Based on its datasheet, ENC28J60 adopts IEEE 802.3 compatible with ethernet or can be used as an ethernet controller. In other words, ENC28J60 is a micro (chip) with one function that is able to encapsulate (re: encapsulation, generally is a process that makes one type of data network packets into other data types) data using internet or intranet network according to chip configuration which works at 20MHz-25MHz frequency and voltage between 3.14VDC-3.45VDC.

1: chip board ENC28J60-I/SO

2: 25MHZ crystal

3: the network interface board HR911105A

4: 3.3 V power supply pin

5: the board size of 56 (mm) x 34 (mm)

How to wire ENC28J60: