ethernet chip

dlh · Joined: 15 Dec 2006

Tibbo uses the Davicom DM9000A ethernet chip in some of their serial device servers. The Davicom chip is +5V tolerant and has an 8 or 16 bit parallel data bus. In 8-bit mode, there are 5 GPIO pins. It interfaces to an external EEPROM for storing MAC, etc. It looks like it might be a good candidate for providing ZBasic chips with a low-level ethernet interface. Here are links to an application note and to the datasheet.

http://www1.cs.columbia.edu/~sedwards/classes/2007/4840/Davicom-DM9000A-Application-Notes.pdf

http://www1.cs.columbia.edu/~sedwards/classes/2007/4840/Davicom-DM9000A-Ethernet-controller.pdf

I have not found a source, however.

stevech · Joined: 23 Feb 2006

I've used and prefer these

WizNet 811MJ
ConnectOne WiFi

My idea is that these modules must off-load IEEE 802.3, IP, TCP, ICMP, ARP. And as in the case of ConnectOne, offload most of the popular high level protocols like FTP, SMTP, SNMP, BSD Sockets. An attached micro (like a ZX) can talk to the ConnectOne via high speed UART serial and do all of these.