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.
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