I2C Controller Reference Design
Request this reference design along with an evaluation version of the I2C IP Core.
Overview
The Microtronix inter-IC (I2C) Controller reference design uses the I2C controller intellectual property (IP) along with the Nios® II embedded processor and peripherals. This reference design is built to work on the Nios II development kits specified below.
The I2C bus is a simple two-wire, bidirectional interface developed for I2C communication with Santa Cruz headers and any I2C slave device with compatible pins. This flexible design makes it easy to communicate effectively with the Microtronix I2C board.
The Microtronix I2C IP core is a complete I2C solution offering three modes of operation: I2C master controller, I2C slave controller, and an 8-bit parallel I/O (PIO) slave device. Three I2C bus transmission speeds are supported: 100 Kbps (normal), 400 Kbps (fast), and 3.4 Mbps (high speed). The Microtronix I2C master/slave core provides a generic memory-mapped bus interface. It is also designed as an Altera® SOPC Builder ready component and integrates easily into any SOPC Builder generated system using a Nios II Avalon® system interconnect fabric.
The Microtronix I2C PIO slave core is provided as an Altera Quartus® II megafunction and integrated into the Altera MegaWizard® Plug-In Manager.
Features
- I2C master/slave transmitter and receiver IP core
- Nios II embedded processor
- I2C 8-bit PIO slave core
- Own address and general call address detection
- Input clock filter
- Meets Philips I2C bus specification version 2.1
- Seven bits addressing format
- Single byte transmit and receive buffer
- 300 logic elements (LEs) for Avalon master/slave, 100 LEs for PIO
Demonstrated Altera Technology
Block Diagram
Figure 1 shows an I2C controller system-level diagram.
Figure 1. Microtronix I2C Controller Reference Design Block Diagram
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Reference Designs Disclaimer
These reference design illustrations may be used within Altera Corporation devices only and remain the copyrighted property of Altera. They are being provided on an "as-is" basis and as an accommodation, and therefore all warranties, representations, or guarantees of any kind (whether express, implied, or statutory) including, without limitation, warranties of merchantability, non-infringement, or fitness for a particular purpose, are specifically disclaimed. Altera expressly does not recommend, suggest, or require that these examples be used in combination with any other product not provided by Altera.
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