Datasheet

177
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
• The address line A23 is to select I/O (A23=1) or Memory mode (A23=0) and the address line A22 for REG
function.
• A22, A23, CFRNW, CFS0, CFCS1, CFCE1 and CFCE2 signals are multiplexed with PIO lines and thus the
dedicated PIOs must be programmed in peripheral mode in the PIO controller.
• Configure a PIO line as an output for CFRST and two others as an input for CFIRQ and CARD DETECT
functions respectively.
• Configure SMC CS4 and/or SMC_CS5 (for Slot 0 or 1) Setup, Pulse, Cycle and Mode accordingly to
CompactFlash timings and system bus frequency.