HDMI PHY Intel FPGA IP User Guide

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ID 732147
Date 10/31/2022
Public
Document Table of Contents
Document Table of Contents x
1. HDMI PHY Intel® FPGA IP Quick Reference 2. HDMI PHY Overview 3. HDMI PHY Intel® FPGA IP Getting Started 4. HDMI Hardware Design Examples 5. HDMI RX PHY 6. HDMI TX PHY 7. PHY Arbiter and Transceiver Merging 8. Document Revision History for the HDMI PHY Intel FPGA IP User Guide
2. HDMI PHY Overview x
2.1. Release Information 2.2. Device Family Support 2.3. Feature Support 2.4. Resource Utilization
3. HDMI PHY 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 4.2. HDMI Hardware Design Examples for Intel® Agilex™ F-Tile
5. HDMI RX PHY x
5.1. HDMI 2.0 (Support FRL = 0) 5.2. HDMI 2.1 (Support FRL = 1)
5.1. HDMI 2.0 (Support FRL = 0) x
5.1.1. Architecture 5.1.2. Dynamic Reconfiguration 5.1.3. IP Ports 5.1.4. IP Configuration Parameters 5.1.5. RX PHY Address Map
5.2. HDMI 2.1 (Support FRL = 1) x
5.2.1. Architecture 5.2.2. Dynamic Reconfiguration 5.2.3. IP Ports 5.2.4. IP Configuration Parameters 5.2.5. RX PHY Address Map
6. HDMI TX PHY x
6.1. HDMI 2.0 (Support FRL = 0) 6.2. HDMI 2.1 (Support FRL = 1)
6.1. HDMI 2.0 (Support FRL = 0) x
6.1.1. Architecture 6.1.2. Dynamic Reconfiguration 6.1.3. IP Ports 6.1.4. IP Configuration Parameters 6.1.5. TX PHY Address Map
6.2. HDMI 2.1 (Support FRL = 1) x
6.2.1. Architecture 6.2.2. Dynamic Reconfiguration 6.2.3. IP Ports 6.2.4. IP Configuration Parameters 6.2.5. TX PHY Address Map
7. PHY Arbiter and Transceiver Merging x
7.1. PHY Arbiter IP Ports 7.2. IP Configuration Parameters 7.3. PHY Merging and Arbiter Connection
7.3. PHY Merging and Arbiter Connection x
7.3.1. RX-Only and TX-Only Use Cases 7.3.2. Single RX and TX Simple Merge 7.3.3. Complex Straddled Channels
1. HDMI PHY Intel® FPGA IP Quick Reference
2. HDMI PHY Overview
3. HDMI PHY Intel® FPGA IP Getting Started
4. HDMI Hardware Design Examples
5. HDMI RX PHY
6. HDMI TX PHY
7. PHY Arbiter and Transceiver Merging
8. Document Revision History for the HDMI PHY Intel FPGA IP User Guide

5.1.2. Dynamic Reconfiguration

The RX reconfiguration management is handled predominantly by the RTL.

The software is mainly used to switch the reference clock over from the fixed rate clock to the RX TMDS clock (via IOPLL). This is because the transceiver requires a clock to be present at power‑up.

The reconfiguration management block measures the frequency of the incoming TMDS clock. It then uses the color depth provided by the HDMI RX core to select PLL configurations from a look-up-table. The PLL registers are then reprogrammed with these data and reset.

The TMDS clock is monitored along so that standard changes can be detected. The HDMI RX core also indicates when an I2C access has occurred and informs the RX PHY for the same purpose (e.g. a change in UHD to HD video may result in a different data rate but the same TMDS clock).

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