Datasheet

Table Of Contents
312
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
27.5 Application Example
27.5.1 Hardware Interface
Table 27-3 on page 312 details the connections to be applied between the EBI pins and the external devices for each
Memory Controller.
Notes: 1. NWR1 enables upper byte writes. NWR0 enables lower byte writes.
2. NWRx enables corresponding byte x writes. (x = 0,1,2 or 3).
3. NBS0 and NBS1 enable respectively lower and upper bytes of the lower 16-bit word.
4. NBS2 and NBS3 enable respectively lower and upper bytes of the upper 16-bit word.
5. D25-31 and A20, A23-A25, NCS2, NCS4, NCS5 are multiplexed on PD15-PD31.
Table 27-3. EBI Pins and External Static Device Connections
Signals:
EBI_
Pins of the Interfaced Device
8-bit Static
Device
2 x 8-bit
Static
Devices
16-bit Static
Device
4 x 8-bit
Static
Devices
2 x 16-bit
Static
Devices
32-bit Static
Device
Controller SMC
D0 - D7 D0 - D7 D0 - D7 D0 - D7 D0 - D7 D0 - D7 D0 - D7
D8 - D15 D8 - D15 D8 - D15 D8 - D15 D8 - 15 D8 - 15
D16 - D24 D16 - D23 D16 - D23 D16 - D23
D25 - D31
(5))
D24 - D31 D24 - D31 D24 - D31
A0/NBS0 A0 NLB NLB
(3)
BE0
A1/NWR2/NBS2/DQM2 A1 A0 A0 WE
(2)
NLB
(4)
BE2
A2 - A22
(5)
A[2:22] A[1:21] A[1:21] A[0:20] A[0:20] A[0:20]
A23 - A25
(5)
A[23:25] A[22:24] A[22:24] A[21:23] A[21:23] A[21:23]
NCS0 CS CS CS CS CS CS
NCS1/DDRSDCS CS CS CS CS CS CS
NCS2
(5)
CS CS CS CS CS CS
NCS3/NANDCS CS CS CS CS CS CS
NCS4
(5)
CS CS CS CS CS CS
NCS5
(5)
CS CS CS CS CS CS
NRD OE OE OE OE OE OE
NWR0/NWE WE WE
(1)
WE WE
(2)
WE WE
NWR1/NBS1 WE
(1)
NUB WE
(2)
NUB
(3)
BE1
NWR3/NBS3/DQM3 WE
(2)
NUB
(4)
BE3