Datasheet

SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
168
Notes: 1. Not directly connected to the CompactFlash slot. Permits the control of the bidirectional buffer between the EBI data bus
and the CompactFlash slot.
2. Any PIO line.
3. CE connection depends on the NAND Flash.
For standard NAND Flash devices, it must be connected to any free PIO line.
For “CE don’t care” NAND Flash devices, it can be either connected to NCS3/NANDCS or to any free PIO line.
4. I/O8–I/O15 pins used only for 16-bit NAND Flash device.
5. EBI_NWAIT signal is multiplexed with PC15.
19.2.5.2 Connection Examples
Figure 19-5 shows an example of connections between the EBI and external devices.
Figure 19-5. EBI Connections to Memory Devices
CAS CAS CAS – – –
SDWE WE WE – – –
NWAIT
(5)
––WAITWAIT–
Pxx
(2)
– – CD1 or CD2 CD1 or CD2 –
Pxx
(2)
––– –CE
(3)
Pxx
(2)
– – – – RDY
Table 19-5. EBI Pins and External Device Connections (Continued)
Signals: EBI_
Pins of the Interfaced Device
DDR2/LPDDR SDRAM CompactFlash
CompactFlash
True IDE Mode NAND Flash
Controller DDRC SDRAMC SMC
EBI
D0-D31
A2-A15
RAS
CAS
SDCK
SDCKE
SDWE
A0/NBS0
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
NWR1/NBS1
A1/NWR2/NBS2
NWR3/NBS3
NCS1/SDCS
D0-D7
D8-D15
A16/BA0
A17/BA1
A18-A25
A10
SDA10
SDA10
A2-A11, A13
NCS0
NCS2
NCS3
NCS4
NCS5
A16/BA0
A17/BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
A10 SDA10
A2-A11, A13
A16/BA0
A17/BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
D16-D23 D24-D31
A10
SDA10
A2-A11, A13
A16/BA0
A17/BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
A10
SDA10
A2-A11, A13
A16/BA0
A17/BA1
DQM0
DQM1
DQM3
DQM2
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
D0-D7
D8-D15
OE
WE
NRD/NOE
A0/NWR0/NBS0
NRD/NOE
NWR1/NBS1
SDWE
SDWE
SDWE
SDWE
DQM0-DQM3