Analog Devices ADV7850 Hardware Manual page 162

When hdmi_pixel_repetition is non zero, video pixel data is discarded and the pixel clock frequency is divided by
(hdmi_pixel_repetition) + 1.
hdmi_pixel_repetition[3:0], Addr 68 (HDMI), Address 0x05[3:0] (Read Only)
This readback provides the current HDMI pixel repetition value decoded from the AVI InfoFrame received. The HDMI receiver
automatically discards repeated pixel data and divides the pixel clock frequency appropriately as per the pixel repetition value.
Function
hdmi_pixel_repetition[
3:0]
0000 
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010 - 1111
derep_n_override, Addr 68 (HDMI), Address 0x41[4]
This control allows the user to override the pixel repetition factor. derep_n[3:0] is used instead of hdmi_pixel_repetition[3:0] to discard
video pixel data from the incoming HDMI stream.
Function
derep_n_override
0 
1
derep_n[3:0], Addr 68 (HDMI), Address 0x41[3:0]
This control is used to set the derepetition value if derepetition is overridden by setting derep_n_override.
Function
derep_n[3:0]
0000 
xxxx
bg_pix_rep[3:0], Addr 68 (HDMI), Address 0xEA[7:4] (Read Only)
This readback indicates the background port pixel repetition status for the background HDMI port determined by
bg_meas_port_sel[1:0]. It provides the pixel repetition value in AVI InfoFrame and is updated when an update request is made via
bg_meas_req. This measurement is valid only when bg_param_lock is set to 1.
Rev. A May 2012
Description
1x
2x
3x
4x
5x
6x
7x
8x
9x
10x
Reserved
Description
Automatic detection and processing of pixel repeated modes using AVI InfoFrame
information
Enables manual setting of pixel repetition factor as per derep_n[3:0]
Description
derep_n+1 indicates pixel and clock discard factor
derep_n+1 indicates pixel and clock discard factor
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ADV7850