eCPRI Intel® FPGA IP User Guide

ID 683685
Date 6/21/2024
Document Table of Contents

5.15.4. CPRI 64-bit Ctrl_AxC TX Interface

Table 50.  Signals of CPRI 64-bit Ctrl_AxC Interface
Signal Name Width (Bits) I/O Direction Description
TX Interface
ctr64_axc_tx_ready[N] 8 Input Each asserted bit indicates the CPRI mapper is ready to read Ctrl_Axc data from the corresponding byte of ctrl_axc_tx_data on the next clock cycle.
ctrl64_axc_tx_valid[N] 8 Output Write valid for ctrl_axc_tx_data. Assert bit [n] to indicate that the corresponding byte on the current ctrl_axc_tx_data bus is valid Ctrl_AxC data.
ctrl64_axc_tx_data[N] 64 Output Ctrl_AxC data to be written to the CPRI frame. The CPRI mapper writes the individual bytes of the current value on the ctrl_axc_tx_data bus to the CPRI frame based on the ctrl_axc_tx_ready signal from the previous cycle, and the ctrl_axc_tx_valid signal in the current cycle.
RX Interface
ctrl64_axc_rx_valid[N] 4 Input Assertion of the bit indicates the corresponding byte on the current ctrl64_axc_rx_data bus is valid Ctrl_AxC data.
ctrl64_axc_rx_data[N] 64 Input IQ data received from the CPRI frame. The ctrl64_axc_rx_valid signal indicates valid Ctrl AxC data bytes.