General Call address handling and START byte generation and handling for legacy CBUS compatibility
Compliance and Compatibility
  • Fully compliant with I2C v7.0 specification (NXP UM10204, October 2021)
  • Uses current NXP terminology: controller-target relationship (formerly master-slave)
  • Configurable SoC interface supporting AMBA AXI, AHB, APB, and 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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