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

Benefits of traditional hard disks and cd-rom, Q. Benefits of traditional h...

Q. Benefits of traditional hard disks and CD-ROM? CD-ROM is suitable for distribution of large amounts of data to a large number of users. CD-ROMs are a general medium these da

Page directive include, What is the difference between, page directive incl...

What is the difference between, page directive include, action tag include? Ans) One difference is whereas using the include page directive, in translation time it is making t

Define is a personality, Define is a Personality. In order to allow pro...

Define is a Personality. In order to allow programs coming other operating system to be run in Linux, Linux supports the idea of personalities. Every method is assign to an imp

Are there standards for electronic imaging, Are there standards for electro...

Are there standards for electronic imaging? Given the sensitive nature of most permanent records, there are microphotography standards in place which contain microfilm, compute

Message passing programme development environment, In a multicomputer syste...

In a multicomputer system the computational load amid different processors should be balanced.  To pass information between different nodes message passing technique is used. The p

Determine the example of timescale, Determine the Example of timescale ...

Determine the Example of timescale 'timescale 10ns / 1ps Indicates delays are in 10 nanosecond units with 3 decimal points of precision (1 ps is 1/1000ns which is .001 ns).

Convert following decimal numbers into 9s & 10s complement, Q. Convert the ...

Q. Convert the following decimal numbers into 9s & 10s complement: 1) 3654 2) 99 3) 18.293 Q. Convert the following binary numbers into 1s& 2s complement: 1) 1101

Explain about wide area network, Q. Explain about Wide Area Network? Wi...

Q. Explain about Wide Area Network? Wide Area Network (WAN) usually refers to a network, which covers a large geographical area as well as use communications subnets (circuits)

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