Datasheet

Functional Description
270 Datasheet
Table 19 is a sample dual channel asymmetric memory configuration showing the rank
organization with Intel
®
Flex Memory Mode Enabled.
10.2.1.2.3 Dual Channel Asymmetric Mode with Intel
®
Flex Memory Mode Disabled
In this addressing mode addresses start in channel 0 and stay there until the end of the
highest rank in channel 0, and then addresses continue from the bottom of channel 1
to the top.
This mode is used when Intel
®
Flex Memory Mode is disabled and both Channel A and
Channel B DIMMs are populated in any order with the total amount of memory in each
channel being different.
Table 20 is a sample dual channel asymmetric memory configuration showing the rank
organization with Intel
®
Flex Memory Mode Disabled:
10.2.2 System Memory Technology Supported
The MCH supports the following DDR2 Data Transfer Rates, DIMM Modules, and DRAM
Device Technologies:
• DDR2 Data Transfer Rates: 667 (PC2-5300) and 800 (PC2-6400)
• DDR2 DIMM Modules:
— Raw Card C - Single Sided x16 un-buffered non-ECC
— Raw Card D - Single Sided x8 un-buffered non-ECC
— Raw Card E - Double Sided x8 un-buffered non-ECC
— Raw Card F - Single Sided x8 un-buffered ECC
— Raw Card G - Double Sided x8 un-buffered ECC
• DDR2 DRAM Device Technology: 512-Mb and 1-Gb
Table 19. Sample System Memory Dual Channel Asymmetric Organization Mode with
Intel
®
Flex Memory Mode Enabled
Rank
Channel 0
population
Cumulative top
address in
Channel 0
Channel 1
population
Cumulative top
address in
Channel 1
Rank 3 0 MB 2048 MB 0 MB 2304 MB
Rank 2 0 MB 2048 MB 256 MB 2304 MB
Rank 1 512 MB 2048 MB 512 MB 2048 MB
Rank 0 512 MB 1024 MB 512 MB 1024 MB
Table 20. Sample System Memory Dual Channel Asymmetric Organization Mode with
Intel
®
Flex Memory Mode Disabled
Rank
Channel 0
population
Cumulative top
address in
Channel 0
Channel 1
population
Cumulative top
address in
Channel 1
Rank 3 0 MB 1280 MB 0 MB 2304 MB
Rank 2 256 MB 1280 MB 0 MB 2304 MB
Rank 1 512 MB 1024 MB 512 MB 2304 MB
Rank 0 512 MB 512 MB 512 MB 1792 MB