AU80610006225AASLBXC 데이터 시트보기 (PDF) - Intel

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AU80610006225AASLBXC

Intel® Atom™ Processor D400 and D500 Series

Intel 

Functional Description

3 Functional Description

3.1

3.1.1

3.1.2

3.1.2.1

System Memory Controller

The system memory controller supports DDR2 and DDR3 (SO-DIMM only protocols)

with one 64 bit wide channel accessing two DIMMs. The controller supports a maximum

of two non-ECC DDR2 DIMMs or two un-buffered DIMMs, single or double sided; thus

allowing up to four device ranks. Intel® Fast Memory Access (Intel® FMA) is

supported.

System Memory Organization Modes

The system memory controller supports only one memory organization mode: single

channel. In this mode, all memory cycles are directed to a single channel.

System Memory Technology Supported

DDR2

The system memory controller supports the following DDR2 Data Transfer Rates, DIMM

Modules and DRAM Device Technologies:

• DDR2 Data Transfer Rates: 667 (PC 5300), non-ECC

— Rawcard C = single sided x16

— Rawcard D = single sided x8

— Rawcard E = double sided x8

• DDR2 Data Transfer Rates: 800 (PC 6400), non-ECC

— Rawcard C = single sided x16

— Rawcard D= single sided x8

— Rawcard E = double sided x8

“Single sided” above is a logical term referring to the number of Chip Selects attached

to the DIMM. A real DIMM may put the components on both sides of the substrate, but

be logically indistinguishable from single sided DIMM if all components on the DIMM are

attached to the same Chip Select signal.

• x8 means that each component has 8 data lines.

• x16 means that each component has 16 data lines.

There is no support for DIMMs with different technologies or capacities on opposite

sides of the same DIMM. If one side of a DIMM is populated, the other side is either

identical or empty.

There is no support for 4Gb and 8Gb technology.

Datasheet

27

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