Xilinx HDMI 1.4 Product Manual page 16

Audio Infoframe
Only number of channels are set for Audio Infoframe and it is hard-coded to 2 in the HDMI
TX Subsystem driver. Other fields are not updated and remain as zero always.
X-Ref Target - Figure 2-9
HDCP
As part of the HDMI TX Subsystem, the Xilinx® LogiCORE™ IP High-bandwidth Digital
Content Protection (HDCP™) transmitters are designed for transmission of audiovisual
content securely between two devices that are HDCP capable. In this HDMI TX Subsystem,
both HDCP 1.4 and HDCP 2.2 Transmitter IP cores are included. However because HDCP 2.2
supersedes the HDCP 1.4 protocol and does not provide backwards compatibility, you need
to decide and choose targeted content protection schemes from the Vivado IDE. Four
different options are available to choose from:
• No HDCP
• HDCP 1.4 only
• HDCP 2.2 only
• HDCP 1.4 and HDCP 2.2
HDMI 1.4/2.0 TX Subsystem
PG235 October 4, 2017 www.xilinx.com
Chapter 2: Product Specification
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