Handshake packets - computer architecture, Computer Engineering

Assignment Help:

Handshake packets:

Handshake packets consist of nothing but a PID byte, and are usually sent in response to data packets. The 3 basic types are, NAK, indicating that the data cannot be retain at this time ACK, indicating that data was successfully retain and should be retried, and STALL, indicating that the device has an error and will never be able to successfully transfer data till some corrective action (e.g. device initialization) is performed.

USB 2.0 added 2 extra handshake packets called NYET which indicates that a split transaction is not still complete. A NYET packet is also used to tell the host that the receiver has accepted a data packet, but cannot accept any more for reason to buffers being full. Then the host will send PING packets and will continue along data packets once the components ACK's the PING. The other packet which is added was the ERR handshake to indicate that a split transaction failed. Only handshake packet the USB host may generate is called ACK; if it is not prepared to retain data, it should not instruct a component to send any.

 

 


Related Discussions:- Handshake packets - computer architecture

Design a 32:1 multiplexer, Design a 32:1 multiplexer using two 16:1 multipl...

Design a 32:1 multiplexer using two 16:1 multiplexers and a 2:1 multiplexer Ans. Design a 32 X 1 MUX by using two 16 X 1 MUX and one 2 X 1. Now here total 32 input lines

What are the different sections of a report, What are the different section...

What are the different sections of a report? A report is categorized into many sections: The Report header: In this you place a control which must appear only at the startin

What is backward compatible, A program is backward compatible if it can use...

A program is backward compatible if it can use files from an older version of itself. For a file saved in the program to be backward compatible, it must be possible to open the fil

Transaction, Explain Shadow Copy Scheme in detail.

Explain Shadow Copy Scheme in detail.

What are the 3 things that are needed to specify a route, 1. URL Pattern - ...

1. URL Pattern - You can contain placeholders in a URL pattern so that variable data can be passed to the request handler without having a query string. 2. Handler - The handle

Cohesion, Identify the type of cohesion in the following statements: 1. ...

Identify the type of cohesion in the following statements: 1. Compute average daily temperatures at various sites 2. Initialize sums and open files 3. Create new temperature rec

difference among primary and secondary storage device, In primary storage ...

In primary storage device the storage capacity is fixed. It has a volatile memory. In secondary storage device the storage capacity is not limited. It is a nonvolatile memory. Prim

Functions of an operating system, a) In multitasking Operating Systems, th...

a) In multitasking Operating Systems, there are two types of multitasking such as the "Preemptive Multitasking" and the "Cooperative Multitasking". Describe the two mentioned mult

Challenges in changing information technology, Q: Challenges and Prospects ...

Q: Challenges and Prospects in Changing Information Technology? There is no doubt that information technology has made significant progress during the past two decades. Modern

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