Datasheet

300
SAM9G25 [DATASHEET]
11032C–ATARM–25-Jan-13
• 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 = 1. The system behavior is unpredictable if ND0_ON_D16 is set to 0 at the same
time.
Note: EBI Chip Select 1 is to be assigned to the DDR2SDR Controller.
Table 25-6. Connection examples with various VDDNF and VDDIOM
NFD0_ON_D16 Signals VDDIOM VDDNF External Memory
0 NFD0 = D0, ..., NFD15 = D15 1.8V 1.8V DDR2 or LPDDR or LPSDR + NAND Flash 1.8V
0 NFD0 = D0, ..., NFD15 = D15 3.3V 3.3V 32-bit SDR + NAND Flash 3.3V
1
NFD0 = D16, ..., NFD15 =
D31
1.8V 1.8V DDR2 or LPDDR or LPSDR + NAND Flash 1.8V
1
NFD0 = D16, ..., NFD15 =
D31
1.8V 3.3V DDR2 or LPDDR or LPSDR + NAND Flash 3.3V
1
NFD0 = D16, ..., NFD15 =
D31
3.3V 1.8V 16-bit SDR + NAND Flash 1.8V
DDR_MP_EN External Memory
0 Default
1 DDR2 or LP-DDR + 8-bit NAND Flash