Intel 82545 EM, GM Gigabit Ethernet Controller, 82546 EB, GB Dual Port Gigabit Ethernet Controller Design Guide

The Intel® 82545 EM and 82545 GM Gigabit Ethernet Controllers are compact components with integrated Gigabit Ethernet Media Access Control (MAC) and physical layer (PHY) functions. The Intel® 82546 EB and 82546 GB Dual Port Gigabit Ethernet Controllers is a single, compact component with two full integrated MAC and PHY units. Each device enables Gigabit Ethernet implementations (or dual port implementations using the 82546 EB/82546 GB) in a very small area and can be used for desktop and workstation PC network designs with critical space constraints.

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Intel 82545 EM, 82545 GM, 82546 EB, 82546 GB Gigabit Ethernet Controllers Design Guide | Manualzz

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Key features

  • Compact design
  • Integrated MAC and PHY
  • Gigabit Ethernet and dual port support
  • PCI/PCI-X bus interface
  • System Management Bus (SMB) port
  • Low power operation
  • Wake-up support

Frequently asked questions

The 82545 EM/82545 GM, 82546 EB/82546 GB require three power supplies: VDDO (3.3 V I/O), AVDDH (3.3 V analog), DVDD (1.5 V digital), and AVDDL (2.5 V analog).

The controllers support two defined power states: D0 (full power operation) and D3 (low power operation).

To enable wake-up, you must program the appropriate Wake-up Control Register (WUC) and set the LAN wake-up address filters. The PME_N signal can be used to wake the system.

It is recommended to use a 25 MHz parallel resonant crystal with a frequency tolerance of ±30 ppm.

The controllers have a LAN disable function multiplexed on the FL_DATA0 signal (FL_DATA0/LAN_DISABLE#). When this signal is low, the LAN is disabled, the PHY is powered down, and the device enters a low power state.
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