Analog Devices Advantiv ADV7619 Hardware User's Manual page 95

Hardware User Guide
AKSV_UPDATE_A_RAW , IO, Address 0x88[0] (Read Only)
Status of Port A AKSV update interrupt signal. When set to 1 it indicates that transmitter has written its AKSV into HDCP registers for
Port A. Once set, this bit will remain high until it is cleared via AKSV_UPDATE_A_CLR.
Function
AKSV_UPDATE_A_RAW
0 (default)
1
AKSV_UPDATE_B_RAW , IO, Address 0x88[1] (Read Only)
Status of Port B AKSV Update Interrupt signal. When set to 1, it indicates that transmitter has written its AKSV into HDCP registers for
Port B. Once set, this bit remains high until it is cleared via AKSV_UPDATE_B_CLR.
Function
AKSV_UPDATE_B_RAW
0 
1
Second and Subsequent AKSV Updates
When the upstream transmitter writes its AKSV for the second time or more into the ADV7619 HDCP registers, the external controller
driving the ADV7619 should set KSV_LIST_READY to 1.
HDCP Registers Available in Repeater Map
In order to enable fast switching of the HDCP encrypted HDMI ports, the registers 0x00 to 0x42 in the repeater map are replicated for
each port. AUTO_HDCP_MAP_ENABLE and HDCP_MAP_SELECT[2:0] determine which port is currently visible to the user.
AUTO_HDCP_MAP_ENABLE , Addr 64 (Repeater), Address 0x79[3]
Selects which port will be accessed for HDCP addresses: the HDMI active port (selected by HDMI_PORT_SELECT, HDMI map) or the
one selected in HDCP_MAP_SELECT.
Function
AUTO_HDCP_MAP_ENABLE
0
1 (default)
HDCP_MAP_SELECT[2:0] , Addr 64 (Repeater), Address 0x79[2:0]
Selects which port will be accessed for HDCP addresses (0x00 to 0x42 in Repeater map). This only takes effect when AUTO HDCP MAN
ENABLE is 0.
Function
HDCP_MAP_SELECT[2:0]
000 (default)
001
BKSV[39:0] , Addr 64 (Repeater), Address 0x04[7:0]; Address 0x03[7:0]; Address 0x02[7:0]; Address 0x01[7:0]; Address 0x00[7:0] (Read Only)
The receiver key selection vector (BKSV) can be read back once the part has successfully accessed the HDCP ROM. The following
registers contain the BKSV read from the EEPROM.
Function
BKSV[39:0]
0x00[7:0]
0x01[7:0]
0x02[7:0 ]
0x03[7:0]
0x04[7:0]
AKSV[39:0] , Addr 64 (Repeater), Address 0x14[7:0]; Address 0x13[7:0]; Address 0x12[7:0]; Address 0x11[7:0]; Address 0x10[7:0]
The AKSV of the transmitter attached to the active HDMI port can be read back after an AKSV update. The following registers contain
the AKSV written by the Tx.
Description
No AKSV updates on Port A
Detected a write access to the AKSV register on Port A
Description
No AKSV updates on Port B
Detected a write access to the AKSV register on Port B
Description
HDCP data read from port given by HDCP_MAP_SELECT
HDCP data read from the active HDMI port
Description
Select Port A
Select Port B
Description
BKSV[7:0]
BKSV[15:8]
BKSV[23:16]
BKSV[31:24]
BKSV[39:32]
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