ditz@ECN.PURDUE.EDU (Michael R Ditz) (04/28/91)
I found an old circuit board the other day, and do not know what one of the chips is. This is an 18 pin device labeled SSI 202 P. This chip sounds real familiar to me, but I can't remember. The circuit is some kind of homemade telephone interface. Any help, like manufacturer or few word description, would be greatly appreciated. Thanx!!! Mike (ditz@en.ecn.purdue.edu)
rogerm@hpfcso.FC.HP.COM (Roger Mitchell) (04/30/91)
If it has a 3.58 crystal attached to it it may be a DTMF decoder chip if my memory serves me right. Roger Mitchell
whinery@hale.ifa.hawaii.edu (Alan Whinery) (05/03/91)
>>In article <7480017@hpfcso.FC.HP.COM> rogerm@hpfcso.FC.HP.COM (Roger Mitchell) writes: >>If it has a 3.58 crystal attached to it it may be a DTMF decoder chip if >>my memory serves me right. >> Roger Mitchell Yes, it is a Silicon Systems, Inc. DMTF decoder. I have specs and apps. Alan whinery@hale.ifa.hawaii.edu -- ========================================================================= | D. Alan Whinery| The Institute for Astronomy, University of Hawaii | | Technical Genius| Internet: whinery@hale.ifa.hawaii.edu | | Potential Writer| 71350.3005@compuserve.com
chaplin@keinstr.uucp (chaplin) (05/08/91)
In article <7480017@hpfcso.FC.HP.COM> rogerm@hpfcso.FC.HP.COM (Roger Mitchell) writes: >If it has a 3.58 crystal attached to it it may be a DTMF decoder chip if >my memory serves me right. > Roger Mitchell You are correct. I looked it up last night. If you want more info reply by e-mail and I will be glad to correspond (unless lots of people want to see it on this news.group.) -- Roger Chaplin / Instruments Division Engineering / uunet!keinstr!chaplin CI$: 76307,3506 / voice: (216) 498-2815 / FAX: (216) 248-6168 "In the last analysis the customer is the independent auditor. In the merciless light of real use, every flaw will show." - Frederick P. Brooks, Jr.