Low Power UART Design for Serial Data Communication
#1

Definition

With the proliferation of portable electronic devices, power efficient data transmission has become increasingly important. For serial data transfer, universal asynchronous receiver / transmitter (UART) circuits are often implemented because of their inherent design simplicity and application specific versatility. Components such as laptop keyboards, palm pilot organizers and modems are few examples of devices that employ UART circuits. In this work, design and analysis of a robust UART architecture has been carried out to minimize power consumption during both idle and continuous modes of operation.

UART

An UART (universal asynchronous receiver / transmitter) is responsible for performing the main task in serial communications with computers. The device changes incoming parallel information to serial data which can be sent on a communication line. A second UART can be used to receive the information. The UART performs all the tasks, timing, parity checking, etc. needed for the communication. The only extra devices attached are line driver chips capable of transforming the TTL level signals to line voltages and vice versa.

To use the device in different environments, registers are accessible to set or review the communication parameters. Setable parameters are for example the communication speed, the type of parity check, and the way incoming information is signaled to the running software.


UART types

Serial communication on PC compatibles started with the 8250 UART in the XT. In the years after, new family members were introduced like the 8250A and 8250B revisions and the 16450. The last one was first implemented in the AT. The higher bus speed in this computer could not be reached by the 8250 series. The differences between these first UART series were rather minor. The most important property changed with each new release was the maximum allowed speed at the processor bus side.

The 16450 was capable of handling a communication speed of 38.4 kbs without problems. The demand for higher speeds led to the development of newer series which would be able to release the main processor from some of its tasks. The main problem with the original series was the need to perform a software action for each single byte to transmit or receive. To overcome this problem, the 16550 was released which contained two on-board FIFO buffers, each capable of storing 16 bytes. One buffer for incoming, and one buffer for outgoing bytes.
Reply
#2

need more information please sent it
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: uart verilog code pdf, pda with serial port, annamalai serial wiki, serial data transfer ppt, uart design using vhdl, serial ata specification, video interviews of serial,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  Block Chain and Data Science jntuworldforum 0 7,962 06-10-2018, 12:15 PM
Last Post: jntuworldforum
  Data Encryption Standard (DES) seminar class 2 9,334 20-02-2016, 01:59 PM
Last Post: seminar report asees
  Skin Tone based Secret Data hiding in Images seminar class 9 6,981 23-12-2015, 04:18 PM
Last Post: HelloGFS
  Mobile Train Radio Communication ( Download Full Seminar Report ) computer science crazy 10 27,940 01-05-2015, 03:36 PM
Last Post: seminar report asees
  Mobile Train Radio Communication Electrical Fan 5 14,707 11-03-2015, 07:27 PM
Last Post: Guest
Brick XML Data Compression computer science crazy 2 2,379 07-10-2014, 09:26 PM
Last Post: seminar report asees
  Data Security in Local Network using Distributed Firewalls computer science crazy 10 14,791 30-03-2014, 04:40 AM
Last Post: Guest
  GREEN CLOUD -A Data Center Approach computer topic 0 1,530 25-03-2014, 10:13 PM
Last Post: computer topic
  3D-OPTICAL DATA STORAGE TECHNOLOGY computer science crazy 3 8,502 12-09-2013, 08:28 PM
Last Post: Guest
  Security in Data Warehousing seminar surveyer 3 9,838 12-08-2013, 10:24 AM
Last Post: computer topic

Forum Jump: