SAM9G20 Atmel Corporation, SAM9G20 Datasheet - Page 222

• Manufacturer Part Number: SAM9G20
• Manufacturer: Atmel Corporation

Specifications of SAM9G20

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 1
• Uart: 7
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 95
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• 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
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

CP15 Test and Debug Registers
B-16
Bit
[31:16]
[15:14]
[13:12]
[11:10]
[9:8]
[7:6]
[5:4]
[3:2]
[1:0]
Name
-
IWB
IWT
INCB
INCNB
DWB
DWT
DNCB
DNCNB
Table B-12 describes the bit fields of the Memory Region Remap Register.
Table B-13 shows the encoding of each of the remap fields.
Definition
Should Be Zero
Remap select bits for instruction-side write-back region
Remap select bits for instruction-side write-through region
Remap select bits for instruction-side noncachable bufferable region
Remap select bits for instruction-side noncachable nonbufferable region
Remap select bits for data-side write-back region
Remap select bits for data-side write-through region
Remap select bits for data-side noncachable bufferable region
Remap select bits for data-side noncachable nonbufferable region
Copyright © 2001-2003 ARM Limited. All rights reserved.
Table B-12 Encoding of the Memory Region Remap Register
Table B-13 Encoding of the remap fields
Remap field
b00 = noncachable nonbufferable
b01 = noncachable bufferable
b10 = write-through
b11 = write-back
ARM DDI0198D
Reset state
b10
b00
b01
b00
b11
b01
b11
b10