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ADSP BFin-532: SPORT emulate SPI specs

Question asked by allenyin on Nov 16, 2015
Latest reply on Nov 30, 2015 by allenyin

I'm following application note EE_304 (http://www.analog.com/media/en/technical-documentation/application-notes/EE_304_Blackfin.pdf) to use SPORT as SPI on blackfin BF532

 

However, I'm having trouble fulfilling the SPI specs. Specifically, as pointed out in the manual page 10-38: "the enable lead time (T1), the enable lag time (T2), and the sequential transfer delay time (T3)  each must always be greater than or equal to one-half the SCK period".

 

With the frame-sync, is there any way to fulfill both the enable lag time and enable lag time requirements?

 

If not, is there any other way to emulate 4 SPI ports (in addition to the one onboard already)?

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