THE ETHERNET DEVELOPMENT BOARD

THE MAGAZINE FOR COMPUTER APPLICATIONS
Circuit Cellar Online offers articles illustrating creative solutions
and unique applications through complete projects, practical
tutorials, and useful design techniques.

THE ETHERNET DEVELOPMENT BOARD

Lessons from the Trenches Part 1: Putting it all Together
by Fred Eady

Start ı Overview ı Elmerıs Silicon Glue ı Time to Kill ı The CS8900A-CQ ı Software and Firmware ı ICSP and LVP ı Assemble the Ethernet Electronics ı No Floating Allowed ı Installing the Bypass Capacitors ı Pin Point ı Finishing Installation ı Assemble the PIC16F877 Electronics ı The Rest of the Project ı Winding Down ı Finishing Up ı Sources and PDF

FINISHING INSTALLATION

Use Photo 6 to complete the LED, resistor, capacitor, crystal, voltage regulator, and magnetic installations. Pay special attention to the LED installation detail in Photo 7. Also note that the isolation transformer has a pin 1 designator that you should match with the pin 1 dot on the transformerıs printed circuit board pads. If you follow what you see in the photos, everything will fall into place correctly.

Photo 6ıThe lines pointing to the red and green LEDs denote what is normally the cathode of the devices. On the red LED, the marker denotes the anode. Go figure.

Photo 7ıHereıs a closer shot where you can see the markers.

PREVIOUS • NEXT

Circuit Cellar provides up-to-date information for engineers. Visit www.circuitcellar.com for more information and additional articles.
For subscription information, call (860) 875-2199, subscribe@circuitcellar.com or subscribe online. ıCircuit Cellar, the Magazine for Computer Applications. Posted with permission.