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5.10 Inter-Integrated Circuit (I2C)

5.10.1

I2C Device-Specific Information

TMS320DM643

Video/Imaging Fixed-Point Digital Signal Processor

SPRS269C – FEBRUARY 2005 – REVISED JANUARY 2007

The inter-integrated circuit (I2C) module provides an interface between a TMS320C6000™ DSP and other

devices compliant with Philips Semiconductors Inter-IC bus (I2C bus) specification version 2.1 and

connected by way of an I2C-bus. External components attached to this 2-wire serial bus can

transmit/receive up to 8-bit data to/from the DSP through the I2C module.

The I2C module on the TMS320DM643 may be used by the DSP to control local peripherals ICs (DACs,

ADCs, etc.) while the other may be used to communicate with other controllers in a system or to

implement a user interface.

The I2C port supports:

• Compatible with Philips I2C Specification Revision 2.1 (January 2000)

• Fast Mode up to 400 Kbps (no fail-safe I/O buffers)

• Noise Filter to Remove Noise 50 ns or less

• Seven- and Ten-Bit Device Addressing Modes

• Master (Transmit/Receive) and Slave (Transmit/Receive) Functionality

• Events: DMA, Interrupt, or Polling

• Slew-Rate Limited Open-Drain Output Buffers

Figure 5-37 is a block diagram of the I2C0 module.

DM643 Peripheral Information and Electrical Specifications

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