SAM9G45 Atmel Corporation, SAM9G45 Datasheet - Page 39

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SAM9G45

Manufacturer Part Number
SAM9G45
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of SAM9G45

Flash (kbytes)
0 Kbytes
Pin Count
324
Max. Operating Frequency
400 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
160
Ext Interrupts
160
Usb Transceiver
3
Usb Speed
Hi-Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
2
Uart
5
Lin
4
Ssc
2
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
Yes
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
Yes
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
64
Self Program Memory
NO
External Bus Interface
2
Dram Memory
DDR2/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
ARM DDI0198D
The line length of the cache is determined by the Len field. The Len field is bits [13:12]
for the DCache and bits [1:0] for the ICache. Table 2-9 shows the line length encoding.
The cache type register values for an ARM926EJ-S processor with the following
configuration are shown in Table 2-10:
See Cache Lockdown Register c9 on page 2-26 for more details on Format C for cache
lockdown.
Function
Reserved
Ctype
S
Dsize
Copyright © 2001-2003 ARM Limited. All rights reserved.
separate instruction and data caches
DCache size = 8KB, ICache size = 16KB
associativity = 4-way
line length = eight words
caches use write-back, register 7 for cache cleaning, and Format C for cache
lockdown.
Reserved
Size
Assoc
M
Len
Register bits
[31:29]
[28:25]
[24]
[23:22]
[21:18]
[17:15]
[14]
[13:12]
Table 2-10 Example Cache Type Register format
Value
b000
b1110
b1 = Harvard cache
b00
b0100 = 8KB
b010 = 4-way
b0
b10 = 8 words per line (32 bytes)
Len field
b10
Other values
Table 2-9 Line length encoding
Cache line length
8 words (32 bytes)
Reserved
Programmer’s Model
2-11

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