Universal Serial Bus (USB) is an industry standard that defines cables, connectors and communication protocols for connection between computers and electronic devices. There are multiple USB standards, including USB 1.0, 2.0, and 3.0. The key USB components are the host controller, hubs, cables and peripheral devices. USB uses a tiered star topology to connect up to 127 devices and supports various transfer types. Descriptors contain device information and reside in non-volatile storage. Wireless USB builds on wired USB to enable wireless connectivity using ultra-wide band technology.
Universal Serial Bus (USB) is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic devices
Universal Serial Bus (USB) is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic devices
MIPI DevCon 2016: A Developer's Guide to MIPI I3C ImplementationMIPI Alliance
In this presentation, Intel's Ken Foust, MIPI Sensor Working Group Chair, provides early adopters of MIPI I3C with targeted guidance on how to ensure a successful and efficient implementation of MIPI I3C in their products.
Leveraging I2C as a foundation, many components of MIPI I3C will be familiar to implementers, but with guidance provided here, viewers will gain a clearer understanding of MIPI I3C’s new innovative features, how they will improve their systems, and what considerations should be made to fully leverage them.
This presentation discusses the details of the I2C protocol and interfacing of EEPROM with 8051 based on I2C protocol. It also discusses the other applications of I2C protocol
Serial Peripheral Interface (SPI) is an interface bus commonly used to send data between microcontrollers and small peripherals such as shift registers, sensors, and SD cards.
MIPI DevCon 2016: A Developer's Guide to MIPI I3C ImplementationMIPI Alliance
In this presentation, Intel's Ken Foust, MIPI Sensor Working Group Chair, provides early adopters of MIPI I3C with targeted guidance on how to ensure a successful and efficient implementation of MIPI I3C in their products.
Leveraging I2C as a foundation, many components of MIPI I3C will be familiar to implementers, but with guidance provided here, viewers will gain a clearer understanding of MIPI I3C’s new innovative features, how they will improve their systems, and what considerations should be made to fully leverage them.
This presentation discusses the details of the I2C protocol and interfacing of EEPROM with 8051 based on I2C protocol. It also discusses the other applications of I2C protocol
Serial Peripheral Interface (SPI) is an interface bus commonly used to send data between microcontrollers and small peripherals such as shift registers, sensors, and SD cards.
2. Introduction
Universal Serial Bus (USB) is an industry standard
Developed that defines the cables, connectors and
communications protocols used in a bus for connection,
communication and power supply between computers and
electronic devices.
4. Components of USB system
• USB host controller
• USB hub
• USB cable
• USB peripheral devices
5. USB host controller
• It is an interface that allows an enabled piece of hardware
to interact and communicate with a particular piece of
software.
• USB host controller is a card that easily installs into any
available slot in the motherboard.
• The back-facing plate of the controller provides two or
more USB ports.
6. USB hubs
• A USB hub is a device that expands a single USB port
into several so that there are more ports available to
connect devices to a host system
• A USB hub is a small, light unit with multiple ports for
plugging in USB devices.
7. PEHRIPHERAL DEVICES
• A peripheral is a device that is connected to a
host computer , but not part of it.
• It expands the host's capabilities but does not form part of
the core computer architecture.
• Ex.- Mouse,keyboard,Printer
8. USB TOPOLOGY
• USB elements connected via a tiered star topology.
• It supports up to 127 devices.
11. USB PACKETS
• USB data travels in packets
• Identified by “Packet ID” (PID)
• Token packet tells what’s coming
• Data packets deliver bytes
• Handshake packets report success or failure
13. USB DESCRIPTORS AND TYPES
• USB descriptors keep every information about the device.
• Descriptors typically reside in non-volatile data storage on the
device.
• Device descriptor
• Configuration descriptor
• Interface descriptor
• Endpoint descriptor
15. Device descriptor
• USB devices can only have one device descriptor.
• The device descriptor includes information such as what
USB revision the device complies to, the Product and
Vendor IDs.
• The number of possible configurations the device can
have.
16. Interface descriptor
• The interface descriptor could be seen as a header or
grouping of the endpoints into a functional group
performing a single feature of the device.
• There is no limitation as to having only one interface
enabled at a time.
19. Difference between RS232 and USB
USB RS232
• RS232 has many pins and
• In usb only 4 to 5 pins
then it is again divided
are there.
into male and female
• USB ports are compact in pins.
size.
• RS232 is bulky and cover
• USB speed is now more space.
increase upto 5 gbps.
• RS232 spped
• USB supports plug and aproximately is 10 Mbps.
play feature.
• RS232 USES UART
COMMAND
20. ADVANTAGES OF USB
• Ease of use
• One interface for many devices
• Automatic configuration
• No user settings
• Speed
• Reliability
• Low cost
• Low power consumption
21. WIRELESS USB
• Wireless USB will build on the success of wired USB,
bringing USB technology into the wireless future.
• Wireless USB is a short-range, high-bandwidth wireless
radio communication protocol created by the wireless
USB promoter group.
• The basic transport mechanism for Wireless USB is the
ultra-wide band (UWB) radio platform.
23. FEATURES OF ULTRA WIDE BAND
• Speed/Range-Scaleable speeds up over 1 Gbps
• Currently 480 Mbps at 3 m; 110 Mbps at 10 m
• Frequency: 3.1 GHz to 10.6 GHz
• Divided into 14 bands; 5 group
• Each band is 528 MHz wide
• OFDM symbols are interleaved across all bands
• Provides protection against multi-path / interference
24. USB Flash drives
• A Flash Drive is a type of portable USB drive that stores and
transfers data located on your computer working similar to
floppies in that information can be stored and written on them.
• This device enables you to read , write , copy, delete and move
data from USB flash drives to your hard disk drive and back
again.
25. ADVANTAGES OF WIRELESS USB
• It is the easy and secure from plugging it in / unplugging it
• You do not need to have a network cable between the device
and the network.
• You can connect fairly easily at home, work, multiple offices.
• You can move around or work at any available or suitable
location without having to be near a socket.
26. DISADVANTAGE OF WIRELESS USB
• Unless the security is not properly setup, both your laptop
or desktop and the network you are connecting to cannot
be compromised and your data can be accessed by
others.
• The hardware is small, it can get damaged, lost or stolen.
• Some older wireless networks can get very slow if there
are lots of people in the same area, all trying to use the
network (
27. APPLICATIONS OF WIRELESS USB
• Game consoles
• Digital cameras
• Digital camcorders
• DVD players
• Printers
• Scanners
• Projectors