Reference design for type 2A SPI interface?

[Paul C]

Hi - I would like to use the extended addressing SPI interface Digilent has championed. Is there a reference design?

 

[JColvin]

Hi @Paul C,

I don't know where you sourced that particular image, but for clarity, Digilent's Pmod Interface Type 2A (expanded SPI) does not make any mention of additional addresses like your image above does; you can verify this on page 7 of the Pmod Specification document freely available here: https://digilent.com/reference/pmod/start.

Indeed, I'm not certain how Address 0..3 would even work with SPI in the first place. Pmod Interface Type 2A, speaking broadly, would be more accurately described as a combination of Pmod Interface Type 2 on pins 1-6 and Pmod Interface Type 1 on pins 7-12.

Thanks,
JColvin