Re: data transfer in serial interface

Ed Casas (edc@ece.ubc.ca) Sat, 15 Apr 2000 11:45:12 -0700 

Date: Sat, 15 Apr 2000 11:45:12 -0700
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: data transfer in serial interface



On Thu, Apr 13, 2000 at 10:02:06PM -0700, Hui John wrote:
> I have one question regarding the data transferred over the serial 
> interface.
> 
> 
> If the following data is send
>     1 0 1 0  1 0 1 0
> 
> but the receiver was only expected 6 bits. what will happen??
> 
> Would it treated the 5th bit as stop bit??

Yes, the extra bit (wouldn't that be 7'th bit?) would be treated
as a stop bit.  If it was the wrong polarity for a stop bit it
would indicate a "framing error."

> if that is the case what about the last two bits of
> data.....where would it go???

Depending on their polarity they would either be ignored or
treated as a start bit for the next character.

-- 
Ed Casas   edc@ece.ubc.ca   http://casas.ece.ubc.ca   +1 604 822-2592