----- Original Message ----- From: "alan smith" > On the ENC28J60 part.....any pitfalls you might want to > mention? All the errata! >Looking at this chip for a design, but not sure > about using it yet. Any insight would be appreciated > from you or other readers (things you had to do in > hardware...board layout....etc) The part is easy to use, follow the datasheet and errata. You should probably also look at the current version of the TCP/IP stack to determine the I/O for the LEDs. As I recall, some of my projects LEDs are inverted. It seems somewhere along the line from the early beta stack to the current version, they modified the polarity of the I/O going to the LEDs. Although they made it simple to map the software I/O to a given project (I think a header file with a section called "your board" is used), the polarity is encoded elsewhere. Having to search through the code and flip them everytime the stack is rev'd is a pain. Just a note about using "new" parts (for the sake of the original thread). I probably wouldn't use this part for any new designs (at least the ones that use PICs). The 18F66J60 and its family contain both the processor and the ethernet interface. According to the microchip web site, the ENC28J60 is slightly under $4.00, the 18F66J60 is slightly under $6.00 (single qty.). For 2 bucks you get the processor and a smaller PCB. If your not too worried about using something new, it is probably the way to go. Ken ________________________________________ "Well that never happened in any of the simulations" klumia@adelphia.net -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist