Usb communication - computer architecture, Computer Engineering

Assignment Help:

Data packets:

USB communication takes the form of packets. Originally, all packets are sent from the host, using the root hub and possibly more hubs, to components. Some of those packets direct a device to send some packets in reply.

After the sync field discussed above, all packets are made of 8-bit bytes, transmitted least-significant bit first. First byte is a packet identifier (PID) byte. The PID is in fact 4 bits; the byte consists of the 4-bit PID followed by its bitwise complement. It redundancy helps detect errors. (Note that a PID byte contains at most 4 consecutive 1 bits, and consequently will never require bit-stuffing, even when combined with the last 1 bit in the sync byte. though, trailing 1 bits in the PID may need bit-stuffing within the first few bits of the payload.)

1173_USB communication.png

 


Related Discussions:- Usb communication - computer architecture

Differences between flexgrid control and dbgrid control, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What do you mean by e-brokerage, What do you mean by e-brokerage? E-bro...

What do you mean by e-brokerage? E-brokerage is an investment house which permits you to buy and sell stocks and acquire investment information through its Web site. E-comme

Online Library management system, Please help me to do mini Project about t...

Please help me to do mini Project about this by creating simple front and back end by using html and css and any programming language like python,php to connect those front end and

Determine flip-flops that are required for mod–16 counter, How many Flip-Fl...

How many Flip-Flops are required for mod-16 counter? Ans. 4 flip-flops is required for Mod-16 Counter. For Mod-m Counter, we require N flip-flops where N is selected to be the

Explain remote procedure call, Explain Remote Procedure Call. RPC (Remo...

Explain Remote Procedure Call. RPC (Remote Procedure Call) : The facility which was created to help the programmers write client -server software is termed as Remote Procedu

Determine the implementation of jit inventory system, Discuss in detail the...

Discuss in detail the features, benefits and implementation of JIT inventory system. JIT - Just in Time inventory systems - meaning, origin, need for JIT, benefits, Use of JIT

Explain about integration levels, Q. Explain about Integration Levels? ...

Q. Explain about Integration Levels? Initially only few gates were integrated consistently on a chip. This initial integration was termed as small-scale integration (SSI). With

Engineering and scientific software, Engineering and Scientific Software ...

Engineering and Scientific Software Engineering  and  Scientific  software  has  been  characterized  with "number crunching" algorithms. Application starts from astronomy t

Explain advantages and disadvantages of macro pre-processor, What are the a...

What are the advantages and disadvantages of macro pre-processor? Advantages Any of existing conventional assembler can be improved in this way to incorporate macro proces

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd