Intel EP80579 Guide

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 112
System Memory Interface (DIMM)—Intel
®
EP80579 Integrated Processor Product Line
Table 28 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 and the number of
devices required to achieve the given capacity. A single-sided DIMM is indicated by 0
parts populated on side B. A double-sided DIMM has parts populated on both sides.
For each configuration, an additional DRAM part per side is required to support ECC
bits. A x8 part provides all the bits required for ECC.
In the 64b configuration, the minimum capacity supported by the memory controller is
256 MB and the maximum capacity supported is 4 GB.
Table 29 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.
Note: In the 32b mode, all unused EP80579 DDR2 Data Bus Interface signals should be
pulled high to DDR2 1.8V through 10 Kohm resistors.
Table 30 shows the supported DDR2 device speed grades for single and Dual DIMMs.
Dual DIMM support uses 2N or 2T command/address timing.
Table 28. Supported DRAM Capacity for 64-bit Mode
Total DRAM
Capacity
DRAM Technology
Total # of Parts
on Side A
(without ECC)
Total # of Parts
on Side B
(without ECC)
DRAM Part
Density
DRAM Part
Width
256 MB 256 Mb x8 8 0
512 MB
256 Mb x8 8 8
512 Mb x8 8 0
1 GB
512 Mb x8 8 8
1 Gb x8 8 0
2 GB
1 Gb x8 8 8
2 Gb x8 8 0
4 GB 2 Gb x8 8 8
Table 29. Supported DRAM Capacity for 32-bit Mode
Total DRAM
Capacity
DRAM Technology
Total # of Parts on
Side A
(without ECC)
Total # of Parts on
Side B
(without ECC)
DRAM
Density
DRAM Part
Width
128 MB 256 Mb x8 4 0
256 MB 512 Mb x8 4 0
512 MB 1 Gb x8 4 0
1GB 2 Gb x8 4 0

Intel EP80579 Specifications

General

Brand	Intel
Model	EP80579
Category	Computer Hardware
Language	English