JEDEC JESD232AA PDF

JEDEC JESD232AA – Graphics Double Data Rate (GDDR5X) SGRAM Standard

This document defines the GDDR5X SGRAM memory standard, including features, device operation,electrical charactersitics, timings, signal pin assignments and package.

The purpose of this standard is to define the minimum set of requirements for JEDEC standard compatible4 Gb through 16 Gb x32 GDDR5X SGRAM devices. System designs based on the required aspects of thisstandard will be supported by all GDDR5X SGRAM vendors providing JEDEC standard compatibledevices. Some aspects of the GDDR5X standard such as AC timings were not standardized. Some featuresare optional and therefore may vary among vendors. In all cases, vendor data sheets should be consultedfor specifics.

This standard was created based on the GDDR5 SGRAM standard (JESD212). Each aspect of the changeswere considered and balloted. The accumulation of these ballots were then incorporated to prepare thisGDDR5X SGRAM standard.