IEI Integration IEM-LX v1.10 - Manual (Page 33)

IEM-LX-800 ETX CPU Module
Page 17
2.6 GeodeLink™ PCI Bridge
2.6.1 Overview
The GeodeLink™ PCI Bridge (GLPCI) module provides a PCI interface for GeodeLink
Interface Unit-based designs. The GLPCI module is composed of six major blocks:
GeodeLink Interface
FIFO/Synchronization
Transaction Forwarding
PCI Bus Interface
PCI Arbiter
The GeodeLink and PCI Bus Interface blocks provide adaptation to the respective buses.
The Transaction Forwarding block provides bridging logic. Some of the features of the
GeodeLink™ PCI Bridge are listed below:
PCI Version 2.2 compliance
32-bit, 66 MHz PCI bus operation
Target support for fast back-to-back transactions
Arbiter support for three external PCI bus masters
Write gathering and write posting for in-bound write requests
Virtual PCI header support
Delayed transactions for in-bound read requests
Zero wait state operation within a PCI burst
Dynamic clock stop/start support for GLIU and PCI clock domains (this is not
CLKRUN support)
Capable of handling out of bound transactions immediately after reset
2.6.2 10/100M Ethernet
A highly integrated and cost-effective single-chip, fast RealTek RTL8100C 10/100M
Ethernet controller is interfaced through first the PCI bus and then through the
GeodeLink™ PCI Bridge to the CPU and system chipset. The RealTek RTL8100C
controller provides 10Mbps or 100Mbps Ethernet connectivity to the IEM-LX-800. Some of
the features of the RealTek RTL8100C are listed below.