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- Double_data_rate abstract "In computing, a computer bus operating with double data rate (DDR) transfers data on both the rising and falling edges of the clock signal. This is also known as double pumped, dual-pumped, and double transition. The term toggle mode is used in the context of NAND flash memory.The simplest way to design a clocked electronic circuit is to make it perform one transfer per full cycle (rise and fall) of a clock signal. This, however, requires that the clock signal changes twice per transfer, while the data lines change at most once per transfer. When operating at a high bandwidth, signal integrity limitations constrain the clock frequency. By using both edges of the clock, the data signals operate with the same limiting frequency, thereby doubling the data transmission rate.This technique has been used for microprocessor front side busses, Ultra-3 SCSI, graphics RAM (the AGP bus and GDDR), main memory (both RDRAM and DDR1 through DDR4), and the HyperTransport bus on AMD's Athlon 64 processors. It is more recently being used for other systems with high data transfer speed requirements – as an example, for the output of analog-to-digital converters (ADCs).DDR should not be confused with dual channel, in which each memory channel accesses two RAM modules simultaneously. The two technologies are independent of each other and many motherboards use both, by using DDR memory in a dual channel configuration.An alternative to double or quad pumping is to make the link self-clocking. This tactic was chosen by InfiniBand and PCI Express.".
- Double_data_rate thumbnail SDR_DDR_QDR.svg?width=300.
- Double_data_rate wikiPageID "1154712".
- Double_data_rate wikiPageLength "4921".
- Double_data_rate wikiPageOutDegree "49".
- Double_data_rate wikiPageRevisionID "646900123".
- Double_data_rate wikiPageWikiLink AMD.
- Double_data_rate wikiPageWikiLink Accelerated_Graphics_Port.
- Double_data_rate wikiPageWikiLink Advanced_Micro_Devices.
- Double_data_rate wikiPageWikiLink Analog-to-digital_converter.
- Double_data_rate wikiPageWikiLink Athlon_64.
- Double_data_rate wikiPageWikiLink Beat_(music).
- Double_data_rate wikiPageWikiLink Bus_(computing).
- Double_data_rate wikiPageWikiLink CAS_latency.
- Double_data_rate wikiPageWikiLink Category:Clock_signal.
- Double_data_rate wikiPageWikiLink Category:Digital_electronics.
- Double_data_rate wikiPageWikiLink Clock_signal.
- Double_data_rate wikiPageWikiLink Computer_bus.
- Double_data_rate wikiPageWikiLink Computing.
- Double_data_rate wikiPageWikiLink DDR2_SDRAM.
- Double_data_rate wikiPageWikiLink DDR3_SDRAM.
- Double_data_rate wikiPageWikiLink DDR4_SDRAM.
- Double_data_rate wikiPageWikiLink DDR_SDRAM.
- Double_data_rate wikiPageWikiLink DIMM.
- Double_data_rate wikiPageWikiLink Data_rate_units.
- Double_data_rate wikiPageWikiLink Dual-channel_architecture.
- Double_data_rate wikiPageWikiLink Electronic_circuit.
- Double_data_rate wikiPageWikiLink Flash_memory.
- Double_data_rate wikiPageWikiLink Frequency.
- Double_data_rate wikiPageWikiLink Front-side_bus.
- Double_data_rate wikiPageWikiLink Front_side_bus.
- Double_data_rate wikiPageWikiLink GDDR.
- Double_data_rate wikiPageWikiLink GDDR5.
- Double_data_rate wikiPageWikiLink Hertz.
- Double_data_rate wikiPageWikiLink HyperTransport.
- Double_data_rate wikiPageWikiLink InfiniBand.
- Double_data_rate wikiPageWikiLink LPDDR2.
- Double_data_rate wikiPageWikiLink List_of_device_bit_rates.
- Double_data_rate wikiPageWikiLink Megabytes_per_second.
- Double_data_rate wikiPageWikiLink Megatransfers_per_second.
- Double_data_rate wikiPageWikiLink Mobile_DDR.
- Double_data_rate wikiPageWikiLink Multi-channel_memory_architecture.
- Double_data_rate wikiPageWikiLink PCI_Express.
- Double_data_rate wikiPageWikiLink Parallel_SCSI.
- Double_data_rate wikiPageWikiLink Pumping_(computer_systems).
- Double_data_rate wikiPageWikiLink Quad_data_rate.
- Double_data_rate wikiPageWikiLink RDRAM.
- Double_data_rate wikiPageWikiLink SDRAM.
- Double_data_rate wikiPageWikiLink Self-clocking_signal.
- Double_data_rate wikiPageWikiLink Signal_integrity.
- Double_data_rate wikiPageWikiLink Signaling_(telecommunications).
- Double_data_rate wikiPageWikiLink Signalling_(telecommunications).
- Double_data_rate wikiPageWikiLink Synchronous_dynamic_random-access_memory.
- Double_data_rate wikiPageWikiLink Transfer_(computing).
- Double_data_rate wikiPageWikiLink Upbeat.
- Double_data_rate wikiPageWikiLink XDR_DRAM.
- Double_data_rate wikiPageWikiLink File:SDR_DDR_QDR.svg.
- Double_data_rate wikiPageWikiLinkText ""double pumping"".
- Double_data_rate wikiPageWikiLinkText "DDR SDRAM".
- Double_data_rate wikiPageWikiLinkText "DDR".
- Double_data_rate wikiPageWikiLinkText "Double clocked".
- Double_data_rate wikiPageWikiLinkText "Double data rate".
- Double_data_rate wikiPageWikiLinkText "both rising and falling edges".
- Double_data_rate wikiPageWikiLinkText "double data rate".
- Double_data_rate wikiPageWikiLinkText "double pumped".
- Double_data_rate wikiPageWikiLinkText "double pumping".
- Double_data_rate wikiPageWikiLinkText "effective transmission rate".
- Double_data_rate wikiPageWikiLinkText "memory interfaces".
- Double_data_rate hasPhotoCollection Double_data_rate.
- Double_data_rate wikiPageUsesTemplate Template:Refimprove.
- Double_data_rate wikiPageUsesTemplate Template:Reflist.
- Double_data_rate subject Category:Clock_signal.
- Double_data_rate subject Category:Digital_electronics.
- Double_data_rate type Article.
- Double_data_rate type Article.
- Double_data_rate comment "In computing, a computer bus operating with double data rate (DDR) transfers data on both the rising and falling edges of the clock signal. This is also known as double pumped, dual-pumped, and double transition. The term toggle mode is used in the context of NAND flash memory.The simplest way to design a clocked electronic circuit is to make it perform one transfer per full cycle (rise and fall) of a clock signal.".
- Double_data_rate label "Double data rate".
- Double_data_rate sameAs Double_Data_Rate.
- Double_data_rate sameAs Double_Data_Rate.
- Double_data_rate sameAs نرخ_دوبرابر_دادهها.
- Double_data_rate sameAs Double_data_rate.
- Double_data_rate sameAs Double_Data_Rate.
- Double_data_rate sameAs Double_data_rate.
- Double_data_rate sameAs m.04bvvd.
- Double_data_rate sameAs Двострука_брзина_преноса_података.
- Double_data_rate sameAs Q1251396.
- Double_data_rate sameAs Q1251396.
- Double_data_rate wasDerivedFrom Double_data_rate?oldid=646900123.
- Double_data_rate depiction SDR_DDR_QDR.svg.
- Double_data_rate isPrimaryTopicOf Double_data_rate.