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

Form an 8 bit adder using 2 four bit adder IC's 7483, How will you form an ...

How will you form an 8 bit adder using 2 four bit adder IC's 7483? Ans: 4 bit adder IC is IC 7483. This has two four bit data inputs and output carry, 4 bit data output carr

What is an operating system, What is an operating system? An operating...

What is an operating system? An operating system is system software which provides interface between hardware and user. The operating system gives the means for the proper uti

Knowledge representation - artificial intelligence, Knowledge Representatio...

Knowledge Representation: To recap, we now have some characterizations of "AI", that when an "AI" problem arises, you will be able to put all into context exactly, find the co

Central processing unit - computer architecture, Central processing unit (C...

Central processing unit (CPU) : The part of the computer which executes program instructions is known as the processor or central processing unit (CPU). CPU is over single ele

..binary tree, draw a binary tree from its inorder and preorder traversal s...

draw a binary tree from its inorder and preorder traversal sequences given as follows: inorder: d b g e h a c n f preorder: a b d e g h c f n

Name the switching schemes used in a digital exchange, Name the switching s...

Name the switching schemes used in a digital exchange? The several switching systems used are:  1. Strowger Switching System 2. Cross bar Switching. 3. Electronic Swit

What are common reason for error massages while copying file, Q. What are c...

Q. What are common reason for error massages while copying file? While copying files with copy, DOS in encounters any error, it displays a suitable error massage. The common re

Data routing functions-network properties, Data Routing Functions The d...

Data Routing Functions The data routing functions are the functions which when implemented  the path among the source and the objective. In dynamic interconnection networks the

What is the use of object factories, Factory methods that will be used to m...

Factory methods that will be used to make objects just like in a static way.

Use verilog function to define the width of a multi-bit port, Can I use a V...

Can I use a Verilog function to define the width of a multi-bit port, wire, or reg type? Width  elements  of  ports,  wire  or  reg  declarations  require  a  constant  in  bot

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