AT91RM9200-CI-002 Atmel, AT91RM9200-CI-002 Datasheet - Page 142

• Manufacturer Part Number: AT91RM9200-CI-002
• Description: IC ARM9 MCU 256 BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91RM9200-CI-002

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: POR
• Number Of I /o: 122
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: ROM
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

17.6.6.3
Table 17-4.
17.6.6.4
142
Access
Byte R/W Access
Odd Byte R/W Access
Half-word R/W Access
AT91RM9200
Access Type
Multiplexing of CompactFlash Signals on EBI Pins
Upper- and Lower-byte Access
CFCE2
Figure 17-4. CompactFlash Read/Write Control Signals
The CFCE1 and CFCE2 signals enable upper- and lower-byte access on the data bus of the
CompactFlash device in accordance with
bus is only possible when the SMC is configured to drive 8-bit memory devices on the NCS4 pin.
The Chip Select Register (DBW field in
190) of the NCS4 address space must be set as shown in
access type. The CFCE1 and CFCE2 waveforms are identical to the NCS4 waveform. For
details on these waveforms and timings, refer to the Static Memory Controller
“Description” on page
Table 17-5
logic signals with other EBI signals on the EBI pins. The EBI pins in
cated to the CompactFlash interface as soon as the CS4A field of the Chip Select Assignment
Register is set
pins must not be used to drive any other memory devices.
1
1
0
0
CFCE1
below and
0
0
1
0
(See Section 17.8.1 ”EBI Chip Select Assignment Register” on page 152.)
External Bus Interface
155.
A0
Table 17-6 on page 143
X
X
0
1
SMC
NWR0_NWE
NRD_NOE
D[15:8]
Don’t Care/High Z
Don’t Care/High Z
Odd Byte
Odd Byte
A23
Section 18.7.1 “SMC Chip Select Registers” on page
Table 17-4
illustrate the multiplexing of the CompactFlash
CompactFlash Logic
1
1
1
1
below. The odd byte access on the D[7:0]
D[7:0]
Even Byte
Odd Byte
Don’t Care/High Z
Even Byte
Table 17-4
Table 17-5
CFIOR
CFIOW
CFOE
CFWE
to enable the required
SMC_CSR4 (DBW)
8-bit or 16-bit
8-bit
16-bit
16-bit
1768I–ATARM–09-Jul-09
are strictly dedi-
Section 18.1
These