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ADV7842 and “E-EDID/Repeater controller” in “Power-Down mode 0”

Question asked by Sasa on May 20, 2013
Latest reply on May 30, 2013 by Sasa

Hello

 

“UG-214.pdf#page26” state for hardware power-down with internal E-EDID availability:

“The RESET pin must go low before or at the same time as the main system supply is removed.
The RESET pin must go low before or at the same time as the PWRDN1 goes low.”

 

When RESET pin is Low next register is set in his default state:

- EDID_A_ENABLE=EDID_B_ENABLE=0 ->“E-EDID for Port A,B disabled”, p.178
- EDID_A_ENABLE_CPU=EDID_B_ENABLE_CPU=0 -> “Disabled”

 

Internal E-EDID is disabled – how reading EDID from HDMI will work?

 

Thanks,
Alexander

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