SAM9G45 Atmel Corporation, SAM9G45 Datasheet - Page 79

• 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

ARM DDI0198D
A second-level descriptor defines a tiny, a small, or a large page descriptor, or is invalid:
•
•
•
Coarse page tables provide base addresses for either small or large pages. Large page
descriptors must be repeated in 16 consecutive entries. Small page descriptors must be
repeated in each consecutive entry.
Fine page tables provide base addresses for large, small, or tiny pages. Large page
descriptors must be repeated in 64 consecutive entries. Small page descriptors must be
repeated in four consecutive entries and tiny page descriptors must be repeated in each
consecutive entry.
Second-level descriptor bit assignments are described in Table 3-7.
Bits
Large
[31:16]
[15:12]
31
Copyright © 2001-2003 ARM Limited. All rights reserved.
Large page base address
Small page base address
Tiny page base address
a large page descriptor provides the base address of a 64KB block of memory
a small page descriptor provides the base address of a 4KB block of memory
a tiny page descriptor provides the base address of a 1KB block of memory.
Small
[31:12]
-
Tiny
[31:10]
[9:6]
Should Be Zero.
Description
These bits form the corresponding bits of the physical
address.
16 15
12 11 10 9 8 7 6 5 4 3 2 1 0
Table 3-7 Second-level descriptor bits
AP3 AP2 AP1 AP0 C B 0 1
AP3 AP2 AP1 AP0 C B 1 0
Figure 3-9 Second-level descriptor
AP
Memory Management Unit
C B 1 1
0 0
Fault
Large page
Small page
Tiny page
3-15