Split bus operation - universal serial bus , Computer Engineering

Assignment Help:

Split Bus Operation - universal serial bus :

 

234_Split Bus Operation.png

USB 2.0 devices utilize a special protocol in the reset time that is called "chirping", to negotiate the high speed mode having the host/hub. A component that is HS capable first connects as an FS components (D+ pulled high), but upon retaining a USB RESET (both D+ and D- driven LOW by host for 10 to 20 mS) it pulls the D- line high which is known as chirp K. it indicates to the host that the device is high speed. If the host/hub is also HS capable then it chirps (returns alternating K and J states on D+ and D- lines) letting the components know that the hub will operate at high speed. The device has to retain at least 3 sets of KJ chirps before it changes to high speed terminations and start high speed signaling. Because USB 3.0 use wiring separately and in additional to that used by USB 2.0 and USB 1.x  that type of speed negotiation is not needed. Clock tolerance power is 480.00 Mbit/s ±500 ppm, 12.000 Mbit/s ±2500 ppm, 1.50 Mbit/s ±15000 ppm.

While high speed components are commonly referred to as "USB 2.0" and advertised as "up to 480 Mbit/s", not all USB 2.0 are high speed components. The USB-IF certifies devices and provides licenses to use special marketing logos for either high speed or basic speed (low and full) after passing a compliance test and paying a licensing fee. All of the devices are tested according to the latest specification, so newly-compliant low speed devices are also 2.0 devices.


Related Discussions:- Split bus operation - universal serial bus

Explain the language processors, Name the language processors are? Asse...

Name the language processors are? Assembler, Compiler and Interpreter are the language processors.

Explain opening files for reading only in c, Opening Files for Reading Only...

Opening Files for Reading Only     : A data file is a file that you can open and read its contents visually - for example, C source files, .dat files, HTML etc - anything that look

What is linear bounded automation, What is linear bounded automation?  ...

What is linear bounded automation?   A linear bounded automation is restricted type of Turing machine where in the tape head isn't permitted to move off the portion of the tape

Write an awk program - unix , Write an AWK program which takes the followin...

Write an AWK program which takes the following input file and processes it. $cat data.txt John Do 111-1111 English 90 Maths 80 Alice Do 222-2222 English 90 Maths 90 Chemistry 93

Describe collective communications, Q. Collective Communications? A num...

Q. Collective Communications? A number of message-passing systems allow communication involving more than two processors. Such type of communication can be known as collective

Explain compiler, What is compiler? A system software program known as ...

What is compiler? A system software program known as a compiler translates the high-level language program into a suitable machine language program having instruction such as t

Collective communications - broadcast, Q. Collective Communications - Broad...

Q. Collective Communications - Broadcast? Broadcast: Broadcasting can be done in two ways one of them is one to all and another one is all to all. In the matter of one to all b

EME, How can i made Carnot engine

How can i made Carnot engine

Which way do twin twist props on a boat rotate, Q. Which way do twin twist ...

Q. Which way do twin twist props on a boat rotate when propelling the boat forward? Answer:- In opposite direction however they are designed to propel the boat forward eve

Create a social network application, A software development company wants t...

A software development company wants to create a social network application where users can post brief audio messages giving their thoughts. Each user of the application will ha

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