AT91SAM9G10-EK Atmel, AT91SAM9G10-EK Datasheet - Page 143
AT91SAM9G10-EK
Manufacturer Part Number
AT91SAM9G10-EK
Description
KIT DEV FOR SAM9G10 ARM
Manufacturer
Atmel
Type
MCUr
Specifications of AT91SAM9G10-EK
Contents
Board, Cables, Power Supply
Silicon Manufacturer
Atmel
Core Architecture
AVR
Kit Contents
Board
Svhc
No SVHC (15-Dec-2010)
Mcu Supported Families
AT91SAM9G10, ARM926EJ-S
Tool / Board Applications
Microcontroller
Rohs Compliant
Yes
For Use With/related Products
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 143 of 730
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21.6.5.1
21.6.5.2
6462A–ATARM–03-Jun-09
I/O Mode, Common Memory Mode, Attribute Memory Mode and True IDE Mode
CFCE1 and CFCE2 signals
Within the NCS4 and/or NCS5 address space, the current transfer address is used to distinguish
I/O mode, common memory mode, attribute memory mode and True IDE mode.
The different modes are accessed through a specific memory mapping as illustrated on
21-3. A[23:21] bits of the transfer address are used to select the desired mode as described in
Table 21-5 on page
Figure 21-3. CompactFlash Memory Mapping
Note:
Table 21-5.
To cover all types of access, the SMC must be alternatively set to drive 8-bit data bus or 16-bit
data bus. The odd byte access on the D[7:0] bus is only possible when the SMC is configured to
drive 8-bit memory devices on the corresponding NCS pin (NCS4 and or NCS5). The Chip
Select Register (DBW field in the corresponding Chip Select Mode Register) of the NCS4 and/or
NCS5 address space must be set as shown in
NBS1 and NBS0 are the byte selection signals from SMC and are available when the SMC is set
in Byte Select mode on the corresponding Chip Select.
A[23:21]
000
010
100
110
111
The A22 pin of the EBI is used to drive the REG signal of the CompactFlash Device (except in
True IDE mode).
CF Address Space
CompactFlash Mode Selection
143.
Offset 0x00E0 0000
Offset 0x00C0 0000
Offset 0x0080 0000
Offset 0x0040 0000
Offset 0x0000 0000
Table 21-6
Alternate True IDE Mode
Mode Base Address
Common Memory
Attribute Memory
True IDE Mode
Common Memory Mode Space
True IDE Alternate Mode Space
Attribute Memory Mode Space
to enable the required access type.
I/O Mode
True IDE Mode Space
I/O Mode Space
AT91SAM9G10
Figure
143
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