1.
Team Emertxe
Communication Protocols 1

2.
Communication Protocols I
●
Introduction
● UART
●
SPI
●
I²C

3.
Introduction

4.
Introduction
●
What do mean by Communication?
● Mode of Communications
●
Type of Communications
●
Why Protocols?

5.
Introduction
Modes of Communication
●
Simplex
● Half Duplex
● Duplex

6.
UART

7.
UART

8.
Serial Peripheral Interface

9.
Serial Peripheral Interface
●
Introduction
● Interface
●
Hardware Configurations
●
Data Transmission
– Data Validity

10.
SPI
Introduction
●
Synchronous
●
Full Duplex
●
Master / Slave

11.
SPI
Interface
●
SCLK
●
MOSI
●
MISO
● nSS

12.
SPI
Hardware Configuration

13.
SPI
Hardware Configuration

14.
SPI
Hardware Configuration

15.
SPI
Data Transmission

16.
SPI
Data Transmission

17.
SPI
Data Transmission

18.
SPI
Data Transmission

19.
SPI
Data Transmission

20.
SPI
Data Transmission

21.
SPI
Data Transmission

22.
SPI
Data Transmission

23.
SPI
Data Transmission

24.
SPI
Data Validity

25.
Inter Integrated Circuits

26.
●
Introduction
●
Bus Features
●
The Protocol
● Bus Speeds
Inter Integrated Circuits

27.
●
Synchronous
● Half Duplex
●
Multi Master / Slave
I2
C
Introduction

28.
●
Two Line Interface
● Software Addressable
●
Multi Master with CD
●
Serial, 8 bit Oriented, Bidirectional with 4 Modes
●
On Chip Filtering
I2
C
Bus Features

29.
●
Example
● Signals
●
A Complete Data Transfer
I2
C
Protocol

30.
I2
C
Example

31.
●
Two-wired Interface
– SDA
– SCL
● Wired-AND
● Conditions and Data Validity
● Transmission
I2
C
Signals

32.
I2
C
Signals – Wired-AND

33.
I2
C
Signals – Conditions and Data Validity

34.
I2
C
Signals – Transmission
●
Data on SDA
● Clocking on SCL
●
Clock Synchronization
●
Data Arbitration

35.
I2
C
Signals – Data on SDA

36.
I2
C
Signals – Data on SDA

37.
I2
C
Signals – Data on SDA

38.
I2
C
Signals – Data on SDA

39.
I2
C
Signals – Data on SDA

40.
I2
C
Signals – Clocking on SCL

41.
I2
C
Signals – Clock Synchronization

42.
I2
C
Signals – Data Arbitration

43.
I2
C
A Complete Data Transfer

44.
I2
C
Bus Speeds
●
Bidirectional Bus
– Standard Mode - 100 Kbit/s
– Fast Mode - 400 Kbits/s
– Fast Mode Plus - 1 Mbits/s
– High Speed Mode - 3.4 Mbits/s
●
Unidirectional Bus
– Ultra Fast Mode – 5 Mbits/s
● Uses Push-Pull Drivers (No Pullups)

45.
Thank You