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Serial Protocol Fundamentals

This video introduces the basic concepts behind serial protocols and provides a detailed technical introduction to the three most common low-speed serial protocols: UART, I2C, and SPI. In addition to explaining each protocol’s lines, frame structure, and timing, this webinar also explains the similarities and differences between these three fundamental serial protocols. Learn more about Rohde & Schwarz Oscilloscopes: http://rsna.us/6057ohYlF Timeline: 00:00 Introduction 00:05 Presentation outline 00:26 Parallel transmission 01:36 Serial transmission 02:26 About protocols 03:16 Analyzing and decoding serial protocols 04:26 Common serial protocols 05:38 About UART 06:38 About asynchronous operation 07:51 UART frame format 08:40 Start and stop bits 09:29 Data bits 10:16 Parity bit (optional) 11:24 UART summary 12:25 About I2C 13:08 Basic I2C topology 13:49 Overview of I2C frames 14:30 Start condition 15:33 Slave address 16:25 Aside: timing relationship between SDA and SCL 17:05 Read / write bit 17:40 Ack(nowledge) bit 18:31 Data byte(s) 19:07 Multiple data bytes 19:50 Stop condition 20:40 About “open drain” 21:29 Pull up resistor values 22:15 Modes / speeds 23:16 I2C summary 24:19 About SPI 25:15 Basic SPI components / nomenclature 26:02 Overview of SPI protocol 26:39 About CS 27:33 About SCLK