DisplayPort Stratix® 10 FPGA IP Design Example User Guide

ID 683887
Date 4/10/2024
Public
Document Table of Contents

3.4.3.1.3. hdcp2x_rx_kmem.v file

For hdcp2x_rx_kmem.v file
  • To identify the correct HDCP2 RX DCP key file for hdcp2x_rx_kmem.v, make sure the first 4 bytes of the file are “0x00, 0x00, 0x00, 0x02”.
  • The keys in the DCP key files are in little-endian format.
Figure 20. Byte Mapping from HDCP2 RX DCP Key File into hdcp2x_rx_kmem.v

The following figure shows the exact byte mapping from HDCP2 RX DCP key file into hdcp2x_rx_kmem.v

Note: The byte number displays in the following format:
  • Key size in bytes * key number + byte number in current row + constant offset + row size in bytes * row number.
  • 862*n indicates that each key set has 862 bytes.
  • 16*y indicates that each row has 16 bytes. There is an exception in cert_rx_prod where ROW 32 has only 10 bytes.
Figure 21. HDCP2 RX DCP Key File Filling with Junk Values
Figure 22. Wire Arrays of hdcp2x_rx_kmem.v

The following figure shows the wire arrays for hdcp2x_rx_kmem.v (cert_rx_prod, kprivrx_qinv_prod, and lc128_prod) map to the example of HDCP2 RX DCP key file in Figure 21.