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Chapter 3 Hardware

CoreModule 745 Reference Manual 27

Note: The shaded table cells denote power or ground.

Ethernet Interface

The CoreModule 745 supports one Gigabit Ethernet interface. The Ethernet interface is implemented from

the 82574IT Ethernet controller and provides one GLAN interface, which occupies PCI Express port 2. The

Ethernet function supports multi-speed operation at 10/100/1000 Mbps and operates in full-duplex at all

supported speeds or half duplex at 10/100 Mbps while adhering to the IEEE 802.3x flow control

specification.

The Ethernet interface offers the following features:

• Full duplex or half duplex support at 10 Mbps, 100 Mbps, or 1000 Mbps

• In full duplex mode, the Ethernet controller adheres to the IEEE 802.3x Flow Control specification

• In half duplex mode, performance is enhanced by a proprietary collision reduction mechanism

• IEEE 802.3 compatible physical layer to wire transformer

• IEEE 802.3u Auto-Negotiation support

• Fast back-to-back transmission support with minimum interframe spacing (IFS)

• IEEE 802.3x auto-negotiation support for speed and duplex operation

• On-board magnetics (Ethernet isolation transformer)

Table 3-9 describes the pin signals of the Ethernet header which consists of 10 right-angle pins, two rows,

odd/even (1,2) pin sequence, and 0.079" (2mm) pitch.

Note: The shaded table cells denote ground.

9 CON CLK MOUSE Mouse clock

KEY GND Keyboard ground

Table 3-9. Ethernet Interface Pin Signal Descriptions (J10)

Pin # Signal Description

GND Ground

GND

3 MDI0+ Media Dependent Interface 0 +/-

4MDI0-

5 MDI1+ Media Dependent Interface 1 +/-

6MDI1-

7 MDI2+ Media Dependent Interface 2 +/-

8MDI2-

9 MDI3+ Media Dependent Interface 3 +/-

10 MDI3-

NOTE The magnetics (isolation transformer, T1) for the Ethernet header is included on

the CoreModule 745.

Table 3-8. Keyboard/Mouse Interface Pin/Signal Definitions (J15) (Continued)

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 55 56

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