Datasheet

385
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
Table 23-2 details the connections between the two memory controllers and the bus pins.
23.5 Application Example
23.5.1 Hardware Interface
Table 23-3 details the connections to be applied between the External Memory Bus pins and the external devices
for each memory controller.
Table 23-2. External Memory Bus Pins and Memory Controllers I/O Lines Connections
EBI Pins SDRAMC I/O Lines SMC I/O Lines
NWR1/NBS1 NBS1 NWR1/NBS1
A0/NBS0 Not Supported A0/NBS0
A1 Not Supported A1
A[11:2] A[9:0] A[11:2]
SDA10 A10 Not Supported
A12 Not Supported A12
A[14:13] A[12:11] A[14:13]
A[23:15] Not Supported A[23:15]
D[15:0] D[15:0] D[15:0]
Table 23-3. EBI Pins and External Static Device Connections
EBI Pins
SMC Pins
SDR-SDRAMC
Pins
8-bit
Static Device
2 x 8-bit
Static Devices
16-bit
Static Device NAND Flash
D0–D7 D0–D7 D0–D7 D0–D7 I/O0–I/O7 D0–D7
D8–D15 – D8–D15 D8–D15 I/O8–I/O15
(1)
D8–D15
A0/NBS0 A0 – NLB – DQM0
A1 A1 A0 A0 – –
A2–A9 A2–A9 A1–A8 A1–A8 – A0–A7
A10 A10 A9 A9 – A8
A11 A11 A10 A10 – A9
SDCS ––––CS
SDA10 ––––A10
A12 A12 A11 A11 – –
A13–A14 A13–A14 A12–A13 A12–A13 – A11–A12
A15 A15 A14 A14 – –
A16/BA0 A16 A15 A15 – BA0
A17/BA1 A17 A16 A16 – BA1
A18–A20 A18–A20 A17–A19 A17–A19 – –
A21/NANDALE A21 A20 A20 ALE –
A22/NANDCLE A22 A21 A21 CLE –
A23 A23 A22 A22 – –