SAM9G25 Atmel Corporation, SAM9G25 Datasheet - Page 344
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SAM9G25
Manufacturer Part Number
SAM9G25
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9261.pdf
(1274 pages)
3.SAM9261.pdf
(43 pages)
4.SAM9G25.pdf
(1147 pages)
5.SAM9G25.pdf
(53 pages)
Specifications of SAM9G25
Flash (kbytes)
0 Kbytes
Pin Count
247
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
Lin
4
Ssc
1
Ethernet
1
Sd / Emmc
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
Yes
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
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
- SAM9261 PDF datasheet
- SAM9261 PDF datasheet #2
- SAM9261 PDF datasheet #3
- SAM9G25 PDF datasheet #4
- SAM9G25 PDF datasheet #5
- Current page: 344 of 1147
- Download datasheet (27Mb)
Figure 27-2. Software Hardware Multibit Error Correction Dataflow
344
Configure PMECC :
error correction capability
sector size/page size
NAND write field set to true
spare area desired layout
Move the NAND Page
to external Memory
whether using DMA or
Processor
Copy redundancy from
PMECC user interface
to user defined spare area.
using DMA or Processor.
SAM9G25
Software
NAND Flash
READ PAGE
Operation
PMECC computes
redundancy as the
data is written into
external memory
Hardware
Accelerator
Configure PMECC :
error correction capability
sector size/page size
NAND write field set to false
spare area desired layout
When the table of
syndromes is completed,
use the get_sigma()
function to get the
error location polynomial.
Move the NAND Page
from external Memory
whether using DMA or
Processor
If a sector is corrupted
use the substitute()
function to determine
the syndromes.
Find the error positions
finding the roots of the
error location polynomial.
And correct the bits.
Software
NAND Flash
PROGRAM PAGE
Operation
PMECC computes
polynomial remainders
as the data is read
from external memory
PMECC modules
indicate if at least one
error is detected.
This step can
be hardware assisted
using the PMERRLOC
module.
Hardware
Accelerator
11032A–ATARM–27-Jul-11
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