HDMI Intel® FPGA IP User Guide

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ID 683798
Date 11/12/2021
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Document Table of Contents
Document Table of Contents x
1. HDMI Intel® FPGA IP Quick Reference 2. HDMI Overview 3. HDMI Intel® FPGA IP Getting Started 4. HDMI Hardware Design Examples 5. HDMI Source 6. HDMI Sink 7. HDMI Parameters 8. HDMI Simulation Example 9. HDMI Intel® FPGA IP User Guide Archives 10. Document Revision History for the HDMI Intel® FPGA IP User Guide
2. HDMI Overview x
2.1. Release Information 2.2. Device Family Support 2.3. Feature Support 2.4. Resource Utilization
3. HDMI Intel® FPGA IP Getting Started x
3.1. Installing and Licensing Intel® FPGA IP Cores 3.2. Specifying IP Parameters and Options
3.1. Installing and Licensing Intel® FPGA IP Cores x
3.1.1. Intel® FPGA IP Evaluation Mode
4. HDMI Hardware Design Examples x
4.1. HDMI Hardware Design Examples for Intel Arria 10, Intel Cyclone 10 GX, and Intel Stratix 10 Devices 4.2. HDCP Over HDMI Design Example for Intel® Arria® 10 and Intel® Stratix® 10 Devices 4.3. HDMI Hardware Design Examples for Arria V and Stratix V Devices
4.3. HDMI Hardware Design Examples for Arria V and Stratix V Devices x
4.3.1. HDMI Hardware Design Components 4.3.2. HDMI Hardware Design Requirements 4.3.3. Design Walkthrough
4.3.1. HDMI Hardware Design Components x
4.3.1.1. Transceiver Native PHY (RX) 4.3.1.2. PLL Intel FPGA IP Cores 4.3.1.3. PLL Reconfig Intel FPGA IP Core 4.3.1.4. Multirate Reconfig Controller (RX) 4.3.1.5. Oversampler (RX) 4.3.1.6. DCFIFO 4.3.1.7. Sink Display Data Channel (DDC) & Status and Control Data Channel (SCDC) 4.3.1.8. Transceiver Reconfiguration Controller 4.3.1.9. VIP Bypass and Audio, Auxiliary and InfoFrame Buffers 4.3.1.10. Transceiver Native PHY (TX) 4.3.1.11. Transceiver PHY Reset Controller 4.3.1.12. Oversampler (TX) 4.3.1.13. Clock Enable Generator 4.3.1.14. Platform Designer System
4.3.1.14. Platform Designer System x
4.3.1.14.1. VIP Passthrough for HDMI Video Stream 4.3.1.14.2. Source SCDC Controller 4.3.1.14.3. Source Reconfiguration Controller
4.3.3. Design Walkthrough x
4.3.3.1. Set Up the Hardware 4.3.3.2. Copy the Design Files 4.3.3.3. Build and Compile the Design 4.3.3.4. View the Results
4.3.3.4. View the Results x
4.3.3.4.1. Push Buttons, DIP Switches and LED Functions
5. HDMI Source x
5.1. Source Functional Description 5.2. Source Interfaces 5.3. Source Clock Tree 5.4. Link Training Procedure 5.5. FRL Clocking Scheme 5.6. Valid Video Data 5.7. Source Deep Color Implementation When Support FRL = 0 5.8. Source Deep Color Implementation When Support FRL = 1 5.9. Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM)
5.1. Source Functional Description x
5.1.1. Source Scrambler, TMDS/TERC4 Encoder 5.1.2. Source Video Resampler 5.1.3. Source Window of Opportunity Generator 5.1.4. Source Auxiliary Packet Encoder 5.1.5. Source Auxiliary Packet Generators 5.1.6. Source Auxiliary Data Path Multiplexers 5.1.7. Source Auxiliary Control Port 5.1.8. Source Audio Encoder 5.1.9. HDCP 1.4 TX Architecture 5.1.10. HDCP 2.3 TX Architecture 5.1.11. FRL Packetizer 5.1.12. FRL Character Block and Super Block Mapping 5.1.13. Reed-Solomon (RS) Forward Error Correction (FEC) Generation and Insertion 5.1.14. FRL Scrambler and Encoder 5.1.15. Source FRL Resampler 5.1.16. TX Oversampler 5.1.17. Clock Enable Generator 5.1.18. I2C Master
5.1.7. Source Auxiliary Control Port x
5.1.7.1. Source General Control Packet (GCP) 5.1.7.2. Source Auxiliary Video Information (AVI) InfoFrame Bit-Fields 5.1.7.3. Source HDMI Vendor Specific InfoFrame (VSI)
5.1.8. Source Audio Encoder x
5.1.8.1. Audio InfoFrame (AI) Bundle Bit-Fields 5.1.8.2. Audio Metadata Bundle Bit-Fields
6. HDMI Sink x
6.1. Sink Functional Description 6.2. Sink Interfaces 6.3. Sink Clock Tree 6.4. Link Training Procedure 6.5. Sink Deep Color Implementation When Support FRL = 0 6.6. Sink Deep Color Implementation When Support FRL = 1
6.1. Sink Functional Description x
6.1.1. Sink Word Alignment and Channel Deskew 6.1.2. Sink Descrambler, TMDS/TERC4 Decoder 6.1.3. Sink Auxiliary Decoder 6.1.4. Sink Auxiliary Packet Capture 6.1.5. Sink Video Resampler 6.1.6. Sink Auxiliary Data Port 6.1.7. Sink Audio Decoder 6.1.8. Status and Control Data Channel (SCDC) Interface 6.1.9. HDCP 1.4 RX Architecture 6.1.10. HDCP 2.3 RX Architecture 6.1.11. FRL Depacketizer 6.1.12. Sink FRL Character Block and Super Block Demapper 6.1.13. Sink FRL Descrambler and Decoder 6.1.14. Sink FRL Resampler 6.1.15. RX Oversampler 6.1.16. I2C Slave 6.1.17. I2C and EDID RAM Blocks 6.1.18. Variable Refresh Rate(VRR) and Auto Low Latency Mode (ALLM)
6.1.6. Sink Auxiliary Data Port x
6.1.6.1. Sink General Control Packet (GCP) 6.1.6.2. Sink Auxiliary Video Information (AVI) InfoFrame Bit-Fields 6.1.6.3. Sink HDMI Vendor Specific InfoFrame (VSI)
6.1.7. Sink Audio Decoder x
6.1.7.1. Audio InfoFrame (AI) Bundle Bit-Fields 6.1.7.2. Audio Metadata Bundle Bit-Fields
7. HDMI Parameters x
7.1. HDMI Source Parameters 7.2. HDMI Sink Parameters
8. HDMI Simulation Example x
8.1. Simulation Walkthrough
1. HDMI Intel® FPGA IP Quick Reference
2. HDMI Overview
3. HDMI Intel® FPGA IP Getting Started
4. HDMI Hardware Design Examples
5. HDMI Source
6. HDMI Sink
7. HDMI Parameters
8. HDMI Simulation Example
9. HDMI Intel® FPGA IP User Guide Archives
10. Document Revision History for the HDMI Intel® FPGA IP User Guide

4.3.1.2. PLL Intel FPGA IP Cores

Use the PLL Intel FPGA IP core as the HDMI PLL to generate reference clock for RX or TX transceiver, link speed, and video clocks for the HDMI RX or TX IP core.

The HDMI PLL is referenced by the arbitrary TMDS clock. For HDMI source, you can reference the HDMI PLL by a separate clock source in the VIP passthrough design, which contains frame buffer. The HDMI PLL for TX has the same desired output frequencies as RX across symbols per clock and color depth.

  • For TMDS bit rates ranging from 3,400 Mbps to 6,000 Mbps (HDMI 2.0), the TMDS clock rate is 1/40 of the TMDS bit rate. The HDMI PLL generates reference clock for RX/TX transceiver at 4 times the TMDS clock.
  • For TMDS bit rates below 3,400 Mbps (HDMI 1.4b), the TMDS clock rate is 1/10 of the TMDS bit rate. The HDMI PLL generates reference clock for RX/TX transceiver at identical rate as the TMDS clock.
If the TMDS link operates at TMDS bit rates below the minimum RX/TX transceiver link rate, your design requires oversampling and a factor of 5 is chosen. The minimum link rate of the RX/TX transceiver vary across device families and symbols per clock. The HDMI PLL generates reference clock for RX/TX transceiver at 5 times the TMDS clock.
Note: Place the PLL Intel FPGA block on the transmit path (pll_hdmi_tx) in the physical location next to the transceiver PLL.
Table 13.  HDMI PLL Desired Output Frequencies for 8-bpc VideoThis table shows an example of HDMI PLL desired output frequencies across various TMDS clock rates and symbols per clock for all supported device families using 8-bpc video.
Device Family Symbols Per Clock Minimum Link Rate (Mbps) TMDS Bit Rate (Mbps) Oversampling (5x) Required TMDS Clock Rate (MHz) RX/TX Transceiver Refclk (MHz) RX/TX Link Speed Clock (MHz) RX/TX Video Clock (MHz)
Arria V 2 611 270 Yes 27 135 13.5 13.5
742.5 No 74.25 74.25 37.125 37.125
1,485 No 148.5 148.5 74.25 74.25
2,970 No 297 297 148.5 148.5
4 1,000 270 Yes 27 135 6.75 6.75
742.5 Yes 74.25 371.25 18.5625 18.5625
1,485 No 148.5 148.5 37.125 37.125
5,940 No 148.5 594 148.5 148.5
Stratix V 2 611 540 Yes 54 270 27 27
1,620 No 162 162 81 81
5,934 No 148.35 593.4 296.7 296.7

The color depths greater than 8 bpc or 24 bpp are defined to be deep color. For a color depth of 8 bpc, the core carries the pixels at a rate of one pixel per TMDS clock. At deeper color depths, the TMDS clock runs faster than the source pixel clock to provide the extra bandwidth for the additional bits.

The TMDS clock rate is increased by the ratio of the pixel size to 8 bits:

  • 8 bits mode—TMDS clock = 1.0 × pixel or video clock (1:1)
  • 10 bits mode—TMDS clock = 1.25 × pixel or video clock (5:4)
  • 12 bits mode—TMDS clock = 1.5 × pixel or video clock (3:2)
  • 16 bits mode—TMDS clock = 2 × pixel or video clock (2:1)
Table 14.  HDMI PLL Desired Output Frequencies for Deep Color VideoThis table shows an example of HDMI PLL desired output frequencies across symbols per clock and color depths.
Symbols Per Clock Oversampling (5x) Required Bits Per Component TMDS Bit Rate (Mbps) 5 TMDS Clock Rate (MHz) RX/TX Transceiver Refclk (MHz) RX/TX Link Speed Clock (MHz) RX/TX Video Clock (MHz)
2 Yes 8 270 27 135 13.5 13.5
10 6 337.5 33.75 168.75 16.875 13.5
12 6 405 40.5 202.5 20.25 13.5
16 6 540 54 270 27 13.5
4 No 8 1,485 148.5 148.5 37.125 37.125
10 6 1,856.25 185.625 185.625 46.40625 37.125
12 6 2,227.5 222.75 222.75 55.6875 37.125
16 6 2,970 297 297 74.25 37.125
The default frequency setting of the HDMI PLL is fixed at possible maximum value for each clock for appropriate timing analysis.
Note: This default combination is not valid for any HDMI resolution. The core will reconfigure to the appropriate settings upon power up.
5 The TMDS bit rate is 10x the TMDS character rate. For information about how the TMDS character rate is derived from the pixel clock rate, refer to the HDMI Specifications.
6 For this release, deep color video is only demonstrated in VIP bypass mode. It is not available in VIP passthrough mode.
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