Intel EP80579 Guide

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 334
System Memory Interface (Memory Down)—Intel
®
EP80579 Integrated Processor Product Line
B.2 Supported Configurations
Table B-17 shows the various DDR2 device density technologies supported by the
EP80579.
B.2.1 Supported DRAM Capacities
Table B-18 shows the various capacity configurations supported by the memory
controller in the 64b mode. The first column shows the total DRAM capacity on the
channel. The remaining columns indicate the DRAM devices features, densities, width,
and the number of devices required to achieve the given capacity. Table B-18 assumes
single rank configurations only because dual-rank memory down configurations are not
supported by the EP80579.
Table B-19 shows the various configurations supported by the memory controller in the
32b mode.In the 32-bit mode only single rank DDR2 devices are supported. In this
mode, the minimum capacity supported by the memory controller is 128 MB and the
maximum capacity supported is 1 GB.
Page size
Minimum number of column locations on any row and are accessed by a single
ACTIVATE command
DRAM devices Multiple DRAM devices together make up a DIMM.
Rank
Defines a set of DRAM chips (on a module) comprising 8-byte wide (64/32 bits) data,
or 9-bytes (72/40 bits) with ECC.
All devices in a Rank are connected by a single chip select. The actual memory size is
not defined. Single-sided memory modules are always single-rank. Double-sided
unbuffered and registered DIMMs are always dual-rank.
Table B-16. DDR Terminology (Sheet 2 of 2)
Acronym Description/Comment
Table B-17. Supported DDR2 Device Densities and Widths
Technology
Support
Device Density Device Width
256 Mb x8 Supported
512 Mb x8 Supported
1 Gb x8 Supported
2 Gb x8 Supported
4 Gb x8 Not Supported
Table B-18. Supported DRAM Capacity for 64-bit Mode
Total DRAM
Capacity
DRAM Technology
Total # of parts
(without ECC)
DRAM Part
Density
DRAM Part
Width
256 MB 256 Mb x8 8
512 MB 512 Mb x8 8
1 GB 1 Gb x8 8
2 GB 2 Gb x8 8

Intel EP80579 Specifications

General

Brand	Intel
Model	EP80579
Category	Computer Hardware
Language	English