Intel® 82545EM/GM, 82546EB/GB GbE Controllers: Design Guide
The Intel® 82545EM and Intel® 82545GM Gigabit Ethernet Controllers are compact components with integrated Gigabit Ethernet Media Access Control (MAC) and physical layer (PHY) functions. The Intel® 82546EB and Intel® 82546GB 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 82546EB/82546GB) in a very small area and can be used for desktop and workstation PC network designs with critical space constraints.
The Intel® 82545EM/82545GM, 82546EB/82546GB integrate Intel’s fourth generation gigabit MAC and PHY to provide a standard IEEE 802.3 Ethernet interface for 1000BASE-T, 100BASE-TX, and 10BASE-T applications (802.3, 802.3u, and 802.3ab, respectively). The controllers are capable of transmitting and receiving data at rates of 1000 Mbps, 100 Mbps, or 10 Mbps. In addition, they provide a 64-bit wide direct Peripheral Component Interconnect (PCI) 2.2 and PCI-X 1.0a compliant interface capable of operating at frequencies up to 133 MHz. The 82546EB/82546GB also deliver dual port PCI-X solutions without added bridge latency. Furthermore, the 82545GM and 82546GB also provide a PCI 2.3 compliant interface.
Their on-board System Management Bus (SMB) port enables network manageability implementations required by information technology personnel for remote control and alerting through the LAN. Using the SMB, management packets can be routed to or from a management processor. The SMB port enables industry standards, such as Intelligent Platform Management Interface (IPMI) and Alert Standard Format (ASF), to be implemented using the 82545EM/82545GM, 82546EB, or 82546GB. In addition, on-chip ASF 1.0 circuitry provides alerting and remote control capabilities with standardized interfaces.
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