Ddr2 Dimm Ordering Overview; Two-Dimm Implementation - Intel CoreTM 2 Duo Processor User Manual

1.3.2

DDR2 DIMM Ordering Overview

Figure 2
Figure 2.

Two-DIMM Implementation

Intel® 3100
Chipset
The platform requires DDR2-400 DIMMs to be populated in order, starting with the
DIMM furthest from Intel
addition, dual-rank DIMMs must be populated farthest from Intel
a combination of single-rank and dual-rank DIMMs are used. This recommendation is
based on the chip select and on-die termination signals routing requirements of the
DDR2-400 interface. Intel recommends that you check for correct DIMM placement
during BIOS initialization and that all designs follow the DIMM ordering, clock enable
routing, command clock routing, and chip select routing shown in
addressing must be maintained to be compliant with the BIOS code.
The two DIMMs that are provided with the development kit are 1 Gb single-rank
DIMMs. If other memory is used follow the illustrations in
Figure 5.
to populate one dual-rank and one single-rank DIMMs.
two dual-rank DIMMs.
User's Manual
12
shows the DIMM ordering and location.
®
3100 Chipset in a "fill-farthest" approach (see
Figure 3 shows how to populate two single-rank DIMMs.
Can use two Dual-
Rank DIMMs, One
Dual Rank and a
Single, or two single
rank DIMMS
Figure 5
Product Description
Fill Second Fill First
D D
I I
M M
M M
2 3
Figure 2). In
®
3100 Chipset when
Figure 2. This
Figure 3, Figure 4, and
Figure 4 shows how
shows how to populate
June 2007
Order Number: 316639-002