what have bandwidth both wordwide=1 and wordwide=0?

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Anonymous
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 hi 

   

In Fx2lp, if i use SLAVEFIFO mode,  

   

What is different (bandwidth / speed )point in wordwide=1 and  wordwide=0?

   

i know wordwide=1  is [15:0]  16bit mode. but i dont know.

   

if i use wordwide =1 in slavefifo mode, is bps (bits per second) is almost same in wordwide=0?

   

Then, wordwide=1 have actually total high bandwidth and fast bps than wordwide=0. ins't it ?

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6 Replies
Anonymous
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For maximum bandwidth use will be 16-bit bus. In the slave mode and 16-bit bus  I transfer data at 30 megabytes per second (Windows XP SP3, c++, data took fpga).

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Anonymous
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 Thanks a lot

   

What if 8bit mode have 30MBytes per second, does have 60MBytes per second in 16bit mode ?

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Anonymous
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not so fast. I get  30 mbyte in 16 bit mode...

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Anonymous
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 ok so what if 8bit mode?

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Anonymous
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 Did think 16bit mode helpful for  speed up ?

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Anonymous
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 rate strongly depends on the hardware unit receives data from chip. but without the use of 16 mode, you will not be able to get high speed

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