SerialLite II IP Core User Guide

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ID 683179
Date 7/13/2021
Public
Document Table of Contents
Document Table of Contents x
1. SerialLite II IP Core Overview 2. SerialLite II IP Core Getting Started 3. SerialLite II IP Core Functional Description 4. SerialLite II IP Core Testbench 5. SerialLite II IP Core User Guide Archives 6. Document Revision History for the SerialLite II IP Core User Guide
1. SerialLite II IP Core Overview x
1.1. General Description 1.2. Performance and Resource Utilization
2. SerialLite II IP Core Getting Started x
2.1. Parameterize the IP Core 2.2. Set Up Simulation 2.3. Generate Files 2.4. Simulate the Design 2.5. Instantiate the IP Core 2.6. Compile and Program Specify Constraints 2.8. SerialLite II Parameter Settings
2.8. SerialLite II Parameter Settings x
2.8.1. Link Consistency 2.8.2. Data Rate 2.8.3. Reference Clock Frequency 2.8.4. Port Type 2.8.5. Self Synchronized Link Up 2.8.6. Scramble 2.8.7. Broadcast Mode 2.8.8. Lane Polarity and Order Reversal 2.8.9. Data Type 2.8.10. Packet Type 2.8.11. Flow Control Operation 2.8.12. Transmit/Receive FIFO Buffers 2.8.13. Data Integrity Protection: CRC 2.8.14. Transceiver Configuration 2.8.15. Error Handling 2.8.16. Optimizing the Implementation
2.8.10. Packet Type x
2.8.10.1. Retry-on-Error
2.8.11. Flow Control Operation x
2.8.11.1. Selecting the Proper Threshold Value 2.8.11.2. Selecting the Proper Pause Duration 2.8.11.3. Selecting the Proper Refresh Value 2.8.11.4. External Flow Control (When RX FIFO Size is 0)
2.8.14. Transceiver Configuration x
2.8.14.1. Voltage Output Differential (VOD) Control Settings 2.8.14.2. Pre-Emphasis Control Settings 2.8.14.3. Transmitter Buffer Power (VCCH) 2.8.14.4. Transceiver Reconfiguration Block 2.8.14.5. ALTGX Support Signals
2.8.16. Optimizing the Implementation x
2.8.16.1. Improving Performance 2.8.16.2. Minimizing Logic Utilization 2.8.16.3. Minimizing Memory Utilization
3. SerialLite II IP Core Functional Description x
3.1. Atlantic Interface 3.2. High-Speed Serial Interface 3.3. Clocks and Data Rates 3.4. Multiple Core Configuration 3.5. IP Core Configuration for Intel® Arria® 10, Arria® V, Cyclone® V, and Stratix® V Devices 3.6. SerialLite II Signals 3.7. IP Core Verification
3.3. Clocks and Data Rates x
3.3.1. Aggregate Bandwidth 3.3.2. External Clock Modes 3.3.3. Internal Clocking Configurations 3.3.4. SerialLite II Deskew Support 3.3.5. SerialLite II Clocking Structure 3.3.6. SerialLite II Pin-Out Diagrams 3.3.7. Initialization and Restart
3.5. IP Core Configuration for Intel® Arria® 10, Arria® V, Cyclone® V, and Stratix® V Devices x
3.5.1. Design Consideration 3.5.2. Parameter Settings For SerialLite II and Custom PHY IP Cores 3.5.3. Extra Signals Between SerialLite II and Custom PHY IP Cores
4. SerialLite II IP Core Testbench x
4.1. Testbench Files 4.2. Testbench Specifications 4.3. Simulation Flow 4.4. Testbench Components
4.3. Simulation Flow x
4.3.1. Running a Simulation 4.3.2. Simulation Pass and Fail Conditions
4.3.2. Simulation Pass and Fail Conditions x
4.3.2.1. Value Change Dump (VCD) File Generation (For the Verilog HDL Testbench) 4.3.2.2. Testbench Time-Out 4.3.2.3. Special Simulation Configuration Settings 4.3.2.4. Atlantic Receiver Behavior
4.4. Testbench Components x
AGEN AMON 4.4.3. Status Monitors 4.4.4. Clock and Reset Generator 4.4.5. Custom PHY IP Core 4.4.6. Example Testbench – Verilog HDL
1. SerialLite II IP Core Overview
2. SerialLite II IP Core Getting Started
3. SerialLite II IP Core Functional Description
4. SerialLite II IP Core Testbench
5. SerialLite II IP Core User Guide Archives
6. Document Revision History for the SerialLite II IP Core User Guide

2.8.11.3. Selecting the Proper Refresh Value

The flow control refresh period determines the number of columns before a flow control packet can be retransmitted.

The stat_tc_rdp_thresh_breach, stat_tc_hpp_thresh_breach, stat_fc_hpp_retransmit, and stat_tc_fc_hpp_retransmit status signals indicate whether the refresh period is set appropriately. If stat_tc_rdp_thresh_breach or stat_tc_hpp_thresh_breach (which indicates that the RX FIFO is still breached) is still asserted after the FC refresh period (based on the value set), the far transmitter generates another flow control packet (based on the value set at the Pause Quantum Time option) and sends it out, causing the stat_fc_hpp_retransmit or stat_tc_fc_hpp_retransmit to be asserted.

Level Two Title