GTS Transceiver PHY User Guide

ID 817660
Date 10/07/2024
Public
Document Table of Contents

3.3.5.2. PMA Configuration Rules for HDMI Mode

When you select HDMI for the PMA configuration rules setting in the GTS PMA/FEC Direct PHY Intel FPGA IP, the TX PLL integer mode reference clock frequency parameter for System PLL clocking mode can be set to the minimum value of 25 MHz. Due to Dynamic Reconfiguration requirements of the HDMI protocol, only the System PLL clocking mode is applicable for HDMI applications. This HDMI selection also enables you to implement the dual simplex mode for the GTS PMA/FEC Direct PHY Intel FPGA IP. Refer to the GTS Transceiver Dual Simplex Interfaces User Guide for details on how to implement the dual simplex mode.

The following configurations are supported in HDMI mode.
Table 29.  Configurations Supported in HDMI Mode
Configuration Data Rate per Lane (Gbps) Refclk Frequencies (MHz) Number of Lanes
HDMI 2.0 (Including HDMI 1.4b) 0.25 - 6 25 - 340 3 lanes
HDMI 2.1 3, 6, 8, 10, 12 100 3 or 4 lanes
Note: HDMI is a backward compatible protocol, therefore HDMI 1.4b is also supported. For data rates less than 1 Gbps, you must use oversampling to comply with the minimum data rate of the GTS transceiver. A reference clock of less than 100 MHz for the System PLL is only applicable in HDMI mode.

You can implement the HDMI mode configuration using the GTS PMA/FEC Direct PHY Intel FPGA IP and combine it with the GTS HDMI Intel FPGA IP, which provides the upper layer protocol implementation for the HDMI protocol. There are design examples that demonstrate the complete solution of the HDMI protocol that you can generate from the GTS HDMI Intel FPGA IP. Refer to the GTS HDMI Intel FPGA IP Design Example User Guide for more details.