Re: Manchester Decoder


John Larkin wrote:
On Mon, 30 Oct 2006 09:57:29 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@xxxxxxxxxxxxxxx> wrote:

Anyone have a simple-minded design for a Manchester Decoder?

Thanks in advance!

...Jim Thompson

If you detect transitions of either direction, and fire a
non-retriggerable one-shot of 0.75T duration, you'll recover an
unambiguous clock. The rest is easy.

John

'Pure' Manchester code can have pathalogical groups of zeros or ones
making decoding impossible. You also need to either use either Async
(start and stop bits), or Sync (leading known sync byte) to be able to
decode reliably.

Luhan

.

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