Dear all,
I am configuring a Xilinx Spartan 3 using SelectMap (the parallel interface), although the simple details of this interface that I am interested apply to a number of other chips. Having looked at as many datasheets, application notes and examples as I can find, I cannot answer a simple question: in what order are the bytes of a SelectMap configuration stream sent?
Ignoring bit-swapping within a byte, are the bytes forming the beginning of the stream (dummy word/sync word) sent as: 0xFF 0xFF 0xFF 0xFF 0xAA
0x99 0x55 0x66 i.e. big-endian, or are they sent as 0xFF 0xFF 0xFF 0xFF 0x66 0x55 0x99 0xAA i.e. little-endian?Any help would be greatly appreciated.
TIA,
Peter