F-tile Architecture and PMA and FEC Direct PHY IP User Guide

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ID 683872
Date 12/15/2021
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Document Table of Contents
Document Table of Contents
1. F-tile Overview 2. F-tile Architecture 3. Implementing the F-Tile PMA/FEC Direct PHY Intel® FPGA IP 4. Implementing the F-Tile Reference and System PLL Clocks Intel® FPGA IP 5. Implementing the F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP 6. F-tile PMA/FEC Direct PHY Design Implementation 7. Supported Tools 8. Debugging F-Tile Transceiver Links 9. F-tile Architecture and PMA and FEC Direct PHY IP User Guide Archives 10. Document Revision History for F-tile Architecture and PMA and FEC Direct PHY IP User Guide
2. F-tile Architecture
2.1. F-Tile Building Blocks 2.2. F-Tile Placement Rules 2.3. PMA Architecture 2.4. Clock Architecture
2.1. F-Tile Building Blocks
2.1.1. FHT and FGT PMAs 2.1.2. 400G Hard IP and 200G Hard IP 2.1.3. PMA Data Rates 2.1.4. FEC Architecture 2.1.5. PCIe* Hard IP 2.1.6. Bonding Architecture 2.1.7. Deskew Logic 2.1.8. Embedded Multi-die Interconnect Bridge (EMIB) 2.1.9. IEEE 1588 Precision Time Protocol for Ethernet 2.1.10. Clock Networks 2.1.11. Reconfiguration Interfaces
2.2. F-Tile Placement Rules
2.2.1. PMA-to-Fracture Mapping 2.2.2. Determining Which PMA to Map to Which Fracture 2.2.3. Hard IP Placement Rules 2.2.4. IEEE 1588 Precision Time Protocol Placement Rules 2.2.5. Topologies 2.2.6. FEC Placement Rules 2.2.7. Clock Rules and Restrictions 2.2.8. Bonding Placement Rules 2.2.9. Preserving Unused PMA Lanes
2.2.1. PMA-to-Fracture Mapping
2.2.1.1. FHT-PMA-to-400G-Hard-IP-Fracture Mapping 2.2.1.2. FGT-PMA-to-400G-Hard-IP-Fracture Mapping 2.2.1.3. FGT-PMA-to-200G-Hard-IP-Fracture Mapping
2.2.2. Determining Which PMA to Map to Which Fracture
2.2.2.1. Implementing One 200GbE-4 Interface with 400G Hard IP and FHT 2.2.2.2. Implementing One 200GbE-2 Interface with 400G Hard IP and FHT 2.2.2.3. Implementing One 100GbE-1 Interface with 400G Hard IP and FHT 2.2.2.4. Implementing One 100GbE-4 Interface with 400G Hard IP and FGT 2.2.2.5. Implementing One 10GbE-1 Interface with 200G Hard IP and FGT 2.2.2.6. Implementing Three 25GbE-1 Interfaces with 400G Hard IP and FHT 2.2.2.7. Implementing One 50GbE-1 and Two 25GbE-1 Interfaces with 400G Hard IP and FHT 2.2.2.8. Implementing One 100GbE-1 and Two 25GbE-1 Interfaces with 400G Hard IP and FHT 2.2.2.9. Implementing Two 100GbE-1 and One 25GbE-1 Interfaces with 400G Hard IP and FHT 2.2.2.10. Implementing 100GbE-1, 100GbE-2, and 50GbE-1 Interfaces with 400G Hard IP and FHT
2.2.5. Topologies
2.2.5.1. Topology 5: 400G Hard IP (FHT) + 200G Hard IP (FGT) Example 2.2.5.2. Topology 14: 1x PCIe x4 + 400G Hard IP (FGT) with PTP Example
2.2.8. Bonding Placement Rules
2.2.8.1. Bonded Lanes Use Case 1 2.2.8.2. Bonded Lanes Use Case 2
2.3. PMA Architecture
2.3.1. FHT PMA Architecture 2.3.2. FGT PMA Architecture
2.3.1. FHT PMA Architecture
2.3.1.1. FHT Transmitter PMA Architecture 2.3.1.2. FHT Receiver PMA Architecture 2.3.1.3. FHT PMA Loopback Modes
2.3.1.1. FHT Transmitter PMA Architecture
2.3.1.1.1. FHT Transmitter Buffer and Phase Generator 2.3.1.1.2. FHT Serializer 2.3.1.1.3. FHT Gray-Coder and Pre-Coder 2.3.1.1.4. FHT Data Pattern Generator and Verifier
2.3.1.2. FHT Receiver PMA Architecture
2.3.1.2.1. FHT Receiver Buffer and Equalizer 2.3.1.2.2. CDR Block 2.3.1.2.3. FHT Deserializer
2.3.2. FGT PMA Architecture
2.3.2.1. FGT Transmitter PMA Architecture 2.3.2.2. FGT Receiver PMA Architecture 2.3.2.3. FGT PMA Tuning 2.3.2.4. FGT PMA Loopback Modes
2.3.2.1. FGT Transmitter PMA Architecture
2.3.2.1.1. FGT Transmitter Buffer and Phase Generator 2.3.2.1.2. FGT Serializer 2.3.2.1.3. FGT Gray-Coder and Pre-Coder 2.3.2.1.4. FGT Data Pattern Generator and Verifier
2.3.2.2. FGT Receiver PMA Architecture
2.3.2.2.1. FGT Receiver Buffer and Equalizer 2.3.2.2.2. Control Unit 2.3.2.2.3. FGT Deserializer
2.4. Clock Architecture
2.4.1. Reference Clock Network 2.4.2. Datapath Clock Network 2.4.3. System PLL 2.4.4. Datapath Clock Cadences
2.4.1. Reference Clock Network
2.4.1.1. FHT Reference Clock Network 2.4.1.2. FGT and System PLL Reference Clock Network 2.4.1.3. FGT Primary PLL Configuration
3. Implementing the F-Tile PMA/FEC Direct PHY Intel® FPGA IP
3.1. F-Tile PMA/FEC Direct PHY Intel® FPGA IP Overview 3.2. Designing with F-Tile PMA/FEC Direct PHY Intel® FPGA IP 3.3. Configuring the IP 3.4. Signal and Port Reference 3.5. Bit Mapping for PMA and FEC Mode PHY TX and RX Datapath 3.6. Clocking 3.7. Custom Cadence Generation Ports and Logic 3.8. Asserting Reset 3.9. Bonding Implementation 3.10. Independent Port Configurations 3.11. Configuration Registers 3.12. Configurable Intel® Quartus® Prime Software Settings 3.13. Configuring the F-Tile PMA/FEC Direct PHY Intel® FPGA IP for Hardware Testing 3.14. Hardware Configuration Using the Avalon® Memory-Mapped Interface
3.1. F-Tile PMA/FEC Direct PHY Intel® FPGA IP Overview
3.1.1. PMA Direct Supported Modes 3.1.2. FEC Direct Supported Modes 3.1.3. Unsupported PMA/FEC Modes
3.2. Designing with F-Tile PMA/FEC Direct PHY Intel® FPGA IP
3.2.1. Preset IP Parameter Settings
3.3. Configuring the IP
3.3.1. General and Common Datapath Options 3.3.2. TX Datapath Options 3.3.3. RX Datapath Options 3.3.4. RS-FEC (Reed Solomon Forward Error Correction) Options 3.3.5. Avalon® Memory Mapped Interface Options 3.3.6. Example Design Generation
3.3.2. TX Datapath Options
3.3.2.1. TX PMA interface Parameters
3.3.3. RX Datapath Options
3.3.3.1. RX FGT PMA Interface Options
3.4. Signal and Port Reference
3.4.1. TX and RX Parallel and Serial Interface Signals 3.4.2. TX and RX Reference Clock and Clock Output Interface Signals 3.4.3. Reset Signals 3.4.4. RS-FEC Signals 3.4.5. Custom Cadence Control and Status Signals 3.4.6. TX PMA Status Signals 3.4.7. RX PMA Status Signals 3.4.8. TX and RX PMA and Core Interface FIFO Signals 3.4.9. PMA Avalon® Memory Mapped Interface Signals 3.4.10. Datapath Avalon® Memory Mapped Interface Signals
3.4.10. Datapath Avalon® Memory Mapped Interface Signals
3.4.10.1. Number of Datapath Memory Mapped Avalon® Interfaces and Additional Address Bits per Interface
3.5. Bit Mapping for PMA and FEC Mode PHY TX and RX Datapath
3.5.1. Parallel Data Mapping Information 3.5.2. TX and RX Parallel Data Mapping Information for Different Configurations 3.5.3. Example of TX Parallel Data for PMA Width = 8, 10, 16, 20, 32 (X=1) 3.5.4. Example of TX Parallel Data for PMA width = 64 (X=2) 3.5.5. Example of TX Parallel Data for PMA width = 64 (X=2) for FEC Direct Mode
3.6. Clocking
3.6.1. Clock Ports 3.6.2. Recommended tx/rx_coreclkin Connection and tx/rx_clkout2 Source 3.6.3. Port Widths and Recommended Connections for tx/rx_coreclkin, tx/rx_clkout, and tx/rx_clkout2 3.6.4. FGT PMA Fractional Mode 3.6.5. FGT Core PLL Mode
3.7. Custom Cadence Generation Ports and Logic
3.7.1. Enabling the tx_cadence_slow_clk_locked Port 3.7.2. Rate Match FIFO
3.8. Asserting Reset
3.8.1. Reset Signal Requirements 3.8.2. Power On Reset Requirements 3.8.3. Reset Signals—Block Level 3.8.4. Reset Signals—Descriptions 3.8.5. Status Signals—Descriptions 3.8.6. Run-time Reset Sequence—TX 3.8.7. Run-time Reset Sequence—RX 3.8.8. Run-time Reset Sequence—TX + RX 3.8.9. Run-time Reset Sequence—TX with FEC
3.8.8. Run-time Reset Sequence—TX + RX
3.8.8.1. Run-time Reset Sequence Approximate Time Durations
3.11. Configuration Registers
3.11.1. PMA and FEC Direct PHY Soft CSR Register Map 3.11.2. FHT PMA Register Map 3.11.3. FGT PMA Register Map 3.11.4. FEC Register Map 3.11.5. Lane Offset Address 3.11.6. Logical Avalon® Memory-Mapped Port Indexing
3.11.6. Logical Avalon® Memory-Mapped Port Indexing
3.11.6.1. FGT PMA Lane Addressing Example 1 3.11.6.2. FGT PMA Lane Addressing Example 2
3.13. Configuring the F-Tile PMA/FEC Direct PHY Intel® FPGA IP for Hardware Testing
3.13.1. Using Debug Endpoint Interface within the F-Tile PMA/FEC Direct PHY Intel® FPGA IP 3.13.2. Using JTAG to Avalon® Master Bridge Intel FPGA IP
3.13.1. Using Debug Endpoint Interface within the F-Tile PMA/FEC Direct PHY Intel® FPGA IP
3.13.1.1. RTL Connection Example for Debug Endpoint Avalon® Interface
3.13.2. Using JTAG to Avalon® Master Bridge Intel FPGA IP
3.13.2.1. RTL Connection Example for JTAG to Avalon® Master Bridge Intel IP
3.14. Hardware Configuration Using the Avalon® Memory-Mapped Interface
3.14.1. FHT PMA 3.14.2. FGT PMA
3.14.1. FHT PMA
3.14.1.1. Enabling Loopback 3.14.1.2. Enabling the PRBS Generator and Verifier 3.14.1.3. TX Equalizer Settings 3.14.1.4. TX Error Injection 3.14.1.5. RX Reconvergence 3.14.1.6. Preserving Unused Lanes
3.14.2. FGT PMA
3.14.2.1. Direct Register Method 3.14.2.2. FGT Attribute Access Method
3.14.2.1. Direct Register Method
3.14.2.1.1. Direct Register Method Example
3.14.2.2. FGT Attribute Access Method
3.14.2.2.1. FGT Attribute Access Method Example
4. Implementing the F-Tile Reference and System PLL Clocks Intel® FPGA IP
4.1. IP Parameters 4.2. IP Port List 4.3. Mode of System PLL - System PLL Reference Clock and Output Frequencies 4.4. Guidelines for F-Tile Reference and System PLL Clocks Intel® FPGA IP Usage
5. Implementing the F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP
5.1. IP Parameters 5.2. IP Port List 5.3. Hardware Flow Using the F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP
6. F-tile PMA/FEC Direct PHY Design Implementation
6.1. Implementing the F-tile PMA/FEC Direct PHY Design 6.2. Instantiating the F-Tile PMA/FEC Direct PHY Intel® FPGA IP 6.3. Implementing a RS-FEC Direct Design in the F-Tile PMA/FEC Direct PHY Intel® FPGA IP 6.4. Instantiating the F-Tile Reference and System PLL Clocks Intel® FPGA IP 6.5. Enabling Custom Cadence Generation Ports and Logic 6.6. Connecting the F-tile PMA/FEC Direct PHY Design IP 6.7. Simulating the F-Tile PMA/FEC Direct PHY Design 6.8. F-tile Interface Planning
6.2. Instantiating the F-Tile PMA/FEC Direct PHY Intel® FPGA IP
6.2.1. Setting General and Common Datapath Options 6.2.2. Setting TX Datapath Options 6.2.3. Setting RX Datapath Options
6.7. Simulating the F-Tile PMA/FEC Direct PHY Design
6.7.1. PAM4 Encoding Schemes in Simulation
6.8. F-tile Interface Planning
6.8.1. F-tile Interface Planner Usage Example
7. Supported Tools
7.1. F-Tile Channel Placement Tool 7.2. F-Tile PMA and FEC Direct Port Mapping Calculator 7.3. F-Tile Clocking and Datapath Tool 7.4. F-Tile TX Equalizer Tool
8. Debugging F-Tile Transceiver Links
8.1. F-Tile Transceiver Toolkit GUI 8.2. F-Tile Transceiver Debugging Flow Walkthrough 8.3. Transceiver Toolkit Parameter Settings 8.4. Troubleshooting Common Errors
8.1. F-Tile Transceiver Toolkit GUI
8.1.1. Collection View
8.2. F-Tile Transceiver Debugging Flow Walkthrough
8.2.1. Modifying the Design to Enable F-Tile Transceiver Debug 8.2.2. Programming the Design into an Intel FPGA 8.2.3. Loading the Design to the Transceiver Toolkit 8.2.4. Creating Transceiver Links 8.2.5. Running BER Tests 8.2.6. Running Eye Viewer Tests
1. F-tile Overview
2. F-tile Architecture
3. Implementing the F-Tile PMA/FEC Direct PHY Intel® FPGA IP
4. Implementing the F-Tile Reference and System PLL Clocks Intel® FPGA IP
5. Implementing the F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP
6. F-tile PMA/FEC Direct PHY Design Implementation
7. Supported Tools
8. Debugging F-Tile Transceiver Links
9. F-tile Architecture and PMA and FEC Direct PHY IP User Guide Archives
10. Document Revision History for F-tile Architecture and PMA and FEC Direct PHY IP User Guide

5.3. Hardware Flow Using the F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP

You can access the FHT and FGT PMA registers using the F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP.

Here are the steps you need to follow to add the F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP to work with a F-Tile PMA/FEC Direct PHY Intel® FPGA IP design.

  1. Add the F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP into your design and enable the read_data_valid port as shown in the following figures.
    Figure 86. F-Tile Global Avalon Memory-Mapped Interface Intel FPGA IP
    Figure 87.  F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP Settings
  2. Add the JTAG to Avalon® Master Bridge Intel FPGA IP into your design.
    Figure 88. JTAG to Avalon® Master Bridge Intel FPGA IP
  3. Declare wires to connect the g_avmm interface to the jtag_master ports as shown in the following figure.
    Note: The g_avmm_address port of g_avmm interface is 18 bits and the master_address port of jtag_master is 32 bits.
    Note: You need to enable the readdatavalid port in the JTAG to Avalon® Master Bridge Intel FPGA IP and connect it to the corresponding F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP port.
    Figure 89.  F-Tile Global Avalon® Memory-Mapped Interface Intel® FPGA IP to JTAG to Avalon® Master Bridge Intel FPGA IP RTL Connections
  4. In the F-Tile PMA/FEC Direct PHY Intel® FPGA IP, disable both the datapath Avalon® interface and the PMA Avalon® interface by unchecking the interfaces as shown in the following figure.
    Note: This step is optional. The datapath and PMA Avalon® interface in the F-Tile PMA/FEC Direct PHY Intel® FPGA IP and the Global Avalon® memory-mapped interface can function together.
    Figure 90. Disable Datapath and PMA Avalon® Interface in the F-Tile PMA/FEC Direct PHY Intel® FPGA IP
  5. Run the Support-Logic Generation for your design in the Intel® Quartus® Prime Pro Edition software and place the F-tile in your design by using the Tile Interface Planner tool as shown in the following figure. Refer to F-tile Interface Planning for more information.
    Figure 91. Using Tile Interface Planner to Obtain the F-Tile Co-ordinates
    Once you have the F-tile co-ordinates add the following assignment in your qsf settings file.

    set_instance_assignment -name IP_TILE_ASSIGNMENT <F-tile co-ordinates> -to gavmm_inst

    For example you must add the following assignment in your qsf settings file for the AGIB027R29A1E2VR0 device.

    set_instance_assignment -name IP_TILE_ASSIGNMENT Z1577A_X0_Y0_N0 -to gavmm_inst

    Note: The gavmm_inst qsf assignment name must be identical to the instance name in your design file or else you can get a placement failure in the design compilation.
  6. To perform hardware testing to access registers using the global Avalon® interface you need to do the following:
    • Write the page address of the block you want to access to the page address: 0xffffc. The following table shows the page address of the various blocks in the F-tile.
      Table 94.  Block and Page Address
      Block Page Address
      EMIB 0x00
      400G Hard IP 0x02
      400G 0x04
      200G Hard IP 0x06
      200G FEC/PMA Interface 0x08
      PCIe Hard IP 0x0A
      FGT PMA Quad 0 0x0C
      FGT PMA Quad 1 0x0D
      FGT PMA Quad 2 0x0E
      FGT PMA Quad 3 0x0F
      FHT PMA 0x10
    • You can then read and write values to the PMA offset register address to access the registers.

      As an example, here are steps to access the registers in a FGT PMA in quad 3 for a one channel 25G design.

      1. Read address 0xffffc; it should be 0x00000000.
      2. Write 0xf to address 0xffffc.
      3. Read address 0xffffc; it should be 0x0000000f.
      4. Now you can read the various offset address registers to access the register values. In this example, you can read address 0xf0010, 0x40740, and 0x62000 and get their register values.
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