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DMA Controller


Posted by: seminar class
Created at: Thursday 21st of April 2011 11:53:35 PM
Last Edited Or Replied at :Friday 30th of November 2012 01:17:30 AM
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ce or destination is in memory, then the address is au..................[:=> Show Contents <=:]



ppt presentation on 8237 dma controller


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Created at: Thursday 29th of November 2012 11:00:51 AM
Last Edited Or Replied at :Friday 30th of November 2012 01:17:27 AM
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8237 dma cantroller :pin diagram,workin..................[:=> Show Contents <=:]



DIRECT MEMORY ACCESS details


Posted by: seminar paper
Created at: Wednesday 14th of March 2012 04:59:28 AM
Last Edited Or Replied at :Wednesday 14th of March 2012 04:59:28 AM
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t also interacts with the CP..................[:=> Show Contents <=:]



DMA Controller


Posted by: seminar class
Created at: Thursday 21st of April 2011 11:53:35 PM
Last Edited Or Replied at :Friday 30th of November 2012 01:17:30 AM
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bout 2 megahertz, but this presents a timing problem very comparable to the one in the example.
Because of the narrow or impossible timing constrains, DMA as described above is not recommended for direct scanning of regular memory for video display, but is the preferred method for making quick transfers of information. For example, DMA is often used when a picture or part of a picture needs to be moved quickly between a frame buffer and regular memory, or when the contents of buffers for a floppy disk need to be quickly transferred to new locations.
In general a DMA controller is used as fol..................[:=> Show Contents <=:]



vlsi project ideas


Posted by: electronics seminars
Created at: Friday 15th of January 2010 01:21:21 PM
Last Edited Or Replied at :Thursday 23rd of February 2012 01:25:25 AM
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tor Controller
b. Design of an ATM (Automated Teller Machine) Controller
c. Design of an ATP (Any Time Payment) Machine for Electricity Bill Payment Application
d. Design of 8-Bit Pico Processor
e. Design of JPEG Image compression standard
f. Design of RS-232 System Controller
g. Design of 16 Point Radix-4 FFT (Fast Fourier Transform) Algorithm
h. Design of Triple Data Encryption Standard (DES)
i. Design of Floating Point Unit (FPU)
j. Design of Universal Asynchronous Receiver Transmitter (UART) “ 16550
k. Design of OFDM (Orthogonal Frequency Division Multiplexing) Tr..................[:=> Show Contents <=:]



Direct Memory Access


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 11:21:32 PM
Last Edited Or Replied at :Thursday 09th of February 2012 03:29:35 AM
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so there is no contention on the memory control, address, or data lines.

This is the entire concept behind direct memory access (DMA). To complete our picture, it is important to note that there are actually several ways that DMA can be done. In particular, there are three common choices:-

burst mode DMA :- In burst mode the DMA controller transfers an entire block of data without interruption. During the time of the transfer, the DMA controller retains complete control of the processor's bus.

Cycle Stealing :- If it is desirable to let the processor do some processing while the DMA c..................[:=> Show Contents <=:]



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