SAM9261 Atmel Corporation, SAM9261 Datasheet - Page 135

• Manufacturer Part Number: SAM9261
• Manufacturer: Atmel Corporation

Specifications of SAM9261

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 240 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: 4
• Ssc: 3
• Sd / Emmc: 1
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: No
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 160
• 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): 1.08 to 1.32
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

6.11
6.11.1
ARM DDI 0165B
Connecting coprocessors
Connecting a single coprocessor
A coprocessor in an ARM9E-S system needs to have 32-bit connections to:
•
•
•
An example of how to connect a coprocessor into an ARM9E-S system is shown in
Figure 6-11.
The logic for Figure 6-11 is as follows:
on RISING CLK
asel = not (DnMREQ and DSEQ) and (not DnRW)
bsel = (not DnMREQ) and (not PASS)
csel = DnMREQ and DSEQ
data from memory (instruction stream and
write data from the ARM9E-S (
read data to the ARM9E-S (
ARM9E-S
Copyright © 2000 ARM Limited. All rights reserved.
csel
RDATA
WDATA
asel
1
0
MRC
1
MCR
).
0
)
Coprocessor
Figure 6-11 Coprocessor connections
LDC
)
ARM9E-S Coprocessor Interface
bsel
1
0
Memory
system
6-19