Datasheet

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2048MB Fully Buffered DIMM Server Memory Module

Page 1

CM75FB2048-667

Key Features

 240-pin, Fully Buffered dual in-line memory module (FB-DIMM)

 Ultra high density using 512 MBit SDRAM devices

 CRC and ECC error detection and correction

 Advanced Memory Buffer (AMB)

 256 MB x 72

 JEDEC standard1.5V high speed differential point-to-point link

 Four-bit prefetch architecture

 Off-chip driver (OCD) impedance calibration

 On-die termination (ODT)

 Low profile (1.2”), ideal for 1U rack mount servers

Selection Guide

CM75FB2048-667

MODULE SIZE:

2048 MByte

SPEED:

667: DDR2-667 (8.0 GB/s)

Summary of content (7 pages)

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2048MB Fully Buffered DIMM Server Memory Module CM75FB2048-667 Key Features 240-pin, Fully Buffered dual in-line memory module (FB-DIMM) Ultra high density using 512 MBit SDRAM devices CRC and ECC error detection and correction Advanced Memory Buffer (AMB) 256 MB x 72 JEDEC standard1.5V high speed differential point-to-point link Four-bit prefetch architecture Off-chip driver (OCD) impedance calibration On-die termination (ODT) Low profile (1.
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048MB Fully Buffered DIMM Server Memory Module General Description The CM75FB2048 is a DDR2 Fully Buffered Dual Inline Memory Module (FB-DIMM), designed for applications in which both per-formance and density are critical. This DIMM includes Error Checking and Correcting (ECC) for maximum reliability, and has an Advanced Memory Buffer (AMB) for data, address and control signals to enable fully configured systems.
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2048MB Fully Buffered DIMM Server Memory Module Pin Assignment Pin Front Pin Front Pin Front Pin Back Pin Back Pin Back 1 VDD 41 /PN13 81 VSS 121 VDD 161 /SN13 201 VSS 2 VDD 42 VSS 82 PS4 122 VDD 162 VSS 202 SS4 3 VDD 43 VSS 83 /PS4 123 VDD 163 VSS 203 /SS4 4 VSS 44 RFU 84 VSS 124 VSS 164 RFU1 204 VSS 5 VDD 45 RFU 85 VSS 125 VDD 165 RFU1 205 VSS 6 VDD 46 VSS 86 RFU1 126 VDD 166 VSS 206 RFU1 7 VDD 47 VSS 87 RFU1 127 V
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2048MB Fully Buffered DIMM Server Memory Module Pin Description Pin Name Pin Description Count Note SCK System Clock Input, positive line 1 1 /SCK System Clock Input, negative line 1 1 Primary Northbound Data, positive lines 14 PN[13:0] /PN[13:0] Primary Northbound Data, negative lines 14 PS[9:0] Primary Southbound Data, positive lines 10 /PS[9:0] Primary Southbound Data, negative lines 10 SN[13:0] Secondary Northbound Data, positive lines 14 /SN[13:0] Secondary Northbound Data,
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2048MB Fully Buffered DIMM Server Memory Module Block Diagram Page 5
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2048MB Fully Buffered DIMM Server Memory Module DC Electrical Specifications Absolute Maximum DC Ratings SYMBOL PARAMETER MIN MAX UNITS VDD VDD Supply Voltage Relative to VSS -0.5 2.3 V VTT VTT Supply Voltage Relative to VSS -0.5 2.3 V VCC VDDL Supply Voltage Relative to VSS -0.3 1.75 V -0.3 1.
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2048MB Fully Buffered DIMM Server Memory Module Package Information © Corsair Incorporated, January 2007. Corsair and the Corsair Logo are trademarks of Corsair Incorporated. All other trademarks are the property of their respective owners. Corsair reserves the right to make changes without notice to any products herein.