I am trying to understand the pins on the header as I would like to get card detect enabled. I am not using the GHI SD Card board but a 9 pin board with CD. The 8 other pins [ Dat0-3, CMD, VDD, GND, CLK] hook up fine and the basic read write samples work (with a Thread.sleep(1) to enable the unmount without an exception).
What pin if any should I connect CD to?
I am struggling to understand IO4/PWM. The USBizi manual says that On power up, this pin is used to select the communication interface for GHI boot loader and debugging. So what purpose does it have for SD Cards?
Out of interest what is IO46* power enable signal for?