Target - data phase, Computer Engineering

Assignment Help:

Target abort -computer architecture:

Usually, a target holds DEVSEL# asserted through the final data phase. However, if a target desserts DEVSEL# before disconnecting without data (asserting STOP#), it indicates a target abort, which is a fatal error condition. The initiator may not retry, and usually treats it as a bus error. Note that a target may not dessert DEVSEL# as waiting with TRDY# or STOP# low; it have to do this at the starting of a data phase. After observing STOP#, the initiator will terminate the transaction at the next legal chance, but if it has already signaled its wish to continue a burst (by asserting IRDY# without deserting FRAME#), it is not allowed to dessert FRAME# till the following data phase. A target that requests a burst end (asserting STOP#) can have to wait through another data phase (holding STOP# asserted without TRDY#) before the transaction can stop.

60_Target.png

Data transfer signals on the PCI bus.

550_Target1.png

Read operation on the PCI Bus

2425_Target2.png

Read operation showing the role of the TRDY #, IRDY #

 


Related Discussions:- Target - data phase

What is the meaning of aliasing, a. What is the meaning of aliasing? What a...

a. What is the meaning of aliasing? What are its drawbacks? Describe a method to remove aliasing, using post filtering. b. How can you copy a Pixmap from one place to another

Flynns categorization, Flynn's Categorization Flynn's Categorization is...

Flynn's Categorization Flynn's Categorization is based on multiplicity of data streams and instruction streams observed by CPU at the time of program execution. Let I s and D

Database system, What are the three data anomalise that are likely to occur...

What are the three data anomalise that are likely to occur as a result of data redundancy?

Find the shortest path, The following is the required interface for the mou...

The following is the required interface for the mouse and cheese problem. Your program is required to read its input from a file named 'maze.txt' In the maze.txt

System software, define the properties of interactive operating systems

define the properties of interactive operating systems

Determine the advantages of sixth generation computers, Determine the advan...

Determine the advantages of sixth generation computers One of the major dramatic changes in sixth generation will be the explosive growth of wide area networking. Network bandw

Problem context and specification, Problem Context and Specification : ...

Problem Context and Specification : However the development of Inductive Logic Programming has been heavily formal in mathematical in nature it means the major people in the f

Differentiate between hardware and software, Differentiate between Hardware...

Differentiate between Hardware and Software Another classification is software vs. hardware. Hardware is the collection of physical components, like chips, wires, PCBs, connect

Iterative deepening search, Iterative Deepening Search: So, breadth fi...

Iterative Deepening Search: So, breadth first search is always guaranteed to find a solution (if one exists), actually it eats all the memory. For the depth first search, ther

calculates the area and perimeter of a rectangle, Write a program, using f...

Write a program, using functions, that calculates the area and perimeter of a rectangle whose dimensions (Length & width) are given by a user.

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