SAM9G45 Atmel Corporation, SAM9G45 Datasheet - Page 90

• Manufacturer Part Number: SAM9G45
• Manufacturer: Atmel Corporation

Specifications of SAM9G45

• Flash (kbytes): 0 Kbytes
• Pin Count: 324
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 160
• Ext Interrupts: 160
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 5
• Lin: 4
• Ssc: 2
• Ethernet: 1
• Sd / Emmc: 2
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• Self Program Memory: NO
• External Bus Interface: 2
• Dram Memory: DDR2/LPDDR, SDRAM/LPSDR
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Memory Management Unit
3.5
3-26
Fault checking sequence
permission
translation
Section
Section
Section
domain
fault
fault
fault
The sequence the MMU uses to check for access faults is different for sections and
pages. The sequence for both types of access is shown in Figure 3-13.
The conditions that generate each of the faults are described in:
•
No access (00)
Reserved (10)
Violation
Copyright © 2001-2003 ARM Limited. All rights reserved.
Invalid
Alignment faults on page 3-27
permissions
Client (01)
Section
Section
access
Check
Check address alignment
Get first-level descriptor
Modified virtual address
Check domain status
Physical address
Manager
(11)
permissions
table entry
Client (01)
Get page
access
Check
Page
Page
Figure 3-13 Sequence for checking faults
No access (00)
Reserved (10)
Misaligned
Violation
Invalid
ARM DDI0198D
translation
Alignment
permission
domain
Page
fault
fault
Page
Page
fault
fault