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

Computer, is data bus is bidirectional

is data bus is bidirectional

Assignment, zero, one, two three address instructions

zero, one, two three address instructions

What is tape backup, Q. What is Tape Backup? Magnetic tapes are used th...

Q. What is Tape Backup? Magnetic tapes are used these days in computers for the below purposes: Backing up data stored in disks. It is essential to regularly save data s

Performance instrumentation, The performance instrumentation states on how ...

The performance instrumentation states on how to efficiently gather information about the computation of the parallel computer. The process of instrumentation mainly attempts to ca

Inspirations of artificial intelligence, Inspirations of artificial intelli...

Inspirations of artificial intelligence: Artificial Intelligence research can be easily understood by following example in terms of how the following question has been answere

Essential features of an algorithm, Necessary features of an algorithm: ...

Necessary features of an algorithm: 1.Input: The algorithm should take zero or more input. 2. Output: The algorithm should generate one or more outputs.  3. Definiteness:

Explain the working of a binary counter, In binary counter the flip flop of...

In binary counter the flip flop of lowest order position is complemented with each pulse. This means that JK input position must be maintained with logic one

Explain management information base variables, Explain MIB (Management Info...

Explain MIB (Management Information Base) variables. MIB is a set of named items which an SNMP agent knows. To control or monitor a remote computer, a manager should fetch or s

Output comparators, Output comparators are used in  Theses are used in ...

Output comparators are used in  Theses are used in Dynamic testing of single and multiple module.

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