AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 168

• Manufacturer Part Number: AT91SAM9G45-CU-999
• Description: IC MCU ARM9 APMC 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G45-CU-999

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

20.2.7.6
Figure 20-5. CompactFlash Memory Mapping
168
I/O Mode, Common Memory Mode, Attribute Memory Mode and True IDE Mode
AT91SAM9G45
CompactFlash Support
CF Address Space
The External Bus Interface 0 integrates circuitry that interfaces to CompactFlash devices.
The CompactFlash logic is driven by the Static Memory Controller (SMC) on the NCS4 and/or
NCS5 address space. Programming the EBI_CS4A and/or EBI_CS5A bit of the EBI_CSA Reg-
ister in the Chip Configuration User Interface to the appropriate value enables this logic. (For
details on this register, refer to the Chip Configuration User Interface in the Bus Matrix Section.)
Access to an external CompactFlash device is then made by accessing the address space
reserved to NCS4 and/or NCS5 (i.e., between 0x5000 0000 and 0x5FFF FFFF for NCS4 and
between 0x6000 0000 and 0x6FFF FFFF for NCS5).
All CompactFlash modes (Attribute Memory, Common Memory, I/O and True IDE) are sup-
ported but the signals _IOIS16 (I/O and True IDE modes) and _ATA SEL (True IDE mode) are
not handled.
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
20-5. A[23:21] bits of the transfer address are used to select the desired mode as described in
Table 20-6 on page
Note:
Table 20-6.
A[23:21]
000
010
100
110
111
The A22 pin is used to drive the REG signal of the CompactFlash Device (except in True IDE
mode).
CompactFlash Mode Selection
Offset 0x00E0 0000
Offset 0x00C0 0000
Offset 0x0080 0000
Offset 0x0040 0000
Offset 0x0000 0000
168.
Common Memory Mode Space
True IDE Alternate Mode Space
Attribute Memory Mode Space
True IDE Mode Space
Alternate True IDE Mode
I/O Mode Space
Mode Base Address
Common Memory
Attribute Memory
True IDE Mode
I/O Mode
6438F–ATARM–21-Jun-10
Figure