at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 180
at91sam9263
Manufacturer Part Number
at91sam9263
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9263.pdf
(1065 pages)
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Figure 20-5. CompactFlash Read/Write Control Signals
Table 20-8.
20.5.6.4
Table 20-9.
6249D–ATARM–20-Dec-07
Attribute Memory
Common Memory
I/O Mode
True IDE Mode
Pins
NCS4/CFCS0
NCS5/CFCS1
Mode Base Address
Multiplexing of CompactFlash Signals on EBI Pins
CompactFlash Mode Selection
Dedicated CompactFlash Interface Multiplexing
CS4A = 1
CFCS0
Table 20-9 on page 180
Flash logic signals with other EBI signals on the EBI pins. The EBI pins in
dedicated to the CompactFlash interface as soon as the EBI0_CS4A and/or EBI0_CS5A field of
the EBI0_CSA Register in the Chip Configuration User Interface is set. These pins must not be
used to drive any other memory devices.
The EBI pins in
corresponding CompactFlash interface is enabled (EBI0_CS4A = 1 and/or EBI0_CS5A = 1).
External Bus Interface
SMC
CFOE
NWR0_NWE
NRD
NRD_NOE
CompactFlash Signals
1
0
A23
A22
Table 20-10 on page 181
CS5A = 1
CFCS1
and
NWR0_NWE
Table 20-10 on page 181
CFWE
1
1
0
1
1
1
0
1
CompactFlash Logic
remain shared between all memory areas when the
AT91SAM9263 Preliminary
CS4A = 0
NCS4
1
1
0
1
0
1
illustrate the multiplexing of the Compact-
CFIOR
NRD
NRD
1
EBI Signals
CFOE
CFWE
CFIOR
CFIOW
CS5A = 0
NCS5
Table 20-9
NWR0_NWE
NWR0_NWE
CFIOW
1
are strictly
180
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