SAM9G20 Atmel Corporation, SAM9G20 Datasheet - Page 165

• 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

8.5
ARM DDI0198D
Privileged instructions
Coprocessor pipeline
CPLATECANCEL
CPINSTR[31:0]
CHSDE[1:0]
CHSEX[1:0]
nCPTRANS
nCPMREQ
CPPASS
CLK
The coprocessor might restrict certain instructions for use in privileged modes only. To
do this, the coprocessor has to track the nCPTRANS output.
Figure 8-7 shows how nCPTRANS changes after a mode change.
Copyright © 2001-2003 ARM Limited. All rights reserved.
CPRT
Fetch
Old mode
Decode
Ignored
Decode
Ignored
Decode
LAST
Execute
New mode
Figure 8-7 Privileged instructions
Ignored
Memory
Coprocessor Interface
Instruction
aborted
8-9