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

Social media strategy design, For this phase of the project you are require...

For this phase of the project you are required to formulate a social media strategy for a product/service/business/concept/charity...etc. the strategy can include technologies such

Explain new services of cpu based exchange, Explain new services of  CPU B...

Explain new services of  CPU Based Exchange. These new services are termed as supplementary services and several of the prominent ones are given below as:  Category 1:

Reprography of information distribution, Reprography In order to dissem...

Reprography In order to disseminate information widely some method of reprography is invariably used. Reprography is the science and practice of copying documents by photograph

Transaction, Explain Shadow Copy Scheme in detail.

Explain Shadow Copy Scheme in detail.

What are the advantages and disadvantages of a smart card, What are the adv...

What are the advantages and disadvantages of a Smart Card?    Advantages of Smart Card: 1. It gives convenience & support for multiple currencies over borders. 2. Used

Convert following decimal numbers into 9s & 10s complement, Q. Convert the ...

Q. Convert the following decimal numbers into 9s & 10s complement: 1) 3654 2) 99 3) 18.293 Q. Convert the following binary numbers into 1s& 2s complement: 1) 1101

What is branch target, What is branch target? As a result of branch ins...

What is branch target? As a result of branch instruction, the processor fetches and implements the instruction at a new address called as branch target, instead of the instruct

What is imprecise and precise exception, What is imprecise and precise exce...

What is imprecise and precise exception? Situation in which one or more of the succeeding instructions have been implemented to completion is known as imprecise exception. Situ

Calculate traffic offered in erlangs in a particular exchang, In a particul...

In a particular exchange during busy hour 1200 calls were offered to a group of trunks, during this time 6 calls were lost. The average call duration being 3 minutes Calculate Traf

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