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From: atn@cory.Berkeley.EDU (Alan Nishioka)
Newsgroups: sci.electronics
Subject: Question: 10,000 bit wide UART
Message-ID: <10108@pasteur.Berkeley.EDU>
Date: 19 Feb 89 19:19:13 GMT
Sender: news@pasteur.Berkeley.EDU
Reply-To: atn@cory.Berkeley.EDU (Alan Nishioka)
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Organization: University of California, Berkeley
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    I am trying to build a digital data link, as an experiment, which uses
variable length packets (from 1 to about 10,000 bits in length).

    All of the UART's that I could find only work with up to 9 bit characters.

    Are there any UART's which work with longer bit strings?

    I thought of using Ethernet chips, which should allow the required lengths,
but they are more complicated to control, and are over-kill for my project.

    Are there any good books or references that deal with building a UART?

    Transmitting is not as large a problem as receiving.  I could use FIFO's
for a giant shift register, but I don't know about all the subtle receiving
end considerations (timing recovery, clock skew...).

    I greatly appreciate any and all help.
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Alan Nishioka            atn@cory.berkeley.edu            ...!ucbvax!atn%cory