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

Write short note on code optimization, Write short note on code optimizatio...

Write short note on code optimization. Code optimization: It is the optional phase designed to enhance the intermediate code therefore the Ultimate object program runs quicke

Define the aims of program generation activity, Program generation activity...

Program generation activity aims at? Ans. At automatic generation of program the program generation activity aims.

Computer Architecture, can u please tell me the assembly language program f...

can u please tell me the assembly language program for carry look ahead adder that can run in 8086 emulator?? its urgent

Computer aided manufacture, Before we take a detailed look about software l...

Before we take a detailed look about software languages, let us consider the role of computers in engineering. Computers are commonly used in the areas of 'Computer Aided Design /

Explain register addressing mode, Q. Explain Register Addressing Mode? ...

Q. Explain Register Addressing Mode? Operand can be a 16-bit register: Addressing Mode Description Example AX, BX, CX, DX, SI,

Function wallsintact, We also need to know, given a cell, which of its neig...

We also need to know, given a cell, which of its neighbours has all of its walls intact. Write the function wallsintact that accepts the grid and a list of neighbouring cells and r

Describe clusters in cellular systems, Question: a) With the help of a...

Question: a) With the help of a diagram, describe clusters in cellular systems. b) Describe the role of the following components in the GSM architecture Radio Sub-Sy

Isoquants, what are the types of isoquants

what are the types of isoquants

How branching takes place in instruction pipeline, How branching takes plac...

How branching takes place in Instruction pipeline. Explain with suitable examples

Illustrate basic strategy used in raid, Q. Illustrate Basic strategy used i...

Q. Illustrate Basic strategy used in RAID? Basic strategy used in RAID is to replace large capacity disk drive with multiple smaller capacity disks. Data on these disks is dist

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