SPRUJ52C june 2022 – july 2023 AM69 , AM69A , TDA4AH-Q1 , TDA4AP-Q1 , TDA4VH-Q1 , TDA4VP-Q1
In this mode, the HDCP functionality is fully supported by the MHDPTX Controller. The AKE phase and the corresponding cryptographic operations are handled by the FW.
Following the AKE phase, the FW initializes the stream cipher with the session key.
The host processor communicates with the MHDPTX Controller for:
Commands that carry secret information must be protected from tampering. Therefore, SAPB must be used to carry secured commands over mailbox.
HDCP command | Description |
---|---|
HDCP_GENERAL_2_SET_LC | Refer to HDCP 2.2 Appendix A |
HDCP_GENERAL_SET_SEED | External TRNG must be used for generating a true random seed number. Therefore, it is expected that the seed number will meet the high entropy level. |
HDCP2_TX_RESPOND_KM | Refer to HDCP 2.2 Appendix A |
HDCP1_TX_SEND_KEYS | Refer to HDCP 1.4 Appendix B |
HDCP2_TX_STORE_KM | Refer to HDCP 2.2 Appendix A |
Figure 12-483 and Figure 12-484 show the operation sequences for an embedded HDCP 2.2 and HDCP 1.4