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Mobile Intel
®
915GME Express Chipset —Theory of Operation
Mobile Intel
®
915GME Express Chipset
Development Kit User’s Manual April 2007
24 Order Number: 317230-001US
3.4.2.3 On-Board LAN
The 82562EZ provides the PHY for the Intel ICH6-M’s integrated LAN connect interface.
This provides a low cost, reduced footprint solution for 10/100 Mbit LAN connectivity.
The 82562EZ component is connected to the ICH6-M chipset through the LAN Connect
Interface (LCI) and to an RJ45 connector at J5A1A with built in magnetic decoupling.
Access to this interface is provided on the rear I/O panel (See Figure 3 on page 36).
Features of the 82562EZ are as follows:
• IEEE* 802.3 10BASE-T/100BASE-TX compliant physical layer interface
• IEEE 802.3u Auto-Negotiation support
• Digital Adaptive Equalization control
• Link status interrupt capability
• XOR Tree mode support for board testing
• Three-port LED support (speed, link, and activity)
• 10BASE-T auto-polarity correction
• Platform LAN connect interface support
• 82540EM layout compatible
• Diagnostic loopback mode
• 1:1 transmit transformer ratio support
• Low power (less than 300 mW in active transmit mode)
• Reduced power in “unplugged mode” (less than 50 mW)
• Automatic detection of “unplugged mode”
3.4.2.4 AC’97 and High Definition Audio
AC’97 and High Definition Audio are not supported on the board.
3.4.2.5 ATA / Storage
The Mobile Intel
®
915GME Express Chipset provides one parallel ATA IDE connector
and two serial ATA connectors. The parallel ATA IDE Connector is a standard 40-pin
0.1” center header at J7J2 for a desktop IDE drive. A power connector is supplied on
the Mobile Intel
®
915GME Express Chipset to power a parallel ATA hard disk drive at
J4J2. One of the two serial ATA connectors on the Mobile Intel
®
915GME Express
Chipset is a direct connect connector; located at J8J3. The other serial ATA connector
is broken up into two connectors. One connector is for the serial data signals, and the
other is for to power the serial ATA hard disk drive. These connectors are located at
J7H1 and J6H3. A green LED at CR7J1 indicates activity on ATA channel.
The Mobile Intel
®
915GME Express Chipset also supports ‘ATA swap’ capability for both
the parallel IDE channel and the serial ATA channels. The parallel IDE device should be
powered from the power connector, J4J2, on the Mobile Intel
®
915GME Express Chipset
to utilize the hot swap feature. This feature requires customer-developed software
support.
3.4.2.6 USB Connectors
The ICH6-M provides a total of eight USB 2.0 ports. Three ports are routed to a triple-
stack USB connector at J3A1. Two ports are routed to a combination RJ-45/dual USB
connector at J5A1B. Two ports are routed to a USB front panel header at J6H2. The
final USB port is routed to the PCI Express Docking Connector at J9J4.