The CRB of D2000 has ICSP header. For example to connect SPI to an Arduino WIFI shield.
This header is also used on Galileo - Quark X1000 board.
On Galileo board the SPI signals are converted from 3.3 Volt to 5 Volt level.
The CRB of Quark D2000 does not have this voltage level conversion.
Can you explain this different implementation?
Oops, I just found the answer to my question: The Quark D2000 has 5 Volt tolerant I/O, which is not the case for the Quark X1000.