Analog Devices ADV8005, Hardware Reference Manual

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ADV8005 Hardware Reference Manual UG-707
di_cue_enable , Primary VSP Map, Address 0xE84D[0]
This bit is used to enable CUE correction.
Function
di_cue_enable Description
0 Disable CUE correction
1 (default) Enable CUE correction
3.2.3.7. Random Noise Reduction
There are several noise reduction algorithms in the ADV8005 that help with the reduction of common sources of video noise. The random noise
reduction (RNR) block reduces the random noise which may be introduced in analog broadcasting or capturing. It employs a temporal recursive
algorithm to stabilize the static regions while just processing the luma channel. Users can configure the register parameters to adjust the
algorithm according to their preference. The amount level of RNR can be configured using
di_rnr_level[1:0] .
RNR supports both interlaced and progressive input. It can be enabled or disabled using
di_rnr_enable .
di_rnr_enable , Primary VSP Map, Address 0xE84C[4]
This bit is used to enable random noise reduction (RNR).
Function
di_rnr_enable Description
0 (default) Disable RNR
1 Enable RNR
di_rnr_level[1:0] , Primary VSP Map, Address 0xE84F[1:0]
This signal sets the RNR level.
Function
di_rnr_level[1:0] Description
00 N/A
01 Low
10 (default) Middle
11 High
For the RNR feature to operate, two buffers in external memory must be allocated to store video information which will be used for noise
reduction purposes. The addresses of these two buffers can be set in the
pvsp_rnrbuf0_addr[31:0] and pvsp_rnrbuf1_addr[31:0] registers. The
size of each buffer should be larger than RNR_BUF_SIZE, which can be calculated as shown in Equation 21 .
height video input active width video input active byte SIZE BUF RNR _ _ _ _ _ _ ) ( _ _
× ≡
Equation 21: Calculating RNR Buffers
Note : Using RNR will use external memory bandwidth which may impact on other features such as OSD image storage as well as de-interlacing.
pvsp_rnrbuf0_addr[31:0] , Primary VSP Map, Address 0xE820[7:0]; Address 0xE821[7:0]; Address 0xE822[7:0]; Address 0xE823[7:0]
Sets the start address of random noise reduction information buffer 0. RNR buffers are needed only when random noise reduction is enabled.
Function
pvsp_rnrbuf0_addr[31:
0]
Description
0x000FD200  Default
0xXXXXXXXX Start address of RNR buffer 0
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