SAM9G45 Atmel Corporation, SAM9G45 Datasheet - Page 63

• 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

2.3.14
ARM DDI0198D
Register c14
31
Where A1, A2, and A3 are the three instructions following the fast context switch.
Context ID Register
The Context ID Register provides a mechanism to allow real-time trace tools to identify
the currently executing process in multi-tasking environments.
The contents of this register are replicated on the ETMPROCID pins of the
ARM926EJ-S processor. ETMPROCIDWR is pulsed when a write occurs to the
Context ID Register.
Table 2-27 shows the ARM instructions that you can use to access the Context ID
Register.
The format of the Context ID Register, Rd, transferred during this operation is shown
in Figure 2-16.
Accessing (reading or writing) this register is reserved.
Copyright © 2001-2003 ARM Limited. All rights reserved.
Function
Read context ID
Write context ID
Context identifier
Table 2-27 Context ID register operations
Figure 2-16 Context ID Register format
Data
Context ID
Context ID
ARM Instruction
Programmer’s Model
0
2-35