eCPRI IP User Guide

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ID 683685
Date 7/28/2025
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Document Table of Contents
Document Table of Contents x
1. About the eCPRI IP 2. Getting Started 3. eCPRI IP Parameters 4. Functional Description 5. Interfaces 6. eCPRI IP Registers 7. eCPRI Intel FPGA IP User Guide Archives 8. Document Revision History for the eCPRI IP User Guide
1. About the eCPRI IP x
1.1. eCPRI IP Features 1.2. eCPRI IP Device Family Support 1.3. eCPRI IP Device Speed Grade Support 1.4. eCPRI IP Resource Utilization 1.5. IP Core Verification 1.6. eCPRI IP Release Information
2. Getting Started x
2.1. Installing and Licensing the eCPRI IP 2.2. Specifying the eCPRI IP Parameters 2.3. eCPRI IP Generated File Structure 2.4. Simulating the eCPRI IP 2.5. Compiling the Full Design and Programming the FPGA
2.2. Specifying the eCPRI IP Parameters x
2.2.1. Reference and System PLL Clock for your IP Design
4. Functional Description x
4.1. High Level Data Path Flow 4.2. Operation of the eCPRI IP Blocks
4.1. High Level Data Path Flow x
4.1.1. Transmit TX Path 4.1.2. Receive RX Path 4.1.3. Supported Ethernet Variants
4.2. Operation of the eCPRI IP Blocks x
4.2.1. Packet Classifier 4.2.2. Ethernet Header Insertion/Removal 4.2.3. Concatenation/De-concatenation 4.2.4. Header Mapper/De-Mapper 4.2.5. eCPRI IWF Type 0 4.2.6. eCPRI Message 5 Packet Parser 4.2.7. Packet Queue 4.2.8. eCPRI Message Type 4.2.9. Error Handling 4.2.10. RX Throttling
4.2.8. eCPRI Message Type x
4.2.8.1. eCPRI Message Type 0- IQ Data Transfer 4.2.8.2. eCPRI Message Type 1- Bit Sequence Transfer 4.2.8.3. eCPRI Message Type 2- Real Time Control Data 4.2.8.4. eCPRI Message Type 3- Generic Data Transfer 4.2.8.5. eCPRI Message Type 4- Remote Memory Access 4.2.8.6. eCPRI Message Type 5- One-Way Delay Measurement 4.2.8.7. eCPRI Message Type 6- Remote Reset 4.2.8.8. eCPRI Message Type 7- Event Indication 4.2.8.9. eCPRI Message Type 64- 255 Vendor Specific
5. Interfaces x
5.1. eCPRI IP Clock Signals 5.2. Power, Reset, and Firewalls Signals 5.3. TX Time of Day Interface 5.4. RX Time of Day Interface 5.5. Interrupt 5.6. Configuration Avalon® Memory-Mapped Interface 5.7. Ethernet MAC Source Interface 5.8. Ethernet MAC Sink Interface 5.9. External ST Source Interface 5.10. External ST Sink Interface 5.11. eCPRI IP Source Interface 5.12. eCPRI IP Sink Interface 5.13. Miscellaneous Interface Signals 5.14. IWF Type 0 eCPRI Interface 5.15. IWF Type 0 CPRI MAC Interface
5.2. Power, Reset, and Firewalls Signals x
5.2.1. Reset Control and Initialization Flows
5.7. Ethernet MAC Source Interface x
5.7.1. E-tile Hard IP for Ethernet 1588 PTP Signals 5.7.2. 25G Ethernet MAC 1588 PTP Signals 5.7.3. 10G Ethernet MAC 1588 PTP Signals 5.7.4. F-Tile Ethernet Hard IP 1588 PTP Signals 5.7.5. Agilex 5 Device Ethernet Hard IP 1588 PTP Signals
5.14. IWF Type 0 eCPRI Interface x
5.14.1. IWF Source Interface 5.14.2. IWF Sink Interface
5.15. IWF Type 0 CPRI MAC Interface x
5.15.1. CPRI 32-bit IQ Data TX Interface 5.15.2. CPRI 64-bit IQ Data TX Interface 5.15.3. CPRI 32-bit Ctrl_AxC TX Interface 5.15.4. CPRI 64-bit Ctrl_AxC TX Interface 5.15.5. CPRI 32-bit Vendor Specific TX Interface 5.15.6. CPRI 64-bit Vendor Specific TX Interface 5.15.7. CPRI 32-bit Real-time Vendor Specific TX Interface 5.15.8. CPRI 64-bit Real-time Vendor Specific TX Interface 5.15.9. CPRI Gigabit Media Independent Interface (GMII) 5.15.10. CPRI IP L1 Control and Status Interface
1. About the eCPRI IP
2. Getting Started
3. eCPRI IP Parameters
4. Functional Description
5. Interfaces
6. eCPRI IP Registers
7. eCPRI Intel FPGA IP User Guide Archives
8. Document Revision History for the eCPRI IP User Guide

1.1. eCPRI IP Features

The IP offers the following features:
  • Compliant with the eCPRI Specification V2.0 (2018-06-25) available on the CPRI Industry Initiative (CII) website.
  • eCPRI radio equipment controller (eREC) and eCPRI radio equipment (eRE) module configurations.
  • Ethernet headers in a variety of formats, including VLAN tag, source/destination MAC address, IPv4, UDP extraction and encapsulation.
  • eCPRI one-way delay measurement based on IEEE Standard 1588 Precision Time Protocol (1588 PTP) hardware timestamp. Full hardware support, and required 1588 PTP software stack.
  • 25 Gbps and 10 Gbps Ethernet ports.
  • Pairing of eCPRI Intel FPGA IP with O-RAN Intel FPGA IP.
  • Interworking function (IWF) type 0 between eCPRI node and one CPRI node.
  • Ethernet streaming frame size up to 9,000 bytes as defined by Ethernet jumbo frames standard.
  • Packet classifier to classify eCPRI packet and send packets to eCPRI IP. The IP redirects all other packets to external port for user processing.
  • Programmable packet queue (maximum 16 entries) holds incoming packets when eCPRI packets transmission in progress.
  • Arbitration between eCPRI packet and external incoming Ethernet frames, e.g., Control & Management (C&M) and synchronization packets.
  • Mapping logic between eCPRI message physical channel ID to VLAN/MAC address CSR.
  • Single distributed unit (DU) and up to eight radio unit (RU) configurations using source/destination MAC address CSR.
  • All eCPRI message types compliant to eCPRI specification v2.0
  • Input and output ports compliant with Avalon® streaming interface .
Table 1.   eCPRI IP Feature Matrix
Device Support Data Rate
Agilex™ 5 10G
25G
Agilex™ 7 25G
10G
Agilex™ 9 10G
25G
Stratix® 10 25G
10G
Arria® 10 10G
Related Information
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