SAM9261 Atmel Corporation, SAM9261 Datasheet - Page 98

• 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

Memory Interface
4-22
The fields extracted by the ARM9E-S are shown in Table 4-12.
When performing a word load, the ARM9E-S can rotate the data returned internally if
the address used is unaligned. Refer to the ARM Architectural Reference Manual for
more details.
When connecting 8-bit to 16-bit memory systems to the ARM9E-S, you must make sure
that the data is presented to the correct byte lanes on the ARM9E-S as shown in
Table 4-13 and Table 4-14.
DMAS[1:0]
10
DMAS[1:0]
01
01
DMAS[1:0]
00
00
00
00
Copyright © 2000 ARM Limited. All rights reserved.
DA[1:0]
00
01
10
11
DA[1:0]
XX
DA[1:0]
0X
1X
Little-endian
CFGBIGEND = 0
RDATA[7:0]
RDATA[15:8]
RDATA[23:16]
RDATA[31:24]
Little-endian
CFGBIGEND = 0
RDATA[31:0]
Little-endian
CFGBIGEND = 0
RDATA[15:0]
RDATA[31:16]
Table 4-13 Halfword accesses
Table 4-12 Word accesses
Table 4-14 Byte accesses
Big-endian
CFGBIGEND = 1
RDATA[31:24]
RDATA[23:16]
RDATA[15:8]
RDATA[7:0]
Big-endian
CFGBIGEND = 1
RDATA[31:0]
Big-endian
CFGBIGEND = 1
RDATA[31:16]
RDATA[15:0]
ARM DDI 0165B