Analog Devices ADV7850 Hardware Manual page 170

de_regen_filter_locked, Addr 68 (HDMI), Address 0x07[5] (Read Only)
This readback displays the DE regeneration filter lock status. It indicates if the DE regeneration section has locked to the received DE
and if the horizontal synchronization parameter measurements are valid for readback.
Function
de_regen_filter_locked
0 
1
de_regen_lck_raw, IO, Address 0x74[0] (Read Only)
This readback indicates the raw status of the DE regeneration lock signal.
Function
de_regen_lck_raw
0 
1
total_line_width[13:0], Addr 68 (HDMI), Address 0x1E[5:0]; Address 0x1F[7:0] (Read Only)
This readback displays the total number of pixels per line. The total line width is a horizontal synchronization measurement. This
measurement is valid only when the DE regeneration filter has locked.
Function
total_line_width[13:0]
xxxxxxxxxxxxx
line_width[12:0], Addr 68 (HDMI), Address 0x07[4:0]; Address 0x08[7:0] (Read Only)
This readback displays the number of active pixels in a line. Line width is a horizontal synchronization measurement. This
measurement is only valid when the DE regeneration filter is locked.
Function
line_width[12:0]
00000000000 
xxxxxxxxxxx
hsync_front_porch[12:0], Addr 68 (HDMI), Address 0x20[4:0]; Address 0x21[7:0] (Read Only)
This readback displays the total number of pixels in the front porch. The HSync front porch width is a horizontal synchronization
measurement. The unit of this measurement is unique pixels. This measurement is valid only when the DE regeneration filter is locked.
HSync front porch width is a horizontal synchronization measurement.
Function
hsync_front_porch[12:0
]
xxxxxxxxxxx
hsync_pulse_width[12:0], Addr 68 (HDMI), Address 0x22[4:0]; Address 0x23[7:0] (Read Only)
This readback displays the total number of pixels in the HSync pulse. The HSync pulse width is a horizontal synchronization
measurement. The unit of this measurement is unique pixels. This measurement is valid only when the DE regeneration filter has
locked.
Rev. A May 2012
Description
DE regeneration not locked
DE regeneration locked to incoming DE
Description
DE regeneration block not locked to incoming DE signal
DE regeneration block locked to incoming DE signal
Description
Total number of pixels per line
Description
Number of active pixels per line
Number of active pixels per line
Description
Total number of pixels in front porch
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ADV7850