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

With respect to security which is the better .net or j2ee, With respect to...

With respect to security, which one is the better choice?.Net or J2EE? Explain? As per majority programmers .NET is the best one which have one vendor compare to, the ease of

Assembler, Assembler: Typically a modern assembler makes object code b...

Assembler: Typically a modern assembler makes object code by translating assembly instruction into op codes, & by resolving symbolic names for memory locations and any other e

System analysis and design, write an algorithm on railway reservation ticke...

write an algorithm on railway reservation ticket window

State the term- $display and $write, State the term- $display and $write ...

State the term- $display and $write $display and $write two are the same except which $display always prints a newline character at the end of its execution.

What is linked list, Q. What is Linked List? A linked list is a data st...

Q. What is Linked List? A linked list is a data structure formed by zero or more nodes linked by pointers. Every node has two parts as shown in Figure below. One of them is inf

Explain process control block, Explain Process Control Block Process Co...

Explain Process Control Block Process Control Block (PCB): Information related with every process is stored in Process control Block. a) Process state b) Program counter c

How many tables can an append structure be assigned, To how many tables can...

To how many tables can an append structure be assigned. One table can be assigned to append structure.

Compare excess 3 codes and gray code, Compare excess 3 codes and gray cod...

Compare excess 3 codes and gray code. Ans. Excess 3 Codes 1. This is the other form of BCD code. All decimal digits are coded in 4 bit binary code. 2. The code

What is multiplicity, What is multiplicity? Multiplicity is applied to ...

What is multiplicity? Multiplicity is applied to attributes for data base application. Multiplicity for an attribute specifies the number of possible value for every instantiat

Measuring and improving cache performance, Measuring and Improving Cache Pe...

Measuring and Improving Cache Performance: 1. Reduce the possibility that 2 different memory block will contend for the similar cache location 2. Additional cache levels

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