Intel EP80579 Guide

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 210
Gigabit Ethernet (GbE) Interface—Intel
®
EP80579 Integrated Processor Product Line
19.2 GbE MAC Interface Guidelines
The GbE design guidelines provided in this chapter apply only to the interface between
the GbE MAC interface and the LAN PHY component. See the LAN component’s
documentation for design guidelines, magnetics module and the Physical Interface
Connector (See Figure 135).
19.3 Frequency Requirements
Table 79 provides the frequency of all input clocks in the different modes of operation:
19.4 Gigabit Ethernet Interface Signals
GbE Port0 supports Wake-On-LAN (WOL) hence the GbE Port0 block resides in the
Sustain Voltage rail within EP80579. It is required that all GbE Port0 (Transmit/Receive)
interface signals on the platform be powered with GbE Standby Voltage. GbE Port 1&2
signals are to be powered with the GbE core power voltages.
Figure 135. GbE Controller/LAN Interface Interconnect
EP80579
Magnetics
Module
Connector
GbE LAN
Interface
(PHY)
GbE
MAC
TX data/
control
RX data/
control
Table 79. Frequencies of All Input Clocks
Model Clock Name Frequency
RMII
GBE_REFCLK 50 MHz ± 50 ppm
GBE_REFCLK_RMII 50 MHz ± 50 ppm
RGMII
GBEn_RxCLK 2.5/25/125 MHz
GBE_REFCLK 125 MHz± 50 ppm

Intel EP80579 Specifications

General

Brand	Intel
Model	EP80579
Category	Computer Hardware
Language	English