Can anyone suggest a single chip 2400 baud modem solution please?
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From: David Eather on 19 May 2010 19:33 On 20/05/2010 4:51 AM, whit3rd wrote: > On May 17, 5:30 am, David Eather<eat...(a)tpg.com.au> wrote: > >>> Can anyone suggest a single chip 2400 baud modem solution please? > >> I should also add in small quantity, PDIP, SOIC or TQFP preferable > > Pull open a set-top box and see what it uses. A Samsung STB > I have handy has Si2400 and Si3015 on the telephone port. The Si3015 is no longer available - but it did lead to some great Si chips sets to do the job - thanks
From: Jon on 20 May 2010 14:32 "David Eather" <eather(a)tpg.com.au> wrote in message news:ocOdneWgH5-p6GnWnZ2dnUVZ_u8AAAAA(a)giganews.com... > On 20/05/2010 4:51 AM, whit3rd wrote: >> On May 17, 5:30 am, David Eather<eat...(a)tpg.com.au> wrote: >> >>>> Can anyone suggest a single chip 2400 baud modem solution please? >> >>> I should also add in small quantity, PDIP, SOIC or TQFP preferable >> >> Pull open a set-top box and see what it uses. A Samsung STB >> I have handy has Si2400 and Si3015 on the telephone port. > > The Si3015 is no longer available - but it did lead to some great Si chips > sets to do the job - thanks It seems to me that many alarm systems still incorporate a 2400 baud modem chipset. --- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---
From: krw on 20 May 2010 18:35
On Thu, 20 May 2010 13:32:22 -0500, "Jon" <No(a)one.com> wrote: > >"David Eather" <eather(a)tpg.com.au> wrote in message >news:ocOdneWgH5-p6GnWnZ2dnUVZ_u8AAAAA(a)giganews.com... >> On 20/05/2010 4:51 AM, whit3rd wrote: >>> On May 17, 5:30 am, David Eather<eat...(a)tpg.com.au> wrote: >>> >>>>> Can anyone suggest a single chip 2400 baud modem solution please? >>> >>>> I should also add in small quantity, PDIP, SOIC or TQFP preferable >>> >>> Pull open a set-top box and see what it uses. A Samsung STB >>> I have handy has Si2400 and Si3015 on the telephone port. >> >> The Si3015 is no longer available - but it did lead to some great Si chips >> sets to do the job - thanks > >It seems to me that many alarm systems still incorporate a 2400 baud >modem chipset. Alarm systems, POS systems, ATMs... For small payloads 2400bps (FSK, etc.) is faster than PCM modems, like V.92. It's far more reliable, too. These things don't need to access the WWW. ;-) |