Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
314
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
Note:
1.
A switch, NFD0_ON_D16, enables the user to select NAND Flash path on D0-D7 or D16-D24 depending on
memory power supplies. This switch is located in the EBICSA register in the Bus Matrix user interface.
memory power supplies. This switch is located in the EBICSA register in the Bus Matrix user interface.
27.5.2 Connection
Examples
shows an example of connections between the EBI and external devices.
Figure 27-2. EBI Connections to Memory Devices
RAS
VDDIOM
RAS
RAS
–
CAS
VDDIOM
CAS
CAS
–
SDWE
VDDIOM
WE
WE
–
Pxx
VDDNF
–
–
CE
Pxx
VDDNF
–
–
RDY
Table 27-4. EBI Pins and External Device Connections (Continued)
Signals:
EBI_
EBI_
Power supply
Pins of the Interfaced Device
DDR2/LPDDR
SDR/LPSDR
NAND Flash
Controller
DDRC
SDRAMC
NFC
EBI
D0-D31
A2-A15
RAS
CAS
CAS
SDCK
SDCKE
SDWE
A0/NBS0
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CAS
CLK
CKE
WE
CKE
WE
DQM
CS
BA0
BA1
BA1
NWR1/NBS1
A1/NWR2/NBS2
NWR3/NBS3
NCS1/SDCS
D0-D7
D8-D15
A16/BA0
A17/BA1
A18-A25
A17/BA1
A18-A25
A10
SDA10
SDA10
A2-A11, A13
NCS0
NCS2
NCS3
NCS4
NCS5
NCS3
NCS4
NCS5
A16/BA0
A17/BA1
A17/BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CAS
CLK
CKE
WE
CKE
WE
DQM
CS
BA0
BA1
BA1
A10
SDA10
A2-A11, A13
A16/BA0
A17/BA1
A17/BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CAS
CLK
CKE
WE
CKE
WE
DQM
CS
BA0
BA1
BA1
D16-D23
D24-D31
A10
SDA10
A2-A11, A13
A16/BA0
A17/BA1
A17/BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CAS
CLK
CKE
WE
CKE
WE
DQM
CS
BA0
BA1
BA1
A10
SDA10
A2-A11, A13
A16/BA0
A17/BA1
A17/BA1
NBS0
NBS1
NBS3
NBS2
NRD/NOE
NWR0/NWE
128K x 8
SRAM
128K x 8
SRAM
D0-D7
D0-D7
A0-A16
A0-A16
A1-A17
A1-A17
CS
CS
OE
WE
WE
D0-D7
D8-D15
OE
WE
WE
NRD/NOE
A0/NWR0/NBS0
NRD/NOE
NWR1/NBS1
SDWE
SDWE
SDWE
SDWE