Global Pin Control - Analog Devices ADV7610 Hardware User's Manual

Hardware User Guide
Entering Power-Down Mode 0 via Software
The ADV7610 can be put into Power-Down Mode 0 by setting
method allows an external processor to put the system in which the
HDMI cores of the ADV7610
through the POWER_DOWN bit.
Power-Down Mode 1
Power-Down Mode 1 is enabled when the following conditions are met:
•
POWER_DOWN bit is set to 1
•
CEC section is enabled by setting CEC_POWER_UP to 1
Power-Down Mode 1 provides the same functionality as Power-Down Mode 0, with the addition of the following sections:
•
XTAL clock
•
CEC section
•
Interrupt controller section
The following pads are enabled in Power-Down Mode 1:
•
Same pads as enabled in Power-Down Mode 0
•
CEC pad
•
INT1 and INT2 interrupt pads
The internal EDID is also accessible through the DDC bus for Port A in Power-Down Mode 0 and Power-Down Mode 1.

GLOBAL PIN CONTROL

Reset Pin
The ADV7610 can be reset by a low reset pulse on the reset pin with a minimum width of 5 ms. It is recommended to wait 5 ms after the
low pulse before an I 2 C write is performed to the ADV7610.
Reset Controls
MAIN_RESET, IO, Address 0xFF[7] (Self-Clearing)
Main reset where I 2 C registers are reset to their default values.
Function
MAIN_RESET
0 (default)
1
Tristate Output Drivers
PADS_PDN, IO, Address 0x0C[0]
A power-down control for pads of the digital output s. When enabled, the pads are tristated and the input path is disabled. This control
applies to the DE, HS, VS/FIELD/ALSB, INT1, and LLC pads and to the P0 to P23 pixel pads.
Function
PADS_PDN
0 (default)
1
DDC_PWRDN[7:0], Addr 68 (HDMI), Address 0x73[7:0]
A power-down control for DDC pads.
Function
DDC_PWRDN[7:0]
0 (default)
1
are kept powered up from the main power (for example, ac power) and set in or out of power-down Mode 0
Description
Normal operation
Applies main I 2 C reset
Description
Powers up pads of digital output pins
Powers down pads of digital output pins
Description
Powers up DDC pads
Powers down DDC pads
POWER_DOWN to 1 (default value) and
ADV7610 is integrated into standby mode. In this case, the CP and
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CEC_POWER_UP to 0. This