pa1611@sdcc15.UUCP (pa1611) (11/02/88)
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
ralphw@ius3.ius.cs.cmu.edu (Ralph Hyre) (11/07/88)
In article <678@sdcc15.UUCP> pa1611@sdcc15.UUCP (pa1611) writes: [desire for Mac serial<->parallel conversion] >Speed is not critical because I'm interfacing a speech chip that >doesn't require a fast data transfer rate !!! Just curious, why not use the Mac itself to do your speech synthesis? This would save you quite a bit of hardware work. -- - Ralph W. Hyre, Jr. Internet: ralphw@ius3.cs.cmu.edu Phone:(412) CMU-BUGS Amateur Packet Radio: N3FGW@W2XO, or c/o W3VC, CMU Radio Club, Pittsburgh, PA "You can do what you want with my computer, but leave me alone!8-)"
straka@ihlpf.ATT.COM (Straka) (11/08/88)
In article <3499@pt.cs.cmu.edu> ralphw@ius3.ius.cs.cmu.edu (Ralph Hyre) writes: >In article <678@sdcc15.UUCP> pa1611@sdcc15.UUCP (pa1611) writes: >[desire for Mac serial<->parallel conversion] >>Speed is not critical because I'm interfacing a speech chip that >Just curious, why not use the Mac itself to do your speech synthesis? >This would save you quite a bit of hardware work. Not to mention that the (albeit crude) text to speech algorithms for the Mac are contained in a piece of FREE system software called MacInTalk. Pretty slick, eh? There IS some reason that the Mac is a bit more expensive than the typical clone: It does a whole lot more! (But I guess I'm biased!) -- Rich Straka att!ihlpf!straka Avoid BrainDamage: MSDOS - just say no!