at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 156

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

20.7.7.2
156
AT91SAM9G20 Preliminary
Software Configuration
The following configuration has to be performed:
• Assign the EBI CS4 and/or EBI_CS5 to the CompactFlash Slot 0 or/and Slot 1 by setting the
• The address line A21 is to select Alternate True IDE (A21=1) or True IDE (A21=0) modes.
• CFRNW, CFS0, CFCS1, CFCE1 and CFCE2 signals are multiplexed with PIO lines and thus
• Configure a PIO line as an output for CFRST and two others as an input for CFIRQ and
• Configure SMC CS4 and/or SMC_CS5 (for Slot 0 or 1) Setup, Pulse, Cycle and Mode
bit EBI_CS4A or/and EBI_CS5A in the EBI Chip Select Assignment Register located in the
bus matrix memory space.
the dedicated PIOs must be programmed in peripheral mode in the PIO controller.
CARD DETECT functions respectively.
accordingly to Compact Flash timings and system bus frequency.
6384B–ATARM–15-Dec-08