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

State about the logic micro-operations, State about the Logic Micro-operati...

State about the Logic Micro-operations These operations are performed on binary data stored in register. For a logic micro-operation each bit of a register is treated as a diff

Calculate number of trunks for time multiplexed space switch, Calculate the...

Calculate the number of trunks that can be supported on a time multiplexed space switch given that, 32 channels are multiplexed in each stream, while the control memory access time

Explain the differences between logical and physical address, Explain the d...

Explain the differences between Logical and physical address space Logical Vs physical address space (1) An address produced by the CPU is commonly referred to like a logica

Transport layer, time to left (TTL) in transport layer

time to left (TTL) in transport layer

Explain tabulation method for simplifying k maps, Explain Tabulation Method...

Explain Tabulation Method for simplifying k maps? The Tabulation Method (QUINE-McCLUSKEY MINIMIZATION) An expression is represented in the canonical SOP form if not

Show a string in assembly language, Q. Show a string in assembly language? ...

Q. Show a string in assembly language? MOV AH, 09H MOV DX, OFFSET   BUFF INT    21H Here data in input buffer stored in data segment is intended to be displayed on mo

Project cost, I need help in my M.Sc project ,but im wondering how the cost...

I need help in my M.Sc project ,but im wondering how the cost is calculated

Find the minimum sop and pos expression, Find the minimum SOP and POS expre...

Find the minimum SOP and POS expression for the following functions using Karnaugh Map and realize the expression using appropriate gates. Also realize SOP form using NAND-to-NAND

Explain the importance of search engines, Explain the importance of Search ...

Explain the importance of Search Engines The most effective way of finding information on the internet is to use a search engine. Though, it's just as easy to use these ineffic

Define the addressing modes, Q. Define the ADDRESSING MODES? The elemen...

Q. Define the ADDRESSING MODES? The elementary set of operands in 8086 can reside in memory, register and immediate operand. How can these operands be retrievedby various addre

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