Datasheet

SAM9X25 [DATASHEET]

11054E–ATARM–10-Mar-2014

• NFD0_ON_D16: NAND Flash Databus Selection

0: NAND Flash I/O are connected to D0–D15 (default).

1: NAND Flash I/O are connected to D16–D31.

• DDR_MP_EN: DDR Multi-port Enable

0: DDR Multi-port is disabled (default).

1: DDR Multi-port is enabled, performance is increased. Warning: Use only with NFDO0_ON_D16 = 0. The system behavior is

unpredictable if ND0_ON_D16 is set to 1 at the same time.

Note: EBI Chip Select 1 is to be assigned to the DDR2SDR Controller.

NFD0_ON_D16 Signals VDDIOM VDDNF External Memory

0 NFD0 = D0,..., NFD15 = D15 1.8V 1.8V DDR2 or LP-DDR or LPSDR + NAND Flash 1.8V

0 NFD0 = D0,..., NFD15 = D15 3.3V 3.3V 32-bit SDRAM + NAND Flash 3.3V

1 NFD0 = D16,..., NFD15 = D31 1.8V 1.8V DDR2 or LP-DDR or LPSDR + NAND Flash 1.8V

1 NFD0 = D16,..., NFD15 = D31 1.8V 3.3V DDR2 or LP-DDR or LPSDR + NAND Flash 3.3V

1 NFD0 = D16,..., NFD15 = D31 3.3V 1.8V 16-bit SDR + NAND Flash 1.8V