Intel 82925X, Datasheet

Page: 175 / 242

Functional Description
R
Intel
®
82925X/82925XE MCH Datasheet 175
Figure 10-1. System Memory Styles
Sys_Mem_Styles
Single Channel
CL CL CL
Dual Channel Interleaved
(channels do not have to
match)
Dual Channel Asymmetric
(channels do not have to
match)
CH B
CH A
CH B
CH A
CH B
CH A
0 0
Scheme
XOR Bit 6 => CL
CH A or CH B
CH B
CH A
TOM TOM
CH B0
CH A
TOM
CH A0
CH B
TOM
Table 10-1. Sample System Memory Organization with Interleaved Channels
Rank Channel A
population
Cumulative
top address in
Channel A
Channel B
population
Cumulative
top address in
Channel B
3 0 MB 2560 MB 0 MB 2560 MB
2 256 MB 2560 MB 256 MB 2560 MB
1 512 MB 2048 MB 512 MB 2048 MB
0 512 MB 1024 MB 512 MB 1024 MB
Table 10-2. Sample System Memory Organization with Asymmetric Channels
Rank Channel A
population
Cumulative
top address in
Channel A
Channel B
population
Cumulative
top address in
Channel B
3 0 MB 1280 MB 0 MB 2560 MB
2 256 MB 1280 MB 256 MB 2560 MB
1 512 MB 1024 MB 512 MB 2304 MB
0 512 MB 512 MB 512 MB 1792 MB