Dummy broadcast write OTP_ECC_TEST=0x00 to sync the DLL (delay-locked loop)
Enable auto addressing mode by broadcast writing CONTROL1=0x01.
Loop through the total number of boards setting the DIR0_ADDR of each board
Broadcast write everything as a stack device first (COMM_CTRL=0x02)
IF 1 board total: Set device as base and top of stack (COMM_CTRL=0x01) ELSE: Set top of stack and base device separately (base device COMM_CTRL=0x00, top device COMM_CTRL=0x03)