This section provides PCB design guidelines for LPDDR5 interfaces. Connections
between the adaptive SoC and LPDDR5 device are defined along with physical design
rules and timing constraints.
Important: All routing guidelines in this section must be
followed to achieve the maximum data rates specified in the Versal adaptive SoC
data sheets. Customers could have unique or specific designs with
particular violations of some rules. In these scenarios, design or routing
trade-offs have to be taken in other routing parameters to mitigate the risk.
System-level channel signal integrity simulations are required to evaluate such
trade-offs. It is important to read Required Memory Routing Guidelines for All Interfaces before continuing with this section.
Important: LPDDR5x devices can be
used in place of LPDDR5 devices but should only be operated at the LPDDR5 data
rates as specified in the Versal adaptive SoC data
sheets.