Datasheet

173
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
Application Example
Figure 19-8 illustrates an example of a CompactFlash application. CFCS0 and CFRNW signals are not directly
connected to the CompactFlash slot 0, but do control the direction and the output enable of the buffers between
the EBI and the CompactFlash Device. The timing of the CFCS0 signal is identical to the NCS4 signal. Moreover,
the CFRNW signal remains valid throughout the transfer, as does the address bus. The CompactFlash _WAIT
signal is connected to the NWAIT input of the Static Memory Controller. For details on these waveforms and
timings, refer to Section 20. “Static Memory Controller (SMC)”.
Figure 19-8. CompactFlash Application Example
CompactFlash ConnectorEBI
D[15:0]
/OEDIR
_CD1
_CD2
/OE
D[15:0]
A25/CFRNW
NCS4/CFCS0
CD (PIO)
A[10:0]
A22/REG
NOE/CFOE
A[10:0]
_REG
_OE
_WE
_IORD
_IOWR
_CE1
_CE2
NWE/CFWE
NWR1/CFIOR
NWR3/CFIOW
CFCE1
CFCE2
_WAIT
NWAIT