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Intel
®
IQ31244 Customer Reference Board
22 User’s Manual
4.0 Gigabit Ethernet Interface
The IQ31244 includes an Intel
®
82546EB Dual-Port Gigabit Ethernet Controller on the primary
PCI-X bus. Each port connector, J2 and J3, has a LINK indicator LED on the left side and a
ACTIVITY indicator LED on the right side.
4.1 Intel
®
82546EB Dual-Port Gigabit Ethernet Controller
The Intel
®
82546EB Dual-Port Gigabit Ethernet Controller is a single PCI device with two full
Gigabit Ethernet MAC and PHY layer functions. It provides two standard IEEE 802.3 Ethernet
interfaces with 1000Base-T, 100Base-TX, and 10Base-T applications. The controller manages dual
MAC and PHY functions and directly interfaces with the PCI-X primary bus.
Table 12. Gigabit Ethernet Port Assignment
Pin Symbol
1T/R1ct
2T/R1-
3T/R1+
4T/R2+
5T/R2-
6T/R2ct
7T/R0ct
8T/R0+
9T/R0-
10 T/R3-
11 T/R3+
12 T/R3ct
13 LED1-
14 LED1+
15 LED2-
16 LED2+