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IDTAMB0480

ADVANCEDMEMORYBUFFERFORFULLYBUFFEREDDIMM

COMMERCIALTEMPERATURERANGE

APRIL 2006

2006 Integrated Device Technology, Inc.

DSC - 7042/2

c

COMMERCIAL TEMPERATURE RANGE

FEATURES:

error detection

- Integrated thermal sensor and status indicator

- Supports MEMBIST, IBIST and Virtual Host mode

- Transparent mode and direct access mode for DRAM testing

EXPANDEDFEATURES:

• Wide range DDR Timing Control

• Superfine adjustment for DDR timing

• Wide range of DDR slew rate control

• Slew rate controllable independent of output impedance

• High speed SMBus in test mode

• IBIST IDT PRBS Generator

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

DESCRIPTION:

The fully buffered dual in-line memory module (FB-DIMM) is the next

generation memory architecture to meet the growing memory requirement of

serversandworkstations.TheIDTAdvancedMemoryBuffer(AMB)chipisthe

essential building block located on each FB-DIMM. The IDT AMB receives

commands and data from the host controller to control and write/read data to/

fromtheDRAMsontheDIMM.Commandsandwritedataaresentsouthbound

from the host controller to AMBs in a daisy chain fashion and interpreted by the

target AMB. Status and read data are sent northbound from AMBs to the host

controlleralsoinadaisychainfashion,passingthroughnon-targetAMBs.This

uniquechannelstructurealleviatesbufferloadingissuescommoninregistered

DIMM technology, enabling designers to use a large number of DIMMs within

a single system.

IDTAMB0480complieswiththelatest JEDECdefinedFB-DIMMArchitecture

and Protocol Specification and supports DDR2-533 and DDR2-667 DRAM.

It also enables serial data transfer at 3.2 and 4.0Gbps. The IDTAMB0480

supportsservers,workstations,storagedevicesandcommunicationapplications

that support the next generation FB-DIMM architecture.

IDTAMB0480

PRODUCT

BRIEF

ADVANCED MEMORY BUFFER

FOR FULLY BUFFERED DIMM

MODULES

Host

Memory

Controller

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

14

10

Up to 8 modules

DDR2

DDR2

DDR2

DDR2

IDT

AMB

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

DDR2

IDT

AMB

IDT

AMB

IDT

AMB

FDB MEMORY CHANNEL