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

Decision support at a digital hospital, Heart disease is the number-one kil...

Heart disease is the number-one killer in the United States, and in a cardiac crisis, each minute matters. Indiana Heart Hospital (IHH) is a new cardiac hospital that saves life b

Distinguish between min terms and max terms, Distinguish between min terms ...

Distinguish between min terms and max terms. Ans Differentiate between Minterms and Maxterms: a. Each single term in standard Sum Of Products (SOP) form is termed as minterm

Floating-point processing and instruction encoding, write a program that e...

write a program that evaluate the following arithmetic expression: ((A+B) /C) * ((D-A)+E) assign test value to the variable and display the resulting value.

How to turn on the session support in php, The session support can be turne...

The session support can be turned on automatically at the site level, or manually in every PHP page script: * Turning on session support automatically at the site level: Set s

Build data flow diagrams showing functional dependencies, Build data Flow d...

Build data Flow diagrams showing functional dependencies Data flow diagrams are very useful for showing functional dependencies. In data flow diagrams processes are indicated

Define the concept of encapsulation of OOA, Encapsulation of OOA Encap...

Encapsulation of OOA Encapsulation separates the interface of an abstraction from its implementation. By taking the above example i.e. of a car, we can now categorize them as:

What is meant by refreshing of the screen, What is meant by refreshing of t...

What is meant by refreshing of the screen?  Some method is required for maintaining the picture on the screen. Refreshing of screen is completed by keeping the phosphorus glowi

Difference among activity and sequence diagram, a. Activity diagram: Activi...

a. Activity diagram: Activity diagram is used for functional modelling. Captures the process flow. b.  Sequence diagram :  Sequence diagram is  used for dynamic modeling.

One pointer variable be subtracted from another, Under what conditions can ...

Under what conditions can one pointer variable be subtracted from another? Pointer subtraction isn't used very much, but can be handy to determine the distances between two arr

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