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)?