circular read address generator

hi

i m doing project on image processing.For that i need to store pixe

value of any frame in memory. I read from one journal that there i one circular read address generator which is used to generate physica address from logical address this help to reduce the size of memory I have to store 30*32 pixel in memory.NOW fo that i have to generate physical address for those memor location.THey suggest circular read address generator for this

But i never read about circular read address generato.So pleas

anybody tell me about this generator Is it possible to reduce memory size using yhis method

Reply to
ravindra kalla
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Hi,

I've used circular buffers in DSP programming, everytime you read a value from RAM, the address pointer increments so you don't have to pay attention to addressing. "Circular" means that at the end of the memory, the address pointer makes a wrap around and starts at the beginning of the memory, again. This is usefull for signal processing, e.g. FFT or something.

Stefan

Reply to
Stefan

hi stefen

can we use circular ram in such way that it help to reduc

memory size i.e. suppose if we don't need some of memory space in th begenning than we rewrite that space with some other data and the us the

Reply to
ravindra kalla

hi ravinda,

I did't get your point exactly; you always have to use something like adress decoders in order to use the whole memory space for different IPs or something. With circular buffers you just define the length and this is the space that is used. The other memory is free and can be used! There is no difference in need of memory space between circular generated adresses or just adressing your data yourself.

rgds,

Stefan

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Reply to
Stefan

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