Video 3D Detection; Hdmi Interrupts Validity Checking Process; Group 1 Hdmi Interrupts; Group 2 Hdmi Interrupts - Analog Devices ADV7850 Hardware Manual

Video 3D Detection

15.5.4
The ADV7850 allows checking for 3D HDMI activity using the following controls.
video_3d_raw, IO, Address 0x74[2] (Read Only)
This readback indicates the raw status of the Video 3D signal.
Function
video_3d_raw
0 
1

HDMI Interrupts Validity Checking Process

15.5.5
All HDMI interrupts have a set of conditions that must be taken into account for validation in the display firmware. When the ADV7850
interrupts the display controller for an HDMI interrupt, the host must check that all validity conditions for that interrupt are met before
processing that interrupt.
For simplicity, HDMI interrupts can be subdivided into three groups, as described in Section 15.5.5.1, Section
Section 15.5.5.3.

15.5.5.1 Group 1 HDMI Interrupts

The interrupts listed in Table 105
• COMP mode (prim_mode set to 0x01)
• GR mode (prim_mode set to 0x02)
• HDMI mode (prim_mode set to values 0x05 or 0x06)

15.5.5.2 Group 2 HDMI Interrupts

The interrupts listed in Table 106

15.5.5.3 Group 3 HDMI Interrupts

The interrupts listed in Table 107
• ADV7850 is configured in HMDI mode
• TMDS_CLK_A_RAW is set to 1 if port A is the active HDMI port
• TMDS_CLK_B_RAW is set to 1 if port B is the active HDMI port
•
TMDS_CLK_C_RAW is set to 1 if port C is the active HDMI port
•
TMDS_CLK_D_RAW is set to 1 if port D is the active HDMI port
Rev. A May 2012
Description
Video 3D not detected
Video 3D detected
are valid irrespective of the mode in which the ADV7850 is configured, that is:

Table 105: HDMI Interrupts Group 1

are valid on the condition that the ADV7850 is configured in HMDI mode.

Table 106: HDMI Interrupts Group 2

Interrupts
internal_mute
video_pll_lck
aksv_update
v_locked
de_regen_lck
are valid under the following conditions:
Interrupts
tmds_clk_a
tmds_clk_b
tmds_clk_c
tmds_clk_d
cable_det_a
cable_det_b
cable_det_c
cable_det_d
403
ADV7850
15.5.5.2 and