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TMS320DM641 Datasheet(PDF) 128 Page - Texas Instruments |
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TMS320DM641 Datasheet(HTML) 128 Page - Texas Instruments |
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128 / 171 page  Inter-Integrated Circuit (I2C) 128 June 2003 − Revised August 2004 SPRS222C 4.10 Inter-Integrated Circuit (I2C) 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. 4.10.1 I2C Device-Specific Information The I2C module on the TMS320DM641/DM640 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 4−35 is a block diagram of the I2C0 module. Clock Prescale I2CPSCx Peripheral Clock (CPU/4) I2CCLKHx Generator Bit Clock I2CCLKLx Noise Filter SCL I2CXSRx I2CDXRx Transmit Transmit Shift Transmit Buffer I2CDRRx Shift I2CRSRx Receive Buffer Receive Receive Filter SDA I2C Data Noise I2COARx I2CSARx Slave Address Control Address Own I2CMDRx I2CCNTx Mode Data Count Source Interrupt Interrupt Status I2CISRCx I2CSTRx Enable Interrupt I2CIERx Interrupt/DMA I2C0 Module NOTE A: Shading denotes control/status registers. I2C Clock Figure 4−35. I2C0 Module Block Diagram |
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