Quad DSI 2.02 Leader, Differential Drive, Freq Spread

MC33781

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The NXP® MC33781 is a leader device for four differential DSI 2.02 buses that contains the logic to interface the buses to a standard SPI port and the analog circuitry to drive data and power over the bus, as well as receive data from the remote follower devices.

  • The differential mode generates lower electromagnetic interference (EMI) in situations where data rates and wiring make this a problem
  • Frequency spreading further reduces interference by spreading the energy across many frequencies, reducing the energy in any single frequency
  • Tools: Limited Evaluation boards available; contact sales

Product Details

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Block Diagram

Freescale MC33781 Network Transceivers Block Diagram

NXP<sup>&#174;</sup> MC33781 Network Transceivers Block DiagramV
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Features

  • Four independent differential DSI (DBUS) channels
  • Dual SPI interface
  • Enhanced bus fault performance
  • Automatic message cyclical redundancy checking (CRC) generation and checking for each channel
  • Enhanced register set with addressable buffer allows queuing of 4 independent follower commands at one time for each channel
  • 8- to 16-Bit messages with 0- to 8-Bit CRC
  • Independent frequency spreading for each channel
  • Pseudo bus switch feature on channel 0

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