Intel® Agilex™ F-Series and I-Series LVDS SERDES User Guide

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ID 721819
Date 11/30/2022
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Document Table of Contents
Document Table of Contents x
1. Intel® Agilex™ F-Series and I-Series LVDS SERDES Overview 2. Intel® Agilex™ F-Series and I-Series High-Speed SERDES Architecture 3. Intel® Agilex™ LVDS SERDES Transmitter 4. Intel® Agilex™ LVDS SERDES Receiver 5. Intel® Agilex™ High-Speed LVDS I/O Implementation Guide 6. Intel® Agilex™ LVDS SERDES Timing 7. LVDS SERDES Intel® FPGA IP Design Examples 8. Intel® Agilex™ F-Series and I-Series High-Speed SERDES Design Guidelines 9. Intel® Agilex™ F-Series and I-Series High-Speed SERDES Troubleshooting Guidelines 10. Documentation Related to the Intel® Agilex™ F-Series and I-Series LVDS SERDES User Guide 11. Document Revision History for the Intel® Agilex™ F-Series and I-Series LVDS SERDES User Guide
1. Intel® Agilex™ F-Series and I-Series LVDS SERDES Overview x
1.1. High-Speed SERDES Usage Modes
2. Intel® Agilex™ F-Series and I-Series High-Speed SERDES Architecture x
2.1. Intel® Agilex™ GPIO Banks, SERDES, and DPA Locations 2.2. SERDES Blocks, Modes, and Clock Domains
3. Intel® Agilex™ LVDS SERDES Transmitter x
3.1. LVDS SERDES Transmitter Blocks 3.2. Serializer 3.3. Differential I/O Bit Position 3.4. Clocking the Differential Transmitters
3.2. Serializer x
3.2.1. Serializer Bypass for DDR and SDR Operations
3.4. Clocking the Differential Transmitters x
3.4.1. Transmitter Output Clock Parameters Settings
3.4.1. Transmitter Output Clock Parameters Settings x
3.4.1.1. Edge-Aligned tx_outclock to tx_out 3.4.1.2. Center-Aligned tx_outclock to tx_out
4. Intel® Agilex™ LVDS SERDES Receiver x
4.1. LVDS SERDES Receiver Blocks 4.2. Clocking the LVDS SERDES Receivers 4.3. LVDS SERDES Receiver Modes
4.1. LVDS SERDES Receiver Blocks x
4.1.1. Dynamic Phase Alignment Block 4.1.2. Synchronizer (DPA FIFO) 4.1.3. Data Realignment Block (Bit Slip) 4.1.4. Deserializer
4.2. Clocking the LVDS SERDES Receivers x
4.2.1. Receiver Input Clock Parameters Settings
4.2.1. Receiver Input Clock Parameters Settings x
4.2.1.1. Edge-Aligned inclock to rx_in 4.2.1.2. Center-Aligned inclock to rx_in
4.3. LVDS SERDES Receiver Modes x
4.3.1. Non-DPA Mode 4.3.2. DPA Mode 4.3.3. Soft-CDR Mode
5. Intel® Agilex™ High-Speed LVDS I/O Implementation Guide x
5.1. LVDS SERDES Intel® FPGA IP 5.2. LVDS Interface with External PLL Mode 5.3. LVDS SERDES IP Initialization and Reset
5.1. LVDS SERDES Intel® FPGA IP x
5.1.1. Release Information 5.1.2. LVDS SERDES Intel® FPGA IP Features 5.1.3. LVDS SERDES IP Usage Modes 5.1.4. Generating the LVDS SERDES Intel® FPGA IP 5.1.5. LVDS SERDES Intel® FPGA IP Parameter Settings 5.1.6. LVDS SERDES Intel® FPGA IP Signals
5.1.4. Generating the LVDS SERDES Intel® FPGA IP x
5.1.4.1. Intel® FPGA IP Generation Output
5.1.5. LVDS SERDES Intel® FPGA IP Parameter Settings x
5.1.5.1. LVDS SERDES Intel® FPGA IP General Settings 5.1.5.2. LVDS SERDES Intel® FPGA IP PLL Settings 5.1.5.3. LVDS SERDES Intel® FPGA IP Receiver Settings 5.1.5.4. LVDS SERDES Intel® FPGA IP Transmitter Settings 5.1.5.5. LVDS SERDES Intel® FPGA IP Clock Resource Summary
5.2. LVDS Interface with External PLL Mode x
5.2.1. IOPLL IP Signal Interface with LVDS SERDES IP 5.2.2. IOPLL Parameter Values for External PLL Mode 5.2.3. Connection between IOPLL IP and LVDS SERDES IP in External PLL Mode
5.3. LVDS SERDES IP Initialization and Reset x
5.3.1. Initializing the LVDS SERDES IP in Non-DPA Mode 5.3.2. Initializing the LVDS SERDES IP in DPA Mode 5.3.3. Resetting the DPA 5.3.4. Word Boundaries Alignment
5.3.4. Word Boundaries Alignment x
5.3.4.1. Aligning Word Boundaries
6. Intel® Agilex™ LVDS SERDES Timing x
6.1. LVDS SERDES Intel® FPGA IP Timing 6.2. LVDS SERDES Source-Synchronous Timing Budget
6.1. LVDS SERDES Intel® FPGA IP Timing x
6.1.1. I/O Timing Analysis 6.1.2. FPGA Timing Analysis 6.1.3. Timing Analysis for the External PLL Mode
6.1.1. I/O Timing Analysis x
6.1.1.1. Obtaining RSKM Report 6.1.1.2. Obtaining TCCS Report
6.2. LVDS SERDES Source-Synchronous Timing Budget x
6.2.1. Transmitter Channel-to-Channel Skew 6.2.2. Receiver Skew Margin
7. LVDS SERDES Intel® FPGA IP Design Examples x
7.1. LVDS SERDES IP Synthesizable Intel® Quartus® Prime Design Examples 7.2. LVDS SERDES IP Simulation Design Example 7.3. Combined LVDS SERDES IP Transmitter and Receiver Design Example 7.4. LVDS SERDES IP Dynamic Phase Shift Design Example
8. Intel® Agilex™ F-Series and I-Series High-Speed SERDES Design Guidelines x
8.1. Use PLLs in Integer PLL Mode for LVDS 8.2. Use High-Speed Clock from PLL to Clock SERDES Only 8.3. Pin Placement for Differential Channels 8.4. SERDES Pin Pairs for Soft-CDR Mode 8.5. Placing LVDS Transmitters and Receivers in the Same GPIO Bank
1. Intel® Agilex™ F-Series and I-Series LVDS SERDES Overview
2. Intel® Agilex™ F-Series and I-Series High-Speed SERDES Architecture
3. Intel® Agilex™ LVDS SERDES Transmitter
4. Intel® Agilex™ LVDS SERDES Receiver
5. Intel® Agilex™ High-Speed LVDS I/O Implementation Guide
6. Intel® Agilex™ LVDS SERDES Timing
7. LVDS SERDES Intel® FPGA IP Design Examples
8. Intel® Agilex™ F-Series and I-Series High-Speed SERDES Design Guidelines
9. Intel® Agilex™ F-Series and I-Series High-Speed SERDES Troubleshooting Guidelines
10. Documentation Related to the Intel® Agilex™ F-Series and I-Series LVDS SERDES User Guide
11. Document Revision History for the Intel® Agilex™ F-Series and I-Series LVDS SERDES User Guide

4.1.2. Synchronizer (DPA FIFO)

The synchronizer is a 1-bit wide and 6-bit deep FIFO buffer that compensates for the phase difference between dpa_fast_clock from the DPA block and the fast_clock that the I/O PLLs produce.

The synchronizer can compensate only for phase differences, not frequency differences, between the data and the input reference clock of the receiver.

The optional rx_fifo_reset signal resets the synchronizer. The synchronizer resets automatically when the DPA block first locks to the incoming data. If your data checker indicates corrupt received data, use rx_fifo_reset to reset the synchronizer.

Note: The receiver bypasses the synchronizer circuit in non-DPA and soft-CDR modes.
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