CPRI Intel® FPGA IP User Guide

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ID 683595
Date 4/04/2022
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Document Table of Contents
Document Table of Contents x
1. About the CPRI Intel® FPGA IP Core 2. Getting Started with the CPRI Intel® FPGA IP Core 3. Functional Description 4. CPRI Intel® FPGA IP Core Signals 5. CPRI Intel® FPGA IP Core Registers A. Additional Information
1. About the CPRI Intel® FPGA IP Core x
1.1. CPRI Intel® FPGA IP Core Supported Features 1.2. CPRI Intel® FPGA IP Core Device Family and Speed Grade Support 1.3. Intel® FPGA IP Core Verification 1.4. Resource Utilization for CPRI Intel® FPGA IP Core 1.5. Release Information
1.2. CPRI Intel® FPGA IP Core Device Family and Speed Grade Support x
1.2.1. Device Family Support 1.2.2. CPRI Intel® FPGA IP Core Performance: Device and Transceiver Speed Grade Support
2. Getting Started with the CPRI Intel® FPGA IP Core x
2.1. Installation and Licensing 2.2. Generating CPRI Intel® FPGA IP Core 2.3. CPRI Intel® FPGA IP File Structure 2.4. CPRI Intel® FPGA IP Core Parameters 2.5. Integrating Your Intel® FPGA IP Core in Your Design: Required External Blocks 2.6. Simulating Intel FPGA IP Cores 2.7. Understanding the Testbench 2.8. Running the Design Example 2.9. Compiling the Full Design and Programming the FPGA
2.1. Installation and Licensing x
2.1.1. Intel® FPGA IP Evaluation Mode
2.5. Integrating Your Intel® FPGA IP Core in Your Design: Required External Blocks x
2.5.1. Adding the Transceiver TX PLL IP Core 2.5.2. Adding the Reset Controller 2.5.3. Adding the Transceiver Reconfiguration Controller 2.5.4. Adding the Off-Chip Clean-Up PLL 2.5.5. Adding and Connecting the Single-Trip Delay Calibration Blocks 2.5.6. Transceiver PLL Calibration 2.5.7. Reference and System PLL Clock for your IP Design
3. Functional Description x
3.1. Interfaces Overview 3.2. CPRI Intel® FPGA IP Core Clocking Structure 3.3. CPRI Intel® FPGA IP Core Reset Requirements 3.4. Start-Up Sequence Following Reset 3.5. AUX Interface 3.6. Direct IQ Interface 3.7. Ctrl_AxC Interface 3.8. Direct Vendor Specific Access Interface 3.9. Real-Time Vendor Specific Interface 3.10. Direct HDLC Serial Interface 3.11. Direct L1 Control and Status Interface 3.12. L1 Debug Interface 3.13. Media Independent Interface (MII) to External Ethernet Block 3.14. Gigabit Media Independent Interface (GMII) to External Ethernet Block 3.15. CPU Interface to CPRI Intel® FPGA IP Registers 3.16. Auto-Rate Negotiation 3.17. Extended Delay Measurement 3.18. Deterministic Latency and Delay Measurement and Calibration 3.19. CPRI Intel® FPGA IP Transceiver and Transceiver Management Interfaces 3.20. Testing Features
3.2. CPRI Intel® FPGA IP Core Clocking Structure x
3.2.1. Example CPRI Intel® FPGA IP Core Clock Connections in Different Clocking Modes
3.4. Start-Up Sequence Following Reset x
3.4.1. Start-Up Sequence Interface Signals
3.5. AUX Interface x
3.5.1. AUX Interface Signals 3.5.2. AUX Interface Synchronization 3.5.3. Auxiliary Latency Cycles 3.5.4. Direct Interface CPRI Frame Data Format
3.15. CPU Interface to CPRI Intel® FPGA IP Registers x
3.15.1. CPU Interface Signals 3.15.2. Accessing the Hyperframe Control Words
3.15.2. Accessing the Hyperframe Control Words x
3.15.2.1. Specifying the Control Word 3.15.2.2. Specifying the Position in the Control Word 3.15.2.3. Retrieving the Hyperframe Control Words 3.15.2.4. Writing the Hyperframe Control Words
3.17. Extended Delay Measurement x
3.17.1. Extended Delay Measurement for Soft Internal Buffers 3.17.2. Extended Delay Measurement for Intel® Stratix® 10 Hard FIFOs 3.17.3. Extended Delay Measurement Interface
3.18. Deterministic Latency and Delay Measurement and Calibration x
3.18.1. Delay Measurement and Calibration Features 3.18.2. Delay Requirements 3.18.3. Single-Hop Delay Measurement 3.18.4. Multi-Hop Delay Measurement 3.18.5. Delay Calibration Features
3.18.3. Single-Hop Delay Measurement x
3.18.3.1. Rx Path Delay 3.18.3.2. Tx Path Delay 3.18.3.3. Round-Trip Delay
3.18.5. Delay Calibration Features x
3.18.5.1. Single-Trip Delay Calibration 3.18.5.2. Round-Trip Delay Calibration 3.18.5.3. Tx Bitslip Delay
3.18.5.1. Single-Trip Delay Calibration x
3.18.5.1.1. Single-Trip Latency Measurement and Calibration Interface Signals
3.19. CPRI Intel® FPGA IP Transceiver and Transceiver Management Interfaces x
3.19.1. CPRI Link 3.19.2. Main Transceiver Clock and Reset Signals 3.19.3. Arria V, Arria V GZ, Cyclone V, and Stratix V Transceiver Reconfiguration Interface 3.19.4. Intel® Arria® 10, Intel® Stratix® 10, and Intel® Agilex™ Transceiver Reconfiguration Interface 3.19.5. RS-FEC Interface 3.19.6. Interface to the External Reset Controller 3.19.7. Interface to the External PLL 3.19.8. Transceiver Debug Interface
3.20. Testing Features x
3.20.1. CPRI Intel® FPGA IP Core Loopback Modes 3.20.2. CPRI Intel® FPGA IP Core Self-Synchronization Feature
4. CPRI Intel® FPGA IP Core Signals x
4.1. CPRI Intel® FPGA IP Core L2 Interface 4.2. CPRI Intel® FPGA IP Core L1 Direct Access Interfaces 4.3. CPRI Intel® FPGA IP Core Management Interfaces 4.4. CPRI Intel® FPGA IP Core Transceiver and Transceiver Management Signals
5. CPRI Intel® FPGA IP Core Registers x
5.1. INTR Register 5.2. L1_STATUS Register 5.3. L1_CONFIG Register 5.4. BIT_RATE_CONFIG Register 5.5. PROT_VER Register 5.6. TX_SCR Register 5.7. RX_SCR Register 5.8. CM_CONFIG Register 5.9. CM_STATUS Register 5.10. START_UP_SEQ Register 5.11. START_UP_TIMER Register 5.12. FLSAR Register 5.13. CTRL_INDEX Register 5.14. TX_CTRL Register 5.15. RX_CTRL Register 5.16. RX_ERR Register 5.17. RX_BFN Register 5.18. LOOPBACK Register 5.19. TX_DELAY Register 5.20. RX_DELAY Register 5.21. TX_EX_DELAY Register 5.22. RX_EX_DELAY Register 5.23. ROUND_TRIP_DELAY Register 5.24. XCVR_BITSLIP Register 5.25. DELAY_CAL_STD_CTRL1 Register 5.26. DELAY_CAL_STD_CTRL2 Register 5.27. DELAY_CAL_STD_CTRL3 Register 5.28. DELAY_CAL_STD_CTRL4 Register 5.29. DELAY_CAL_STD_CTRL5 Register 5.30. DELAY_CAL_STD_STATUS Register 5.31. DELAY_CAL_RTD Register 5.32. XCVR_TX_FIFO_DELAY Register 5.33. XCVR_RX_FIFO_DELAY Register 5.34. IP_INFO Register 5.35. DEBUG_STATUS Register
A. Additional Information x
A.1. CPRI Intel® FPGA IP User Guide Archives A.2. Document Revision History for the CPRI Intel® FPGA IP User Guide
1. About the CPRI Intel® FPGA IP Core
2. Getting Started with the CPRI Intel® FPGA IP Core
3. Functional Description
4. CPRI Intel® FPGA IP Core Signals
5. CPRI Intel® FPGA IP Core Registers
A. Additional Information

5. CPRI Intel® FPGA IP Core Registers

The CPRI IP core internal registers are accessible using the CPU interface, an Avalon-MM interface which conforms to the Avalon Interface Specifications.

All of these registers are 32 bits wide and the addresses are shown as hexadecimal byte address values. The registers can be accessed on a 32-bit (4-byte) basis. The addressing for the registers therefore increments by units of 4.

Write access to a Reserved or undefined location has no effect. Read accesses to a Reserved or undefined location return an undefined result.

Refer to the device specific PHY User Guides for information about the PHY registers.

Table 53.  Register Access CodesLists the access codes used to describe the type of register bits.
Code Description
RW Read / write
RO Read only
RC Read to clear
UR0 Reserved —undefined result on read, no effect on write
Table 54.  Control and Status Register Map
Offset Register Name Function Location of Additional Information
0x00 INTR Interrupt Control and Status INTR Register
0x04 L1_STATUS Layer 1 Status L1_STATUS Register
0x08 L1_CONFIG Layer 1 Configuration L1_CONFIG Register
0x0C BIT_RATE_CONFIG Bit Rate Configuration BIT_RATE_CONFIG Register
0x10 PROT_VER Protocol Version Control and Status PROT_VER Register
0x14 TX_SCR Transmitter Scrambler Control TX_SCR Register
0x18 RX_SCR Receiver Scrambler Status RX_SCR Register
0x1C CM_CONFIG Layer 2 Control and Management Configuration CM_CONFIG Register
0x20 CM_STATUS Layer 2 Control and Management Status CM_STATUS Register
0x24 START_UP_SEQ Start-Up Sequence Control and Status START_UP_SEQ Register
0x28 START_UP_TIMER Start-Up Sequence Timer Control START_UP_TIMER Register
0x2C FLSAR L1 Inband Z.130.0 Control and Status FLSAR Register
0x30 CTRL_INDEX Control Word Index CTRL_INDEX Register
0x34 TX_CTRL Transmit Control Word TX_CTRL Register
0x38 RX_CTRL Receive Control Word RX_CTRL Register
0x3C RX_ERR Receiver Error Status RX_ERR Register
0x40 RX_BFN Recovered Radio Frame Counter RX_BFN Register
0x44 LOOPBACK Loopback Control LOOPBACK Register
0x48 TX_DELAY Transmit Buffer Delay Control and Status TX_DELAY Register
0x4C RX_DELAY Receiver Buffer Delay Control and Status RX_DELAY Register
0x50 TX_EX_DELAY Transmit Buffer Extended Delay Measurement Control and Status TX_EX_DELAY Register
0x54 RX_EX_DELAY Receiver Buffer Extended Delay Measurement Status RX_EX_DELAY Register
0x58 ROUND_TRIP_DELAY Round Trip Delay ROUND_TRIP_DELAY Register
0x5C XCVR_BITSLIP Transceiver Bit Slip Control and Status XCVR_BITSLIP Register
0x60 DELAY_CAL_STD_CTRL1 Single-Trip Delay Calibration Control 1 DELAY_CAL_STD_CTRL1 Register
0x64 DELAY_CAL_STD_CTRL2 Single-Trip Delay Calibration Control 2 DELAY_CAL_STD_CTRL2 Register
0x68 DELAY_CAL_STD_CTRL3 Single-Trip Delay Calibration Control 3 DELAY_CAL_STD_CTRL3 Register
0x6C DELAY_CAL_STD_CTRL4 Single-Trip Delay Calibration Control 4 DELAY_CAL_STD_CTRL4 Register
0x70 DELAY_CAL_STD_CTRL5 Single-Trip Delay Calibration Control 5 DELAY_CAL_STD_CTRL5 Register
0x74 DELAY_CAL_STD_STATUS Single-Trip Delay Calibration Status DELAY_CAL_STD_STATUS Register
0x78 Reserved
0x7C Reserved
0x80 DELAY_CAL_RTD Round Trip Delay Calibration Control and Status DELAY_CAL_RTD Register
0x84 XCVR_TX_FIFO_DELAY Intel® Stratix® 10 H/L-Tile Transmitter FIFO Delay XCVR_TX_FIFO_DELAY Register
0x88 XCVR_RX_FIFO_DELAY Intel® Stratix® 10 H/L-Tile Receiver FIFO Delay XCVR_RX_FIFO_DELAY Register
0x8C IP_INFO IP Information IP_INFO Register
0xA0 DEBUG_STATUS Debug Related Status DEBUG_STATUS Register
Related Information
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