SAM9X25 Atmel Corporation, SAM9X25 Datasheet - Page 61
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SAM9X25
Manufacturer Part Number
SAM9X25
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9X25.pdf
(45 pages)
3.SAM9X25.pdf
(1145 pages)
4.SAM9X25.pdf
(45 pages)
5.SAM9X25.pdf
(1325 pages)
Specifications of SAM9X25
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
400 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
105
Ext Interrupts
105
Usb Transceiver
3
Usb Speed
Hi-Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
3
Uart
7
Can
2
Lin
4
Ssc
1
Ethernet
2
Sd / Emmc
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
NO
External Bus Interface
1
Dram Memory
DDR/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
- SAM9261 PDF datasheet
- SAM9X25 PDF datasheet #2
- SAM9X25 PDF datasheet #3
- SAM9X25 PDF datasheet #4
- SAM9X25 PDF datasheet #5
- Current page: 61 of 248
- Download datasheet (2Mb)
2.3.12
2.3.13
ARM DDI0198D
Register c11 and c12
Process ID Register c13
It is not possible for a lockdown entry to entirely map either small or large pages, unless
all the subpage access permissions are identical. Entries can still be written into the
lockdown region, but the address range that is mapped only covers the subpage
corresponding to the address that was used to perform the page table walk.
Example 2-1 is a code sequence that locks down an entry to the current victim.
Accessing (reading or writing) these registers causes Unpredictable behavior.
Register c13 accesses the process identifier registers. The register accessed depends on
the value of the Opcode_2 field:
Opcode_2 = 0
Opcode_2 = 1
You can use the process ID register to determine the process that is currently running.
The process identifier is set to 0 at reset.
Copyright © 2001-2003 ARM Limited. All rights reserved.
Note
Selects the Fast Context Switch Extension (FCSE) Process
Identifier (PID) Register.
Selects the Context ID Register.
Example 2-1 Lock down an entry to the current victim
Programmer’s Model
2-33
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