HDMI Intel® Arria® 10 FPGA IP Design Example User Guide

ID 683156
Date 1/26/2024
Public

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4.6.1. HDCP Status Signals

There are several signals that are useful to identify the working condition of the HDCP IP cores. These signals are available at the design example top-level and are tied to the onboard LEDs:

Signal Name

Function

hdcp1_enabled_rx

RX HDCP1x IP Decryption Status

0: Inactive

1: Active

hdcp2_enabled_rx

RX HDCP2x IP Decryption Status

0: Inactive

1: Active

hdcp1_enabled_tx

TX HDCP1x IP Encryption Status

0: Inactive

1: Active

hdcp2_enabled_tx

TX HDCP2x IP Encryption Status

0: Inactive

1: Active

Refer to Table 55 and Table 56 for their respective LED placements.

The active state of these signals indicates that the HDCP IP is authenticated and receiving/sending encrypted video stream. For each direction, only HDCP1x or HDCP2x encryption/decryption status signals is active. For example, if either hdcp1_enabled_rx or hdcp2_enabled_rx is active, the HDCP on the RX side is enabled and decrypting the encrypted video stream from the external video source.