[topspin]

What are the 8 SMA ports for? I've looked at the sifive page and the crowdsupply site as well; haven't been able to figure it out. Not obvious why a RISC-V development board would have SMA ports.

[nickysielicki]

Labels are the following:

GEMGXLALTCLK

PROCMON

DDRCTRLALTCLK

DDRPHYALTCLK

DDR_ATB0

DDR_ATB1

DDR_PLL_TESTOUT_P

DDR_PLL_TESTOUT_N

These are just SoC debug headers. Eg: GEMGXL comes from Gigabit Ethernet MAC, and GXL is a marketing term from Cadence.

[topspin]

Six appear to be test points for monitoring memory bus clocks.