E-Edid Data Configuration - Analog Devices ADV7850 Hardware Manual

disable_hdcp_ddc_c, Addr 64 (Repeater), Address 0x7B[2]
This control is used to disable the DDC port in the HDCP address.
Function
disable_hdcp_ddc_c
0 
1
disable_hdcp_ddc_d, Addr 64 (Repeater), Address 0x7B[3]
This control is used to disable the DDC port in the HDCP address.
Function
disable_hdcp_ddc_d
0 
1

7.5 E-EDID DATA CONFIGURATION

The ADV7850 features an SRAM memory that can store an E-EDID. This internal E-EDID feature can be used for the four HDMI ports,
A, B, C, and D. It is also possible to use an external device storage for the E-EDID data on each port, or a combination of internal E-EDID
for some port(s) and external storage for the other port(s).
The following controls are provided to enable the internal E-EDID for each of the four HDMI ports.
man_edid_a_enable, Addr 64 (Repeater), Address 0x74[0]
This control is used to manually enable I2C access to the internal EDID ram from DDC port A, when the load_edid and cksum_calc
operations are finished.
Function
man_edid_a_enable
0 
1
man_edid_b_enable, Addr 64 (Repeater), Address 0x74[1]
This control is used to manually enable I2C access to the internal EDID ram from DDC Port B, when the load_edid and cksum_calc
operations are finished.
Function
man_edid_b_enable
0 
1
man_edid_c_enable, Addr 64 (Repeater), Address 0x74[2]
This control is used to manually enable I2C access to the internal EDID ram from DDC Port C, when the load_edid and cksum_calc
operations are finished.
Rev. A May 2012
Description
HDCP address in DDC port is active if port is active or BG
Disable DDC HDCP address, requests to it will not be acknowledged nor serviced
Description
HDCP address in DDC port is active if port is active or BG
Disable DDC HDCP address, requests to it will not be acknowledged nor serviced
Description
Manual enable not active for E-EDID on Port A
Manual enable active for E-EDID on Port A
Description
Manual enable not active for E-EDID on Port B
Manual enable active for E-EDID on Port B
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ADV7850