Ethernet PHY - Transformerless Application Notes for Microchip's KSZ and LAN Devices

Transformerless application schematic configuration for KSZ and LAN devices are different. You should base your design on two distinct application notes.

Whenever you implement a magnetic-less interface, we recommend operating the link under the following conditions:

  • 100 BASE-TX,
  • full duplex operation with auto-negotiation disabled,
  • and auto MDIX disabled on both sides of the link.

These allow the link to operate in the most reliable and stable mode for your design.

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