In the 13.0 version of the Cyclone V SOC dev kit (Rev C) the BootSel default is set to 4 which (according to various tables etc) should be a 1.8V uSD card.
This seem odd as the uSD socket power I connected to 3.3v.
Looking at late documentation(and the Arrow SOC dev kit), the BootSel should be set to 5 (3.3V SD) where option 4 is no supported.
My questions are:
1) for the Rev C board, should Bootsel 0 be Low (as per defaults and which seems to work) or high as per other later documentation?
2) for our own PCB using the HPS, should we do something special to support 1.8V or in fact, should we be using option 5 (Bootsel2 high)?
This seem odd as the uSD socket power I connected to 3.3v.
Looking at late documentation(and the Arrow SOC dev kit), the BootSel should be set to 5 (3.3V SD) where option 4 is no supported.
My questions are:
1) for the Rev C board, should Bootsel 0 be Low (as per defaults and which seems to work) or high as per other later documentation?
2) for our own PCB using the HPS, should we do something special to support 1.8V or in fact, should we be using option 5 (Bootsel2 high)?