Path: utzoo!attcan!uunet!ncrlnk!ncr-sd!hp-sdd!ucsdhub!ucsd!sdcc6!sdcc19!sdcc15!pa1611
From: pa1611@sdcc15.UUCP (pa1611)
Newsgroups: sci.electronics
Subject: Serial to parallel interface on a Mac
Keywords: Mac, Serial to parallel
Message-ID: <678@sdcc15.UUCP>
Date: 2 Nov 88 07:53:52 GMT
Organization: University of California, San Diego
Lines: 24

Hello there Hardware gurus !!

I've got a problem... I need to convert serial data (asynchronous) to
a synchronous parallel data.  The source of serial data is generated
from the modem port from my MAC 512KE.  (*note from a 9-pin RS422A
differential driver )

	* How do I convert a differential signal (RS422A) to a TTL compatible
	  signal ?  (do I use sn75175 ? 26L32 ?)

	* Okay, to convert asynch serial data to parallel, what is
	the best suited chip to use ?  I have considered:

		Motorola's  MC6850
		General Instruments (or Microchip Tech's)  AY-1013A

Speed is not critical because I'm interfacing a speech chip that
doesn't require a fast data transfer rate !!!


					thanx,

					Ken  Torii
					pa1611@sdcc15.ucsd.edu