Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 133
SAM9G20
Note 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.
NCS3/NANDCS – – – CE
(3)
NCS4/CFCS0 – CFCS0
(1)
CFCS0
(1)
–
NCS5/CFCS1 – CFCS1
(1)
CFCS1
(1)
–
NCS6 – – – –
NCS7 – – – –
NANDOE – – – RE
NANDWE – – – WE
NRD/CFOE – OE – –
NWR0/NWE/CFWE – WE WE –
NWR1/NBS1/CFIOR DQM1 IOR IOR –
NWR3/NBS3/CFIOW DQM3 IOW IOW –
CFCE1 – CE1 CS0 –
CFCE2 – CE2 CS1 –
SDCK CLK – – –
SDCKE CKE – – –
RAS RAS – – –
CAS CAS – – –
SDWE WE – – –
NWAIT – WAIT WAIT –
Pxx
(2)
– CD1 or CD2 CD1 or CD2 –
Pxx
(2)
–––CE
(3)
Pxx
(2)
– – – RDY
Table 19-4: EBI Pins and External Device Connections (Continued)
Signals: EBI_
Pins of the Interfaced Device
SDRAM Controller Static Memory Controller
SDRAM
CompactFlash
(EBI only)
CompactFlash
True IDE Mode
(EBI only) NAND Flash