Description

The I2C is a two-wire, bi-directional serial bus, which provides a simple and efficient method of short distance data transmission between many devices. The DI2CMS core provides an interface between a microprocessor / microcontroller and I2C bus. It can work as:

  • a master or
  • slave transmitter/receiver

depending on a working mode determined by the microprocessor/microcontroller. The DI2CMS core incorporates all features required by the latest I2C specification, including clock synchronization, arbitration, multi-master systems and a high-speed transmission mode (the DI2CMS supports all transmission speed modes). Built-in timer allows operation from wide range of clk frequencies. The DI2CMS is technology independent, so either VHDL or VERILOG design can be implemented in variety of process technologies. Furthermore, it can be also completely customized in accordance to your needs. The DI2CMS is delivered with fully automated test bench and complete set of tests, allowing easy package validation at each stage of SoC design flow.

Key features

  • Conforms to v.3.0 of the I2C specification
  • Master mode
    • Master operation
      • Master transmitter
      • Master receiver
    • Support for all transmission speeds
      • Standard (up to 100 kb/s)
      • Fast (up to 400 kb/s)
      • Fast Plus (up to 1 Mb/s)
      • High Speed (up to 3,4 Mb/s)
    • Arbitration and clock synchronization
    • Support for multi-master systems
    • Support for both 7-bit and 10-bit addressing formats on the I2C bus
    • Build-in 8-bit timer for data transfers speed adjusting
  • Slave mode
    • Slave operation
      • Slave transmitter
      • Slave receiver
    • Supports 3 transmission speed modes
      • Standard (up to 100 kb/s)
      • Fast (up to 400 kb/s)
      • Fast Plus (up to 1 Mb/s)
      • High Speed (up to 3,4 Mb/s)
    • Allows operation from a wide range of input clock frequencies
    • User-defined data setup time
  • User-defined timing (data setup, start setup, start hold, etc.)
  • Simple interface allows easy connection to microprocessor/microcontroller devices
  • Interrupt generation
  • Available system interface wrappers:
    • AMBA – APB Bus
    • Altera Avalon Bus
    • Xilinx OPB Bus
  • Fully synthesizable
  • Static synchronous design
  • Positive edge clocking and no internal tri-states
  • Scan test ready

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