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DIMM - Wikipedia


A DIMM or dual in-line memory module comprises a series of dynamic random- access memory ... Another difference is that standard SIMMs have a 32-bit data path, while ... Since Intel's Pentium, ma...

DDR SDRAM Controller - Pipelined - Lattice Semiconductor


Performance may vary when using this IP core in a different density, speed or grade within the LatticeECP3 family. 2. SDRAM data path width of 32 bits.

DDR SDRAM Controller White Paper - Read


Supports SDRAM data path widths of 16, 32, and 64 bits. •. Utilizes two PLL's to .... is one half the burst length that the DDR devices are configured for. During a ...

AN2826: DDR-SDRAM Layout Considerations for MCF547x ... - NXP


Double data rate (DDR) SDRAM—SDRAM that latches command ... cost to a DDR SDRAM system is the addition of discrete termination. Memory. Size ..... had as physically short a path as possible, thus minimizing clock, control, and bus slew ...

An introduction to SDRAM and memory controllers


Second generation of DDR memory (DDR2) scales to higher clock ... programmed burst size. ... Memory mapping. – Arbiter. – Command generator. – Data path ...

Build A PC - Memory


DDR memory comes in a number of different speeds: ... While SDRAM and DDR SDRAM use 64-bit data paths, RDRAM's interface is only 16 bits wide but runs at a higher .... Be sure to check the prices on all the available sizes of memory.

MSC711x Memory Controller Usage Guidelines


The MSC711x memory controller supports double data rate synchronous ..... The DDR memory controller supports a 16-pin or 32-pin data path size. DQ0 is the ...

About Computer Memory - iFixit


Modern processors have L2 cache memory sizes ranging from 128 KB to 2 MB. ... Relative to standard SDRAM, Double Data Rate SDRAM (DDR-SDRAM) doubles the amount of data transferred per ... Their data path is 64 bits (8 bytes) wide.

DDR SDRAM explained - Pctechguide.com


Sep 21, 2011 ... Double Data Rate DDR) SDRAM is the other competing memory ... the amount of data a module can send at once (called the data path) by the ...

Fast Guide to RAM - Reference from WhatIs.com


RAM (random access memory) is memory in which all areas can be written to or read ... size (it's stored in microchip modules) and in the amount of data it can hold. ... These slots connect through a bus or set of electrical paths to the processor .... It has the same technology as DDR SDRAM to enable access on the rising and ....

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Designing for 1Gb DDR SDRAM - Micron


promoting an easy migration path as well as a cost-effective solution. ... double data rate (DDR) synchronous dynamic random access memory (SDRAM). ... array size, the 1Gb has one additional row address, making the array 16,384 rows ...

AN 348: Interfacing DDR SDRAM with Cyclone Devices - Altera


Both the burst length ..... DDR SDRAM Read Data Path in Cyclone Devices .... pins is ±50 ps (approximately ±0.3-inches of FR4 trace length variations). You can ...

Double Data Rate


In the case of the DDR SDRAM this limitation is solved by using a Delay Lock ..... AHB interface that has access to the data path and the core memory controller.