AT91RM9200-CI-002 Atmel, AT91RM9200-CI-002 Datasheet - Page 48

• 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: -

11.7.2
Access: Read/Write
The CP15 Register 1, or Control Register, contains the control bits of the ARM920T.
• M[0]: MMU Enable
0 = MMU disabled.
1 = MMU enabled.
• A[1]: Alignment Fault Enable
0 = Fault checking disabled.
1 = Fault checking enabled.
• C[2]: DCache Enable
0 = DCache disabled.
1 = DCache enabled.
• B[7]: Endianness
0 = Little endian mode.
1 = Big endian mode.
• S[8]: System Protection
Modifies the MMU protection system.
For further details, see the ARM920T Technical Reference Manual, Rev. DDI0151C.
• R[9]: ROM Protection
Modifies the MMU protection system.
For further details, see the ARM920T Technical Reference Manual, Rev. DDI0151C.
• I[12]: ICache Control
0 = ICache disabled.
1 = ICache enabled.
48
31
23
15
iA
B
7
-
-
AT91RM9200
CP15 Register 1, Control
RR
nF
30
22
14
6
1
-
29
21
13
V
5
1
-
-
28
20
12
4
1
-
-
I
27
19
11
0
1
3
-
-
26
18
10
C
0
2
-
-
25
17
R
A
9
1
-
-
1768I–ATARM–09-Jul-09
24
16
M
S
8
0
-
-