Analog Devices ADV7850 Hardware Manual page 383

Function
bksv_flag_intr
0 <<
1
hdcp_desired, Addr B8 (Main), Address 0xAF[7]
This control is used to enable input A/V content encryption.
Function
hdcp_desired
0 
1
frame_enc, Addr B8 (Main), Address 0xAF[4]
This control is used to enable encryption on the current frame.
Function
frame_enc
0
1 
bksv0[7:0], Addr B8 (Main), Address 0xBF[7:0] (Read Only)
This readback indicates the Bksv read from Rx by the HDCP controller.
bksv1[7:0], Addr B8 (Main), Address 0xC0[7:0] (Read Only)
This readback indicates the Bksv read from Rx by the HDCP controller.
bksv2[7:0], Addr B8 (Main), Address 0xC1[7:0] (Read Only)
This readback indicates the Bksv read from Rx by the HDCP controller.
bksv3[7:0], Addr B8 (Main), Address 0xC2[7:0] (Read Only)
This readback indicates the Bksv read from Rx by the HDCP controller.
bksv4[7:0], Addr B8 (Main), Address 0xC3[7:0] (Read Only)
This readback indicates the Bksv read from Rx by the HDCP controller.
enc_on, Addr B8 (Main), Address 0xB8[6] (Read Only)
This readback indicates if the A/V content is being encrypted at present.
Function
enc_on
0 
1
Rev. A May 2012
Description
Interrupt not active
Interrupt active. The KSVs from the downstream sink have been read and available in the
Memory Map
Description
Do not encrypt A/V content
Encrypt A/V content
Description
Do not encrypt current frame
Encrypt current frame
Description
Not encrypted
Encrypted
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ADV7850