Error Correction by Hamming's Code

[[email protected]]

Greetings!

Here is the situation:
I have Static RAM chip, for example, 128Kx8.
And my goal is adding ECC circuit to it. Error Correction Code is based
on Hamming's one.
I believe to achieve the goal I need second SRAM chip in which there
are parity-bits for data-bits stored in first chip. Also I think that
there must be something controlling both of chips - FPGA, CPU,
microcontroller or, best of all, specialized ECC-chip. The question is
in this controlling chip - how to choose and where to find.
Thank you!

 

[Jim Thompson]

Greetings!

Here is the situation:
I have Static RAM chip, for example, 128Kx8.
And my goal is adding ECC circuit to it. Error Correction Code is based
on Hamming's one.
I believe to achieve the goal I need second SRAM chip in which there
are parity-bits for data-bits stored in first chip. Also I think that
there must be something controlling both of chips - FPGA, CPU,
microcontroller or, best of all, specialized ECC-chip. The question is
in this controlling chip - how to choose and where to find.
Thank you!

Doesn't anyone do their own homework anymore ? Sheeeeesh!

...Jim Thompson

 

[PeteS]

Doesn't anyone do their own homework anymore ? Sheeeeesh!

...Jim Thompson

I've wondered that.

I wonder if the posters realise that getting free answers does not
increase their own knowledge? Probably not.

Cheers

PeteS

 

[Rich Grise]

I've wondered that.

I wonder if the posters realise that getting free answers does not
increase their own knowledge? Probably not.

Actually, this guy sounds like he's done some homework, and now he's just
looking for a chip, if there's already one on the market, to do what he
wants done so he doesn't have to write as much code.

Anybody heard of an ECC memory controller chip?

Thanks,
Rich

 

[Martin Riddle]

Actually, this guy sounds like he's done some homework, and now he's just
looking for a chip, if there's already one on the market, to do what he
wants done so he doesn't have to write as much code.

Anybody heard of an ECC memory controller chip?

Thanks,
Rich

Atmel and micron have some IP cores for ECC.
But it looks like only PC based bridges have ECC implemented. Not
standalone.

And it does seem like he did his home work.

Cheers

 

[PeteS]

Atmel and micron have some IP cores for ECC.
But it looks like only PC based bridges have ECC implemented. Not
standalone.

And it does seem like he did his home work.

Cheers

DDR controllers (not just PC based stuff) and later come with ECC embedded.

If the implementation were public? It would probably be trivial to
implement in HDL, which would very probably fit into a tiny CPLD which
could then feed the ECC RAM.

Cheers

PeteS

 

[joseph2k]

Atmel and micron have some IP cores for ECC.
But it looks like only PC based bridges have ECC implemented. Not
standalone.

And it does seem like he did his home work.

Cheers

No, he has not done his homework. If OP had 'e would be using Hanning code
or better instead of Hamming code. Besides a Hamming code IP module is
available at open cores.