GTS SDI II IP User Guide

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ID 823539
Date 6/30/2025
Public
Document Table of Contents
Document Table of Contents x
1. GTS SDI II IP Quick Reference 2. GTS SDI II IP Core Overview 3. GTS SDI II IP Core Getting Started 4. GTS SDI II IP Parameters 5. GTS SDI II IP Core Functional Description 6. GTS SDI II IP Core Signals 7. GTS SDI II IP Core Design Considerations 8. GTS SDI II IP Core Testbench and Design Examples 9. Document Revision History for the GTS SDI II IP User Guide
2. GTS SDI II IP Core Overview x
2.1. Release Information 2.2. Device Family Support 2.3. General Description 2.4. Performance and Resource Utilization
3. GTS SDI II IP Core Getting Started x
3.1. Installing and Licensing IP Cores 3.2. Design Walkthrough 3.3. GTS SDI II IP Core Component Files 3.4. Compiling the GTS SDI II IP Core Design 3.5. Programming an FPGA
3.1. Installing and Licensing IP Cores x
3.1.1. Intel FPGA IP Evaluation Mode
3.2. Design Walkthrough x
3.2.1. Creating a New Quartus® Prime Project 3.2.2. Launching IP Catalog 3.2.3. Parameterizing the IP Core 3.2.4. Generating a Design Example and Simulation Testbench
5. GTS SDI II IP Core Functional Description x
5.1. Protocol 5.2. Transceiver 5.3. Submodules 5.4. Optional Features
5.1. Protocol x
5.1.1. Transmitter 5.1.2. Receiver
5.3. Submodules x
5.3.1. Insert Line 5.3.2. Insert/Check CRC 5.3.3. Insert Payload ID 5.3.4. Match TRS 5.3.5. Scrambler 5.3.6. TX Sample 5.3.7. Clock Enable Generator 5.3.8. RX Sample 5.3.9. Detect Video Standard 5.3.10. Detect 1 and 1/1.001 Rates 5.3.11. Transceiver Controller 5.3.12. Descrambler 5.3.13. TRS Aligner 5.3.14. 3Gb Demux 5.3.15. Extract Line 5.3.16. Extract Payload ID 5.3.17. Detect Format 5.3.18. Sync Streams 5.3.19. Convert SD Bits 5.3.20. Insert Sync Bits 5.3.21. Remove Sync Bits
5.4. Optional Features x
5.4.1. SMPTE RP168 Switching Support 5.4.2. SD 20-Bit Interface for Dual/Triple Rate 5.4.3. Intel FPGA Video Streaming Interface
5.4.3. Intel FPGA Video Streaming Interface x
5.4.3.1. RGB Pixel Packing 5.4.3.2. YCbCr 444 Pixel Packing 5.4.3.3. YCbCr 422 Pixel Packing 5.4.3.4. Supported Modes
6. GTS SDI II IP Core Signals x
6.1. GTS SDI II IP Core Resets and Clocks 6.2. Transmitter Protocol Signals 6.3. Receiver Protocol Signals 6.4. Transceiver Signals 6.5. Transmitter Streaming Video and Control Signals 6.6. Receiver Streaming Video and Control Signals
6.2. Transmitter Protocol Signals x
6.2.1. Image Mapping
6.3. Receiver Protocol Signals x
6.3.1. rx_format
7. GTS SDI II IP Core Design Considerations x
7.1. Transceiver Handling Guidelines 7.2. Dual Simplex Merging Tool (DS tool)
7.1. Transceiver Handling Guidelines x
7.1.1. Handling Transceiver in Agilex™ 5 Devices
7.1.1. Handling Transceiver in Agilex™ 5 Devices x
7.1.1.1. System PLL Clocking Mode 7.1.1.2. Unused Transceiver Tiles 7.1.1.3. SmartVID Settings
7.2. Dual Simplex Merging Tool (DS tool) x
7.2.1. Using the DS Tool
8. GTS SDI II IP Core Testbench and Design Examples x
8.1. Design Examples for Agilex™ 5 Devices
1. GTS SDI II IP Quick Reference
2. GTS SDI II IP Core Overview
3. GTS SDI II IP Core Getting Started
4. GTS SDI II IP Parameters
5. GTS SDI II IP Core Functional Description
6. GTS SDI II IP Core Signals
7. GTS SDI II IP Core Design Considerations
8. GTS SDI II IP Core Testbench and Design Examples
9. Document Revision History for the GTS SDI II IP User Guide

5.3.5. Scrambler

The SMPTE ST 259 and SMPTE ST 292 specifications define a common channel coding for both SD-SDI and HD-SDI. This channel coding consists of a scrambling function (G1(X) = X9 + X4 + 1), followed by NRZI encoding (G2(X) = X + 1).

The scrambling submodule implements the channel coding by iteratively applying the scrambling and NRZI encoding algorithm to each bit of the output data, processing the LSB first. The code handles all transmit data: SD (10 bits wide), HD/3G (20 bits wide), 6G (40 bits wide), and 12G (80 bits wide).

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