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EECS 373 Design of Microprocessor-Based Systems Prabal Dutta University of Michigan

EECS 373 Design of Microprocessor-Based Systems Prabal Dutta University of Michigan Lecture 10: Serial buses Oct 7, 2010. Announcements. Homework #1 Due now ABET procedure. External memory attaches to the processor via the external memory controller and bus. Atmel SAM3U. Outline.

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EECS 373 Design of Microprocessor-Based Systems Prabal Dutta University of Michigan

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  1. EECS 373 Design of Microprocessor-Based Systems Prabal Dutta University of Michigan Lecture 10: Serial buses Oct 7, 2010

  2. Announcements • Homework #1 • Due now • ABET procedure

  3. External memory attaches to the processor via the external memory controller and bus Atmel SAM3U

  4. Outline • Minute quiz • Announcements • UART • SPI • I2C

  5. DB9 pinout of a DTE • DTE vs DCE • Pinout of a DCE? • Common ground? • Noise effects?

  6. RS-232 transmission example How do peers agree on timing?

  7. SPI bus architecture • Shared bus • SCK • MOSI • MISO • Chip selects

  8. SPI bus architecture • Compact shared bus • SCK • MOSI • MISO • Chip selects

  9. SPI peripheral example

  10. I2C bus architecture • I2C • Standardizes peripheral classes • SCK, SDA • Philips/NXP

  11. I2C bus transactions: start and stop conditions

  12. I2C bus transactions: data transfer

  13. Questions? Comments? Discussion?

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