Velocity Reviews > ECC- Algorithm

ECC- Algorithm

Hari
Guest
Posts: n/a

 07-26-2006
I am currently working in a development of error detection and
correction algorithm. I found a sample ECC algorithm provided by
Samsung for NAND flash.

Please checkup the algorithm following link.

http://www.samsung.com/Products/Semi...te_256word.txt

The ECC algorithm detects all Single bit errors. It generates 3 ECC
(Parity code) bytes for a given data of 512bytes

We need to generate ECC codes for the original data and corrupted data.
We can generate ECC bytes using the function make_ecc_512(). Later we
need to compare them using the function.compare_ecc_512().

Problem:
It doesn't detects 0000 bits change to 1111 bit. & viceversa. (ie. Data
0x0000 changes to 0xFFFF is detected as NO_ERROR).

Reason:
The ECC generated for 0x0000 and 0xFFFF are the same.

Can anyone help me to resolve the issue.

Thanks in advance.

Regards,
Hari

dcorbit@connx.com
Guest
Posts: n/a

 07-26-2006

Hari wrote:
> I am currently working in a development of error detection and
> correction algorithm. I found a sample ECC algorithm provided by
> Samsung for NAND flash.
>
> Please checkup the algorithm following link.
>
> http://www.samsung.com/Products/Semi...te_256word.txt
>
> The ECC algorithm detects all Single bit errors. It generates 3 ECC
> (Parity code) bytes for a given data of 512bytes
>
> We need to generate ECC codes for the original data and corrupted data.
> We can generate ECC bytes using the function make_ecc_512(). Later we
> need to compare them using the function.compare_ecc_512().
>
> Problem:
> It doesn't detects 0000 bits change to 1111 bit. & viceversa. (ie. Data
> 0x0000 changes to 0xFFFF is detected as NO_ERROR).
>
> Reason:
> The ECC generated for 0x0000 and 0xFFFF are the same.
>
> Can anyone help me to resolve the issue.
>
> Thanks in advance.

You are way off topic here. Probably, comp.programming would have been

closer to your goal.

Try this:
http://www.eccpage.com/

HTH

 Thread Tools

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are Off Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post senthil VHDL 3 11-25-2011 11:58 AM Bapaiah Katepalli VHDL 1 06-23-2006 04:50 PM Jason Coyne Gaijin42 ASP .Net 0 04-08-2004 07:26 PM Ahmed Moustafa Java 0 11-15-2003 06:35 AM Adam VHDL 5 11-08-2003 06:26 PM

Advertisments