SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 130

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 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): 2
• Uart: 6
• 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): 312
• 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): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

ARM9E-S Coprocessor Interface
6.7
6-14
CDP
CDP
InMREQ is driven LOW to signal when an instruction is entering the Decode stage and
again when it reaches the Execute stage of the pipeline:
•
•
•
Figure 6-7 shows a
Abort.
CDP: ARM processor pipeline
CDP: Coprocessor pipeline
instructions normally execute in a single cycle. Like all the previous cycles,
LATECANCEL
if the coprocessor can accept the instruction for execution, the PASS signal is
driven HIGH during the Execute cycle
if the coprocessor can execute the instruction immediately it drives CHSD[1:0]
with LAST
if the instruction requires a busy-wait cycle, the coprocessor drives CHSD[1:0]
with WAIT and then CHSE[1:0] with LAST.
INSTR[31:0]
LDR with Data Abort
CHSD[1:0]
CHSE[1:0]
Copyright © 2000 ARM Limited. All rights reserved.
DABORT
InMREQ
PASS
CLK
CDP
which is canceled due to the previous instruction causing a Data
CPRT
Execute
Decode
Decode
LAST
Memory
Execute
Execute
Figure 6-7 ARM9E-S late-canceled CDP
Ignored
(latecancelled)
Exception
entry start
Memory
Exception
continues
ARM DDI 0165B