301467-005 Datasheet, PDF (17/426 Pages) Intel Corporation – Express Chipset

Introduction
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1 Introduction
The Intel^® 91x Express chipset family is designed for use with the Intel^® Pentium^® 4 processor /
Intel^® Celeron^® D processor (Intel^® 915G/915GV/915GL/915P/915PL chipsets) or Intel^®
Celeron^® processor (Intel^® 910GL chipset) in desktop platforms. Each chipset in the family
contains two components: GMCH (or MCH) for the host bridge and I/O Controller Hub 6 (ICH6)
for the I/O subsystem. The 82915G GMCH is part of the 915G Express chipset, the 82915GV is
part of the 915GV Express chipset, the 82915GL is part of the 915GL Express Chipset, the
82910GL is part of the 910GL Express chipset, the 82915P MCH is part of the 915P Express
chipset, and the 82915PL is part of the 915PL Express chipset. The ICH6 is the sixth generation
I/O Controller Hub and provides a multitude of I/O related functions. Figure 1-1 shows an
example system block diagram for the 915G Express chipset, Figure 1-2 shows an example
system block diagram for the 915P Express chipsets, Figure 1-3 shows an example system block
diagram for the 915GV Express chipset, Figure 1-4 shows an example system block diagram for
the 910GL Express chipsets, Figure 1-5 shows an example system block diagram for the 915PL
Express chipsets, and Figure 1-6 shows an example system block diagram for the 915GL Express
chipsets.
This document is the datasheet for the Intel^® 82915G Graphics and Memory Controller Hub
(GMCH), Intel^® 82915GV Graphics and Memory Controller Hub (GMCH), Intel^® 82915GL
Graphics and Memory Controller Hub (GMCH), Intel^® 82910GL Graphics and Memory
Controller Hub (GMCH), Intel^® 82915P Memory Controller Hub (MCH), and the Intel^® 82915PL
Memory Controller Hub (MCH). Topics covered include; signal description, system memory
map, PCI register description, a description of the (G)MCH interfaces and major functional units,
electrical characteristics, ballout definitions, and package characteristics.
The difference between the 82915G GMCH and 82915P MCH is that the 82915G GMCH
contains an integrated graphics port (and associated SDVO and analog display ports) and the
82915P MCH does not contain these items. Both devices support PCI Express graphics. The
82915GV GMCH contains an integrated graphics port (and associated SDVO and analog display
ports), but does not support PCI Express graphics. The 82915GL GMCH has the same features as
the 82915GV GMCH, but only supports DDR memory. The 82915PL GMCH has the same
features as the 82915P GMCH, but only supports 2 channels of DDR DIMM memory to a
maximum of 1-DIMM per channel. The 82910GL GMCH supports only 533 MHz FSB, contains
an integrated graphics port (and associated SDVO and analog display ports), does not support PCI
Express graphics, and supports only 2 channels of DDR DIMM memory to a maximum of 1-
DIMM per channel.
Note:
Unless otherwise specified, the information in this document applies to the 82915G Graphics and
Memory Controller Hub (GMCH), 82915GV Graphics and Memory Controller Hub (GMCH),
82915GV Graphics and Memory Controller Hub (GMCH), 82910GL Graphics and Memory
Controller Hub (GMCH), 82915PL Memory Controller Hub (MCH), and the 82915P Memory
Controller Hub (MCH).
Note: References in this document to PCI Express are for the 82915G, 82915P, and the 82915PL only.
Note: References in this document to the Integrated Graphics Device (IGD) are for the 82915G,
82915GV, 82915GL, and 82910GL only.
Datasheet
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