Re: Multicore Cable Tester
From: Watson A.Name - \ (NOSPAM_at_dslextreme.com)
Date: 07/06/04
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Date: Mon, 5 Jul 2004 17:35:09 -0700
"Ian Helie" <ian.helie@ntlworld.com> wrote in message
news:9aJFc.987$Wo6.648@newsfe6-gui.ntli.net...
> Hi,
>
> I am designing a multicore (19 cores) cable tester, I need 19 outputs
routed
> back into 19 inputs. I was going to use a PIC (16F877) connected to 2
x 8255
> multi i/o chips to give me 19 outputs and 19 inputs.
>
> Has anybody got any ideas on a better way of doing this as the 8255
chip is
> outdated.
>
> Can anybody give me the numbers of other multi i/o chips that are
up-to-date
> or have more i/o lines.
>
> Any help will be appreciated.
>
> Yours Hopefully,
>
> Ian Helie.
> GM7VHQ
You can also do it analog. Decode with a 3 to 8 or 4 to 16 decoder, and
then gate a 4051 analog muxer chip.
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