Supermicro PDSG4 User Manual download pdf (Page 17)

Chapter 1: Introduction

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1-2 Chipset Overview

Intel’s Glenwood (955X) chipset, designed for use with the Pentium 4 Dual Core

LGA 775 CPU, is comprised of two primary components: the Memory Controller

Hub (MCH) and the I/O Controller Hub (ICH7R). In addition, Intel's PCI-X (PXH-V)

is used for added functionality. The PDSG4/PDSGE provides the performance and

feature-set required for the high-end desktop and the UP workstation market.

Memory Controller Hub (MCH)

The function of the MCH is to manage the data ﬂ ow between four interfaces: the

CPU interface, DDR2 System Memory Interface, PCI Express Interface, and the

Direct Media Interface (DMI). The MCH is optimized for the Pentium 4/Pentium D

processor in the 90nm process in the LGA775 Land Grid Array Package. It sup-

ports one or two channels of unbuffered ECC DDR2 SDRAM and a PCI-Express

x16 external graphics port.

The I/O Controller (ICH7R) provides the data buffering and interface arbitration re-

quired for the system to operate efﬁ ciently. It also provides the bandwidth needed

for the system to maintain its peak performance. The Direct Media Interface (DMI)

is the interconnect between the MCH and the ICH7R. The ICH7R supports up four

Serial ATA ports, eight USB 2.0 ports and two IDE devices. In addition, the ICH7R

offers the Intel Matrix Storage Technology which provides various RAID options for

data protection and rapid data access. It also supports an integrated High Deﬁ nition

Audio controller for extreme multi-media applications and offers the most advanced

client management through the use of Intel Active Management technology in con-

junction with Intel's next generation Gigabit Ethernet controller.

Intel ICH7R System Features

The I/O Controller Hub provides the I/O subsystem with access to the rest of the

system. Functions and capabilities include:

*PCI Express Base Speciﬁ cation, Rev. 1.0a-compliant

*PCI 2.3 with support for 33 MHz PCI operations

*ACPI Power Management Logic Support

*Integrated Serial ATA host controller with independent DMA operation on four ports,

(with support of SATA I and SATA II HDD)

*Integrated IDE controller supports Ultra ATA 100/66/33

*USB host interface with support for eight USB ports

*Enhanced DMA Controller, interrupt controller, and timer functions

*System Management Bus (SMBus) 2.0 with additional support for I

C devices

*Low Pin Count (LPC) Interface

*Firmware Hub (FWH) Interface

*Audio Codec '97 Rev. 2.3 which provides a link for Audio (up to 6 channels)

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Supermicro PDSG4 User Manual Page 17