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

Write the truth table to realize the function nand gate, For F = A.B.C +...

For F = A.B.C + B.C.D ‾ + A ‾.B.C, write  the  truth  table to realize the function using NAND gates only ? Ans. Logic Function given as F = ABC + BC‾D + A‾BC, simplification o

Scsi bus - computer architecture, SCSI Bus:   Defined by ANSI - X3....

SCSI Bus:   Defined by ANSI - X3.131   50, 68 or 80 pins   Max. transfer rate - 160 MB/s, 320 MB/s. SCSI Bus Signals   Small Computer System Interface

Determine the nand gate, If  the input to T-flipflop is 100 Hz signal, the ...

If  the input to T-flipflop is 100 Hz signal, the final output of the three T-flipflops in cascade is ? Ans. The  final  output  of  the  three  T-flip-flops in cascade is 12

Program that will blink as led, Take the last two digits of your UTCID. Thi...

Take the last two digits of your UTCID. This is your duty cycle in percent. If your duty cycle is less than 10%, add 30 to your number. Create an assembly program that runs on t

What is the accessibility testing, Accessibility testing for web sites is a...

Accessibility testing for web sites is a service that can give much more than the standard point-by-point testing methods of most automated services.

Explain call and return statements, Q. Explain Call and Return Statements? ...

Q. Explain Call and Return Statements? CALL:       CALL X    Procedure Call to procedure/function named X   CALL instruction causes the following to happen:  1.  Decre

Difference between the real mode and the protected mode, Problem (a) ...

Problem (a) Explain the difference between the real mode and the protected mode in the 80x86 family of processors. (b) The 32-bit physical address 047C:0048 is to be conv

What is internet address, Addresses are basically for virtually everything ...

Addresses are basically for virtually everything we do on Internet. The IP in TCP/IP is a mechanism for providing addresses for computers on Internet. Internet addresses have two f

What is random access memory, What is random access memory(RAM or MAIN MEMO...

What is random access memory(RAM or MAIN MEMORY) and mention its types? The main memory in the central storage unit in a computer system. It is relatively large and fast memory

How can we access the correction and transport system, How can we access th...

How can we access the correction and transport system? Each time you make a new object or change an existing object in the ABAP/4 Dictionary, you branch automatically to the W

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