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Altera_Forum
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19 years ago

Question about SPI core

Hello everyone: I am trying a SPI core(3 Wire serial, provided by altera) to control SPI DAC, and I configured it as a master mode. The Sclk is setted to 25Mhz. But when I observed the s...
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Altera_Forum
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19 years ago

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originally posted by david_cai@Oct 25 2006, 10:06 AM

you'd better read "altera embedded peripherals handbook.pdf".

one possible reason is spi core provided by altera can't support clock up to 25mhz.

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Thanks David_Cai.

Yes, I have read that handbook, when I set 25Mhz in the winzard, the actual frequecy is 21.5MHz(85/4).

But the slck port always high is not reasonable.