Illustrate control and timing signals, Computer Engineering

Assignment Help:

Q. Illustrate control and timing signals?

The requirement of I/O from different I/O devices by processor is quite unpredictable. In fact it relies on I/O needs of particular programs and generally doesn't follow any pattern. Because the I/O interfaces also shares memory and system bus for data input/output, control and timing are required to coordinate the flow of data to/from external devices from/to processor or memory. For illustration control of the transfer of data from a peripheral device to processor might include subsequent steps:

1. The processor enquires from I/O interface to check status of attached device. Status can be busy, ready or out of order.

2. I/O interface returns device status.

3. If device is operational and ready to transmit then processor requests transfer of data by a command that is a binary signal to I/O interface.

4. I/O interface attains a unit of data (for example 8 or 16 bits) from external device.

5. Data is transferred from I/O interface to processor.


Related Discussions:- Illustrate control and timing signals

What are the role of an operating system, What are the role of an operating...

What are the role of an operating system? Sharing the Processor Virtual Machine: Resource management: Memory Management

Structure of input - output interface, Q. Structure of Input - Output Inter...

Q. Structure of Input - Output Interface? Due to complexity and number of external devices that I/O interface control, there is not any standard structure of I/O interface. Let

What is a word line, What is a word line? In a memory cell, all the cel...

What is a word line? In a memory cell, all the cells of a row are linked to a common line called as word line

Example of frames format with ethernet, Compute the number of Ethernet fram...

Compute the number of Ethernet frames formed for a data of 64 KB IP packet. Following figure demonstrates the format of the Ethernet frame. Here maximum data into a frame is 15

Existential construction - artificial intelligence, The English existential...

The English existential construction involves so-called there-sentences such as these: (1)  There is a dog in the yard (2)  There were no children at the party (3)  There

Explain about batch system, Q. Explain about Batch System? A number...

Q. Explain about Batch System? A number of computer systems only did one thing at a time. They had a list of computer system can be dedicated to a single program till its c

What property of the architecture of 3g networks, Question: (a) Explain...

Question: (a) Explain how a Mobile Terminating call, from a PSTN phone, is processed in a GSM network. Illustrate your answer with a diagram. (b) Top-Net, a new telecommuni

Explain about ALU organisation, ALU ORGANISATION An ALU performs simple...

ALU ORGANISATION An ALU performs simple arithmetic and logic operation as well as shift operations. Complexity of an ALU relies on the type of instruction set for that it has b

State the term organizational structure, State the term Organizational Stru...

State the term Organizational Structure. A business organization might be structured in many various ways, depending on the environment in that this operates. There are alwa

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