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The LAN8700/LAN8700I and LAN8187/LAN8187I are higly-integrated devices designed for 10*100Mbps Ethernet systems. they are based on IEEE 10BAZE-T and 100BAZE-TX standards. The IEEE 802.3-2005 standard for 100BAZE-TX defines networking over two pairs of Category 5 unshielded twisted pair table or Type 1 shielded twisted pair table.

National Application Note AN-1263: Application Note 1263 DP83865 Gig PHYTER V 10/100/1000 Ethernet Physical Layer Design Guide

National Application Note AN-1106: AN-1106 100BASE-X Repeater Management Module

National Application Note AN-757: Measuring Ethernet Tap Capacitance

1. Schematic Diagram
2. Transformer