I concur with Jose. The Atmel AVR series packs a lot of bang for the buck. They also come in a 3.3v low power version for use in battery powered systems.
Gene -----Original Message----- From: Leo Ann Boon [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 19, 2003 7:21 PM To: [EMAIL PROTECTED] Subject: Re: [Asterisk-Users] Re: Open source IP phone, maybe? Ubicom's Scenix IP2K. Sxdesign has an SIP phone platform using that chip http://www.sxdesign.com/index.php?page=solutions&submnu=voip Jose Ildefonso Camargo Tolosa wrote: > Hi! > > I think it is a great idea. > > The DS80C400 needs external memory, and/or flash. It have the > Ethernet integrated, but it is really slow (it is 8051 architecture), > and yes, I know it can go up ti 75Mhz, but only gives 18MIPS max. I > would use ATmega128 from atmel (16MIPS at only 16Mhz), take a look at: > http://www.ethernut.de (project using mega128 with Ethernet, includes > schematics). > > It can, in fact (personal experience) give about 0.7 instructions per > clock cycle (media). About 11MIPS @ 16Mhz, or at 14.7456Mhz (for > RS-232 standard speeds) 10.3MIPS. > > There is a free C compiler (very good, I must add). See: > http://winavr.sf.net OR http://www.nongnu.org/avr-libc/ Also see: > http://www.atmel.com and go the the products -> Microcontrollers -> > AVR 8-bit RISC and take a look around. > > Or: http://www.avrfreaks.net/ (a users web site) > > If you like FPGAs and/or ASICs, you could go to: http://www.opencores.org > > Hope this may help you, I would take the project, but I have no time > righ now. Maybe in about 1.5 months, when my degree work is done. > > c-ya! > > Ildefonso Camargo > [EMAIL PROTECTED] > [EMAIL PROTECTED] > >> Message: 3 >> Date: Tue, 19 Aug 2003 13:35:53 -0500 (CDT) >> From: James Sharp <[EMAIL PROTECTED]> >> To: [EMAIL PROTECTED] >> Subject: [Asterisk-Users] Oen source IP phone, maybe? >> Reply-To: [EMAIL PROTECTED] >> >> >> Its another one of my "If I only had time...damn this sleep thing" >> ideas, but I really wonder how hard/cost effective it would be to >> build an open source IP phone or phone adapter (ala ATA). >> >> In about 20 minutes of mulling and research, I figure you could do it >> for about $40 in parts plus coding time... >> >> 1 DS80C400 Ethernet enabled microcontroller with built in IPV4/V6 >> stack $10 >> 1 DSP56K hardware DSP (you may even be able to dispense with this if >> the C400 is fast enough to do the codecing...then you just need a 8 >> or 16 bit DAC/ADC) $10 >> Misc parts/case/whatnot $20. >> >> > > > > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users