Hot Plug Assert - Analog Devices ADV7610 Hardware User's Manual

Hardware User Guide
FILT_5V_DET_TIMER[6:0], Addr 68 (HDMI), Address 0x56[6:0]
This control is used to set the timer for the digital glitch filter on the HDMI +5 V detect inputs. The unit of this parameter is two clock
cycles of the ring oscillator (~ 47 ns). The input must be constantly high for the duration of the timer; otherwise, the filter output remains
low. The output of the filter returns low as soon as any change in the +5 V power signal is detected.
Function
FILT_5V_DET_TIMER[6:0]
1011000 (default)
xxxxxxx
DIS_CABLE_DET_RST, Addr 68 (HDMI), Address 0x48[6]
This control disables the reset effects of cable detection. DIS_CABLE_DET_RST must be set to 1 if the +5 V pins are unused and left
unconnected.
Function
DIS_CABLE_DET_RST
0 (default)
1

HOT PLUG ASSERT

The ADV7610 features hot plug assert (HPA) control for its HDMI port. The purpose of the control and its corresponding output pin is
to communicate to an HDMI transmitter that it is possible to access the enhanced-extended display identification (E-EDID) connected to
the DDC bus.
HPA_MANUAL, Addr 68 (HDMI), Address 0x6C[0]
Manual control enable for the HPA output pins. Automatic control of these pins is disabled by setting this bit. Manual control is
determined by the HPA_MAN_VALUE_X (where X = A).
Function
HPA_MANUAL
0 (default)
1
HPA_MAN_VALUE_A, IO, Address 0x20[7]
A manual control for the value of HPA on Port A. Valid only if HPA_MANUAL is set to 1.
Function
HPA_MAN_VALUE_A
0
1 (default)
Note: The HPA_A pin is open drain. An external pull-up resistor is required to pull it high.
Description
Approximately 4.2 µs
Time duration of +5 V deglitch filter. Unit of this parameter is 2 clock cycles of the ring oscillator (~47 ns).
Description
Resets HDMI section if 5 V input pin corresponding to selected HDMI port (for example, RXA_5V for Port A)
is inactive
Does not use 5 V input pins as reset signal for HDMI section
Description
HPA takes its value based on HPA_AUTO_INT_EDID
HPA takes its value from HPA_MAN_VALUE_X
Description
0 V applied to HPA_A pin
High level applied to HPA_A pin
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