eCPRI IP User Guide

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ID 683685
Date 9/19/2025
Public
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 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 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. Message Type 5 Flow 4.2.8. Packet Queue 4.2.9. eCPRI Message Type 4.2.10. Error Handling 4.2.11. RX Throttling
4.2.9. eCPRI Message Type x
4.2.9.1. eCPRI Message Type 0- IQ Data Transfer 4.2.9.2. eCPRI Message Type 1- Bit Sequence Transfer 4.2.9.3. eCPRI Message Type 2- Real Time Control Data 4.2.9.4. eCPRI Message Type 3- Generic Data Transfer 4.2.9.5. eCPRI Message Type 4- Remote Memory Access 4.2.9.6. eCPRI Message Type 5- One-Way Delay Measurement 4.2.9.7. eCPRI Message Type 6- Remote Reset 4.2.9.8. eCPRI Message Type 7- Event Indication 4.2.9.9. 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 IP User Guide Archives
8. Document Revision History for the eCPRI IP User Guide

4.1.3. Supported Ethernet Variants

The eCPRI IP pairs with the 25G/10G Ethernet. The eCPRI IP is validated together with the 25G Ethernet for Stratix® 10 designs.

For Stratix® 10 designs, you can select 25G Ethernet IP for H-tile variants and E-tile Hard IP for Ethernet IP for E-tile variants. When you use these IPs, you must set the following parameter values in the IP parameter editor:
  • Select Ethernet Rate if you use E-tile Hard IP for Ethernet IP.
    Note: This option is not available with 25G Ethernet IP. Use Enable 10G/25G dynamic rate switching for 10G data rate.
  • Enable Enable IEEE 1588 parameter to support client PTP message and eCPRI one-way delay measurement. The 25G Ethernet MAC only supports 96-bit (V2) timestamp format.
  • Disable Enable preamble pass-through and Enable TX CRC pass-through parameters.
  • Turn on Enable 10G/25G dynamic rate switching option to switch between 10G and 25G data rates.

For Arria® 10 designs, you can use Low Latency Ethernet 10G MAC IP and 1G/10GbE and 10GBASE-KR PHY IP to implement MAC and PHY respectively for your Ethernet.

For Agilex 5 designs, you can select GTS Ethernet Hard IP. When you use this IP, you must set the following parameter values in the IP parameter editor:

  • Set Enable IEEE 1588 PTP to Enabled.
  • Set FEC mode to IEEE 802.3 BASE-R Firecode (CL 74).
  • Set Ready Latency to 3.
  • Set Bytes to remove from from RX frames to Remove CRC Bytes.
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