Is this possible to emulate the SPI signals from Sharc Processor(21366) Flag pins?
Any reference available?
It would be hard to emulate SPI using Flag pins as you need to maintain timing relationship between clock and the MISO ,MOSI. You will need to toggle the flag pins everytime the Clock and data needs a state change. This becomes cumbersome. You could use the flag pin as a chip select though. To emulate other SPI signals you could use a SPORT.
You could refer to the following application notes for details on such an interface.
EE-248 Interfacing AD7676 ADCs to ADSP-21365 SHARC Processors
EE-244 Interfacing Gated Clocks to ADSP-21065L SHARC Processors
You can find them at the following link.
Hope this information helps.