SAM9X25 Atmel Corporation, SAM9X25 Datasheet - Page 163

• Manufacturer Part Number: SAM9X25
• Manufacturer: Atmel Corporation

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

8.3.1
ARM DDI0198D
Coprocessor pipeline
CPLATECANCEL
Interlocked MCR
CPINSTR[31:0]
CPDOUT[31:0]
CPDIN[31:0]
CHSDE[1:0]
CHSEX[1:0]
nCPMREQ
CPPASS
MCR
MRC
CLK
If the data for an MCR operation is not available inside the ARM9EJ-S core pipeline
during its first Decode cycle, then the ARM9EJ-S core pipeline interlocks for one or
more cycles until the data is available. An example of this is where the register being
transferred is the destination from a preceding LDR instruction. In this situation the
MCR instruction enters the Decode stage of the coprocessor pipeline, and remains there
for a number of cycles before entering the Execute stage.
Figure 8-5 shows an example of an interlocked MCR.
MCR/MRC
Copyright © 2001-2003 ARM Limited. All rights reserved.
Fetch
(interlock)
Decode
WAIT
Decode
WAIT
Execute
(WAIT)
LAST
Execute
(LAST)
Ignored
Figure 8-5 Interlocked MCR
Coproc data
Memory
Coprocessor Interface
Write
8-7