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3 low pin count (lpc) interface, 1 super i/o, 4 pci bus – IEI Integration IEM-945GSE User Manual

Page 27: 5 pcie bus and fast ethernet, 6 real time clock

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IEM-945GSE ETX 3.0 Module

Page 15

2.5.3 Low Pin Count (LPC) Interface

The Intel® ICH7M LPC interface complies with the LPC 1.1 specifications. The LPC bus

from the Intel® ICH7M can be connected to the following devices:

ƒ Super I/O chipset

2.5.3.1 Super I/O

The super I/O chipset connects to the following devices through the ETX 3.0 connectors

on the IEM-945GSE.

ƒ 2 x serial ports

ƒ 1 x parallel port

ƒ 1 x PS/2

ƒ 1 x Infrared

2.5.4 PCI Bus

The PCI interface on the Intel® ICH7M is compliant with the PCI Revision 2.3

implementation. The PCI bus is connected to the following devices.

ƒ PCI

slots

ƒ ISA slots (through a PCI-to-ISA chip)

2.5.5 PCIe Bus and Fast Ethernet

One PCIe lane is connected to the Realtek RTL8102E LAN chip. The LAN connections

from the LAN chip are connected to the ETX 3.0 connectors.

2.5.6 Real Time Clock

The real time clock in integrated in the Intel® ICH7M. The RTC operates on a 3 V battery

and 32.768 KHz crystal. The RTC keeps track of the time and stores system data even

when the system is turned off.