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medha_design
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Newbie
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Registered: ‎05-17-2008

Time to excute Microblaze instruction from external SPI flash

In Using SIP Serial Flash reference design of Spartan-3E starter kit C_SCK_RATIO parameter of xps_spi peripheral is set to 64.

Does it mean the spi clock generated is 50MHz / 64 = ~781 KHz i.e.1.28 us to get a bit from SPI flash memory.

So to get 32 bits of microblaze instruction the time taken is ~33 us.

 

Please advice whether my assumption is correct OR not??

 

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