Target - data phase, Computer Engineering

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.


Data transfer signals on the PCI bus.


Read operation on the PCI Bus


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


Posted Date: 10/13/2012 7:38:33 AM | Location : United States

Related Discussions:- Target - data phase, Assignment Help, Ask Question on Target - data phase, Get Answer, Expert's Help, Target - data phase Discussions

Write discussion on Target - data phase
Your posts are moderated
Related Questions
What are the end-to-end layers of OSI structure The layers 4-7 of ISO-OSI reference model communicate with peer entities in end systems. There is not any communication with ent

Explain Sequential Sharing In this sharing method, a file can be shared by just one program at a time, i.e. file accesses by P1 and P2 are spaced out over time. A lock field ca

Q.Prove using Boolean Algebra 1. X (X+Y) = X 2. AB + AC + BC' = AC + BC' 3. (A+B+C) (A+B'+C') (A+B+C') (A+B'+C)=A 4. (A+B'+C) (AB+A'C) = (A+C) (A'+B) 5. XY + XZ + YZ

Q. Why we need parallel programming languages? The parallel programming languages are created for parallel computer environments.  These are developed either by creating new la

Q. Displays a format of floating-point number? A floating binary number +1010.001 in a 16-bit register is able to be represented in normalised form (presuming 6 bits for expone

Q. Illustrate third Generation Computers? The third generation has fundamental hardware technology: Integrated Circuits (ICs). To understand what are Integrated circuits let's

Define the Information System Growing sophistication in products and markets is driving the organisational requirement for increasing amounts of information. This req

What are the type of Internet connection When determining requirements for a VPN, carefully estimate the number of systems to be put behind the VPN, the number of concurrent u

Q. What is Synchronous message passing? In Synchronous message passing is executed on synchronous communication network.  In that case sender and receiver processes should be