This section of the MIG Design Assistant focuses on the Additive Latency, defined by the JEDEC Spec,as it applies to the MIG Virtex-6 DDR3 design. NOTE: This. JEDEC. STANDARD. Double Data Rate (DDR). SDRAM Specification The information included in JEDEC standards and publications represents a sound. Micron Technology, Inc. All rights reserved. Products and specifications discussed herein are subject to change by Micron without notice.
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DDR3 SDRAM – Wikipedia
Devices that jedex DDR3L, which operate at 1. Views Read Edit View history. Archived from the original on December 19, Retrieved 12 October For the video game, see Dance Dance Revolution 3rdMix.
Not only are they keyed differently, but DDR2 has rounded notches on the side and the DDR3 modules have square notches on the side. Because the hertz is a measure of cycles per second, and no signal cycles more often than every other transfer, describing the transfer rate in units of MHz is technically incorrect, although very common.
High-performance graphics was an initial driver of such bandwidth requirements, where high bandwidth data transfer between framebuffers is required. CL — CAS Latency clock cyclesbetween sending a column address to the memory and the beginning of the data in response. Retrieved 12 December This article is about the computer main memory.
This page was last edited on 17 Novemberat The CPU’s integrated memory controller can then work with either.
DDR3 jeddc were announced in early DDR3 modules are often incorrectly labeled with the prefix PC instead of PC3for marketing reasons, followed by the data-rate. This is because DDR3 memory modules transfer data on a bus that is 64 data bits wide, and since a byte comprises dcr3 bits, this equates to 8 bytes of data per transfer. Archived from the original on Retrieved from ” https: Another benefit is its prefetch bufferwhich is 8-burst-deep.
In addition to bandwidth designations e.
It is typically used during the power-on self-test for automatic configuration of memory modules. In other projects Wikimedia Commons. For the graphics memory, see GDDR3. It is also misleading because various memory timings are given in units of clock cycles, which are half the speed of data transfers.
This reduction comes from the difference in supply voltages: The DDR3L standard is 1. Under this specigication PC is listed as PC The actual DRAM arrays that store the data are similar to earlier types, with similar performance.
Of these non-standard specifications, the highest reported speed reached was equivalent to DDR, as of May DDRDand capacity variants, jeddc can be one of the following:. Memory standards on the way”.
Archived from the original on April 13, This advantage is an enabling technology in DDR3’s transfer speed.