JEDEC JESD82-531A PDF

This document defines standard specifications of DC interface parameters, switching parameters, and test loading for definition of the DDR5 Clock Driver (CKD) for re-driving the DCK for CUDIMM, CSODIMM and CAMM applications. The DDR5CKD01 Device ID is DID = 0x0531. (5 = DDR5, 3= Clock Driver, 1= rev 01).

The terms ‘DDR5CKD01, Clock Driver, ‘CKD’, or ‘device’ are used interchangeably to refer to this device in the remainder of this specification. Blue text is used to highlight Register Control words “RWxx” and font in some tables for ease of readability throughout the document.

The purpose is to provide a standard for the DDR5CKD01(see Note) logic device, for uniformity, multiplicity of sources, elimination of confusion, ease of device specification, and ease of use.

The designation DDR5CKD01 refers to the part designation of a series of commercial logic parts common in the industry. This designation is normally preceded by a series of manufacturer specific characters to make up a complete part designation.