eCPRI Intel® FPGA IP User Guide

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ID 683685
Date 2/22/2024
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Document Table of Contents
Document Table of Contents x
1. Introduction 2. Getting Started 3. IP Parameters 4. Functional Description 5. Interface Overview 6. IP Registers 7. eCPRI Intel FPGA IP User Guide Archives 8. Document Revision History for eCPRI Intel® FPGA IP User Guide
1. Introduction x
1.1. Supported Features 1.2. Device Family Support 1.3. eCPRI Intel® FPGA IP Device Speed Grade Support 1.4. Resource Utilization 1.5. Intel® FPGA IP Core Verification 1.6. Release Information
2. Getting Started x
2.1. Installing and Licensing 2.2. Specifying the IP Core Parameters and Options 2.3. 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. 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. Introduction
2. Getting Started
3. IP Parameters
4. Functional Description
5. Interface Overview
6. IP Registers
7. eCPRI Intel FPGA IP User Guide Archives
8. Document Revision History for eCPRI Intel® FPGA IP User Guide

5.10. External ST Sink Interface

Table 41.  Signals of the External ST Sink InterfaceThis table lists the ports from external user logic to L2/L3 parser. All signals are synchronous to ext_sink_clk.
Signal Name Width (Bits) I/O Direction Description
ext_sink_0_valid 1 Input

Avalon® sink valid from external user logic to L2/L3 parser.

User must not drop valid between sop and eop. The only exception is when the ext_sink_0_ready signal deasserts, and you are required to deassert ext_sink_0_valid for three cycles of READY_LATENCY.

ext_sink_0_data DATA_WIDTH Input Avalon® sink write data from external user logic to L2/L3 parser.
ext_sink_0_sop 1 Input Avalon® sink start of packet from external user logic to L2/L3 parser. Indicates the beginning of packet.
ext_sink_0_eop 1 Input Avalon® sink end of packet from external user logic to L2/L3 parser. Indicates the end of packet.
ext_sink_0_empty LOG2 (DATA_WIDTH/8) Input Avalon® sink empty from external user logic to L2/L3 parser. Indicates the number of symbols that are empty, that is, do not represent valid data.
ext_sink_0_ready 1 Output Avalon® sink ready driven from L2/L3 parser. Indicate L2/L3 parser can accept data.
ext_sink_0_error 1 Input Avalon® sink error from external user logic to L2/L3 parser. A bit mask to mark errors affecting the data being transferred in the current cycle.
ext_sink_0_timestamp_request_fingerprint PTP_TS_FP_WIDTH Input Provides the fingerprint of the V2-format 1588 PTP frame currently beginning transmission on the Ethernet link.

Value is valid when the ext_sink_0_sop and ext_sink_0_timestamp_request_valid signals are asserted.

ext_sink_0_timestamp_request_valid 1 Input

Request valid for a timestamp for the transmit frame. This signal is asserted in the same clock cycle when the ext_sink_0_sop is asserted.

Indicates that the ext_sink_0_timestamp_request_fingerprint signal is valid in the current ext_sink_clk clock.

ext_sink_0_tx_egress_timestamp_96b_data 96 Output

Provides the V2-format timestamp when a 1588 PTP frame begins transmission on the Ethernet link. Value is valid when the ext_sink_0_tx_egress_timestamp_96b_valid signal is asserted.

ext_sink_0_tx_egress_timestamp_96b_valid 1 Output

Indicates that the ext_tx_egress_timestamp_96b_data signals are valid in the current ext_sink_clk clock cycle. This signal is meaningful only in the two step clock mode.

ext_sink_0_tx_egress_timestamp_96b_fingerprint PTP_TS_FP_WIDTH Output

Fingerprint signal for current TX packet.

Assigns a fingerprint to a TX packet that is being transmitted, so that the 2-step or 1-step PTP/eCPRI one way delay measurement timestamp associated with the TX packet can be identified. The timestamp returns with the same fingerprint.

Valid only when the ext_sink_0_tx_egress_timestamp_96b_valid is asserted.

ext_sink_0_tx_ingress_timestamp_96b_data 96 Input

Provides the V2-format timestamp when a 1588 PTP frame begins transmission on the Ethernet link.

Value is valid when the ext_sink_0_sop signal is asserted.

ext_sink_1_valid 1 Input

Avalon® sink valid from external user logic to L2/L3 parser.

User must not drop valid between sop and eop. The only exception is when the ext_sink_1_ready signal deasserts, and you are required to deassert ext_sink_1_valid for three cycles of READY_LATENCY.

ext_sink_1_data DATA_WIDTH Input Avalon® sink write data from external user logic to L2/L3 parser.
ext_sink_1_sop 1 Input Avalon® sink start of packet from external user logic to L2/L3 parser. Indicate the beginning of packet.
ext_sink_1_eop 1 Input Avalon® sink end of packet from external user logic to L2/L3 parser. Indicate the end of packet.
ext_sink_1_empty LOG2 (DATA_WIDTH/8) Input Avalon® sink empty from external user logic to L2/L3 parser. Indicates the number of symbols that are empty, that is, do not represent valid data.
ext_sink_1_ready 1 Output Avalon® sink ready driven from L2/L3 parser. Indicate L2/L3 parser can accept data.
ext_sink_1_error 1 Input Avalon® sink error from external user logic to L2/L3 parser. A bit mask to mark errors affecting the data being transferred in the current cycle.
ext_sink_1_timestamp_request_fingerprint PTP_TS_FP_WIDTH Input

Provides the fingerprint of the V2-format 1588 PTP frame currently beginning transmission on the Ethernet link.

Value is valid when the ext_sink_1_sop and ext_sink_1_timestamp_request_valid signals are asserted.

ext_sink_1_timestamp_request_valid 1 Input

Request valid for a timestamp for the transmit frame. This signal is asserted in the same clock cycle when the ext_sink_1_sop is asserted.

Indicates that the ext_sink_1_timestamp_request_fingerprint signal is valid in the current ext_sink_clk clock.

ext_ sink_1_tx_egress_timestamp_96b_data 96 Output

Provides the V2-format timestamp when a 1588 PTP frame begins transmission on the Ethernet link.

Value is valid when the ext_ sink_1_tx_egress_timestamp_96b_valid signal is asserted.

ext_ sink_1_tx_egress_timestamp_96b_valid 1 Output Indicates that the ext_tx_egress_timestamp_96b_data signals are valid in the current ext_sink_clk clock cycle. This signal is meaningful only in a two-step clock mode.
ext_ sink_1_tx_egress_timestamp_96b_fingerprint PTP_TS_FP_WIDTH Output

Fingerprint signal for current TX packet.

Assigns fingerprint to a TX packet that is being transmitted, so that the 2-step or 1-step PTP/eCPRI one way delay measurement timestamp associated with the TX packet can be identified. The timestamp returns with the same fingerprint.

Valid only when the ext_ sink_1_tx_egress_timestamp_96b_valid is asserted.

ext_ sink_1_tx_ingress_timestamp_96b_data 96 Input

Provides the V2-format timestamp when a 1588 PTP frame begins transmission on the Ethernet link.

Value is valid when the ext_sink_1_sop signal is asserted.

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