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About This Item

 

Full Description

This document defines the Graphics Double Data Rate 5 (GDDR5) Synchronous Graphics Random Access Memory (SGRAM) standard, including features, functionality, package, and pin assignments. This scope may be expanded in future to also include other higher density devices.

The purpose of this Standard is to define the minimum set of requirements for JEDEC standard compatible 512 Mb through 8 Gb x32 GDDR5 SGRAM devices. System designs based on the required aspects of this standard will be supported by all GDDR5 SGRAM vendors providing JEDEC standard compatible devices. Some aspects of the GDDR5 standard such as AC timings and capacitance values were not standardized. Some features are optional and therefore may vary among vendors. In all cases, vendor data sheets should be consulted for specifics.

This standard was created based on the DDR Standard (JESD79) and some aspects of the GDDR4 Standard (JESD21C - 3.11.5.8). Each aspect of the changes for high speed operation were considered and balloted. The accumulation of these ballots were then incorporated to prepare this GDDR5 SGRAM document, replacing whole sections and incorporating the changes into Functional Description and Operation.

 

Document History

  1. JEDEC JESD212C.01

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    Graphics Double Data Rate (GDDR5) SGRAM Standard

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  2. JEDEC JESD212C


    Graphics Double Data Rate (GDDR5) SGRAM Standard

    • Historical Version
  3. JEDEC JESD212B.01


    Graphics Double Data Rate (GDDR5) SGRAM Standard

    • Historical Version
  4. JEDEC JESD212B


    Graphics Double Data Rate (GDDR5) SGRAM Standard

    • Historical Version
  5. JEDEC JESD212A


    GDDR5 SGRAM

    • Historical Version
  6. JEDEC JESD 212


    GDDR5 SGRAM

    • Historical Version