CPRI Intel® FPGA IP User Guide

ID 683595
Date 5/19/2023
Public
Document Table of Contents

3.15.2. Accessing the Hyperframe Control Words

When you turn on Enable all control word access via management interface in the CPRI parameter editor, you can access the 256 control words in a hyperframe through the CPRI Intel® FPGA IP core CPU interface. The CTRL_INDEX register and the RX_CTRL register support your application in reading the incoming control words, and the L1_CONFIG register, CTRL_INDEX register, and TX_CTRL register support the application in writing to outgoing control words.

Register support provides you access to the full control word. Alternatively, in timing-critical applications, you can access the full control words through the CPRI IP core AUX interface or other dedicated direct interfaces.

Note: Intel® recommends that you use the CPU interface to access the hyperframe control words only in applications that are not timing-critical.