eCPRI Intel® FPGA IP User Guide

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ID 683685
Date 6/21/2024
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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. Interface Overview 6. eCPRI IP Registers 7. eCPRI Intel FPGA IP User Guide Archives 8. Document Revision History for eCPRI Intel® FPGA IP User Guide
1. About the eCPRI IP x
1.1. eCPRI Intel® FPGA IP Features 1.2. eCPRI IP Device Family Support 1.3. eCPRI Intel® FPGA IP Device Speed Grade Support 1.4. eCPRI IP Resource Utilization 1.5. Intel® FPGA IP Core Verification 1.6. eCPRI IP Release Information
2. Getting Started x
2.1. Installing and Licensing 2.2. Specifying the IP Core Parameters and Options 2.3. eCPRI IP Generated File Structure 2.4. Simulating the IP Core 2.5. Compiling the Full Design and Programming the FPGA
2.2. Specifying the IP Core Parameters and Options x
2.2.1. Reference and System PLL Clock for your IP Design
4. Functional Description x
4.1. Interfaces 4.2. High Level Data Path Flow 4.3. Operation of the eCPRI IP Blocks
4.2. High Level Data Path Flow x
4.2.1. Transmit TX Path 4.2.2. Receive RX Path 4.2.3. Supported Ethernet Variants
4.3. Operation of the eCPRI IP Blocks x
4.3.1. Packet Classifier 4.3.2. Ethernet Header Insertion/Removal 4.3.3. Concatenation/De-concatenation 4.3.4. Header Mapper/De-Mapper 4.3.5. eCPRI IWF Type 0 4.3.6. eCPRI Message 5 Packet Parser 4.3.7. Packet Queue 4.3.8. eCPRI Message Type 4.3.9. Error Handling 4.3.10. RX Throttling
4.3.8. eCPRI Message Type x
4.3.8.1. eCPRI Message Type 0- IQ Data Transfer 4.3.8.2. eCPRI Message Type 1- Bit Sequence Transfer 4.3.8.3. eCPRI Message Type 2- Real Time Control Data 4.3.8.4. eCPRI Message Type 3- Generic Data Transfer 4.3.8.5. eCPRI Message Type 4- Remote Memory Access 4.3.8.6. eCPRI Message Type 5- One-Way Delay Measurement 4.3.8.7. eCPRI Message Type 6- Remote Reset 4.3.8.8. eCPRI Message Type 7- Event Indication 4.3.8.9. eCPRI Message Type 64- 255 Vendor Specific
5. Interface Overview 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
5.14. 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. Interface Overview
6. eCPRI IP Registers
7. eCPRI Intel FPGA IP User Guide Archives
8. Document Revision History for eCPRI Intel® FPGA IP User Guide

4.3.1. Packet Classifier

The packet classifier parses the incoming Ethernet frame to identify the types of incoming packets. The incoming packets could be eCPRI packet, PTP packet, or C&M packet with different types of frames ( e.g., standard Ethernet frame, IPv4, and etc.)

Packet classifier redirects eCPRI packets to next component for further processing and classifies a packet as eCPRI packet if all the condition listed in the table below met. The packet classifier sends all non-eCPRI packets and eCPRI packets with non-matching MAC address fields to external Avalon® streaming interface.
Table 13.  Ethernet Frame Format (User Data over Ethernet)
Number of Bits RX Frame Condition
48 MAC Destination address Destination MAC address matches receiver source MAC address.
48 MAC Source address Do not check.
32 (Optional) VLAN tag Packet parser checks for VLAN tag and adjust the offset accordingly.
32 (Optional) Stack VLAN tag Packet parser checks for SVLAN tag and adjusts the offset accordingly.
16 Ethertype (2 Bytes)= IP

Ethertype is equal to 0xAEFE
If eCPRI message transmitted over IP/UDP, the IP supports only IPv4 with UDP.
Table 14.  Ethernet Frame Format with IPv4 (User Data over IP)
No. of Bits IPv4 Header Condition
48 MAC destination address Destination MAC address matches receiver source MAC address.
48 MAC source address Do not check.
32 (Optional) VLAN Tag Packet parser checks for VLAN tag and adjusts the offset accordingly.
32 (Optional) Stack VLAN Tag Packet parser checks for SVLAN tag and adjusts the offset accordingly.
16 Ethertype (2B) = IP Ethertype must be 0x0800 for IPv4.
4 Version Version must be 4'h4.
4 Internet Header Length The value must be 4'h5. The IP does not support IPv4 "Options" field.
6 Differentiated Services Code Point (DSCP) Do not check.
2 Explicit Congestion Notification (ECN) Do not check.
16 Total length Do not check.
16 Identification Do not check.
3 Flags Do not check.
13 Fragment offset Do not check.
8 Time To live Do not check.
8 Protocol The protocol value must be equal to 0x11 for IPv4 with UDP.
16 Header checksum Do not check.
32 Source address Do not check.
32 Destination address Destination IP address matches receiver source IP address.
16 Source port Do not check.
16 Destination port Destination port number matches receiver UDP port number.
16 Length Do not check.
16 Checksum Do not check.
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