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?