CPRI™ is a standard for communication between a Radio Equipment Controller (REC) or Base Station and one or more Radio Equipment (RE) units in a cellular network. By defining a publicly available specification for the key internal interface between these units, an independent technology evolution is fostered for cellular equipment products. This Figure shows the position of the interface within a cellular system. The CPRI v8.11 core has been designed to the CPRI Specification v7.0 [Ref 1] .
The CPRI core implements Layer 1 and Layer 2 of the CPRI specification in Versal™ ACAP, UltraScale™ devices, Zynq ® -7000 SoCs, and 7 series devices.