DDR3 RDIMMs Channel - Micron

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• Pros Tree Bus Topology � Arrival time skew at • Cons various DRAM devices could be made very small (negligible) � Less data-eye margin 4/12/2007 28 ©2007 <strong>Micron</strong> Technology, Inc. All rights reserved. Comparison of Tree to Fly-By • Pros Fly-By Topology � High bandwidth � It could be terminated • Cons better than tree bus at far end of the bus � Arrival time skew at various DRAM devices
4/12/2007 <strong>DDR3</strong> RDIMM Topology, Simulation, and Timing Command Bus and Timing (Pre-Register and Post-Register)
Page 1 and 2: 4/12/2007 DDR3 RDIMMs Channel Basic
Page 3 and 4: 4/12/2007 DDR3 RDIMM Basics and Int
Page 5 and 6: 4/12/2007 5 ©2007 Micron Technolog
Page 7 and 8: Improved Termination for Post-Regis
Page 9 and 10: 4/12/2007 9 ©2007 Micron Technolog
Page 11 and 12: Improvements to the Data Channel
Page 13 and 14: 4/12/2007 13 ©2007 Micron Technolo
Page 17 and 18: • Controller Break out Impedance
Page 19 and 20: • Ron Nominal Drive strength in o
Page 21 and 22: • Typical RDIMM spacing (UDIMM) T
Page 25 and 26: • Address data eye diagrams at th
Page 27: • Typical frequency response for:
Page 31 and 32: Pre Register Address Timing Example
Page 33 and 34: Post Register Address Timing Exampl
Page 41 and 42: 4/12/2007 DDR3 RDIMM Topology, Simu
Page 49 and 50: DRAM On-Die-Termination (ODT) sugge
Page 51 and 52: • WRITEs at DDR3-1066 4/12/2007 5

DDR3 RDIMMs Channel - Micron

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