Figure 106: Sd Luma Ssaf Filter, Programmable Responses - Analog Devices ADV8003 Hardware Manual

1 Pass-band ripple is the maximum fluctuation from the 0 dB response in the pass band, measured in decibels. The pass band is defined to have 0 Hz to fc (Hz)
frequency limits for a low-pass filter and 0 Hz to f1 (Hz), and f2 (Hz) to infinity for a notch filter, where fc, f1, and f2 are the −3 dB points.
2 3 dB bandwidth refers to the −3 dB cutoff frequency.
The luma filter supports several different frequency responses, including two low-pass responses, two notch responses, an extended
(SSAF) response with or without gain boost attenuation, a CIF response, and a QCIF response. These can be configured using
luma_filter_sel[2:0].
luma_filter_sel[2:0], Encoder Map, Address 0xE480[4:2]
This signal is used to configure the luma filters for SD data.
Function
luma_filter_sel[2:0]
000
001
010
011
100 
101
110
111
If SD SSAF gain is enabled, there are 13 response options in the −4 dB to +4 dB range. The desired response can be programmed using
register 0xA2. The variation in frequency responses is shown in
and controlling the SSAF filter gain are described below.
Rev. B, August 2013
Filter Pass-Band Ripple (dB)
Luma Notch PAL 0.1
Luma SSAF 0.04
Luma CIF 0.127
Luma QCIF Monotonic
Chroma 0.65 MHz Monotonic
Chroma 1.0 MHz Monotonic
Chroma 1.3 MHz 0.09
Chroma 2.0 MHz 0.048
Chroma 3.0 MHz Monotonic
Chroma CIF Monotonic
Chroma QCIF Monotonic
Description
LPF NTSC
LPF PAL
Notch NTSC
Notch PAL
SSAF Luma
Luma CIF
Luma QCIF
Reserved
4
2
0
–2
–4
–6
–8
–10
–12
0 1

Figure 106: SD Luma SSAF Filter, Programmable Responses

3 dB Bandwidth (MHz)
1
3.1/5.6/6.4
6.45
3.02
1.5
0.65
1
1.395
2.2
3.2
0.65
0.5
Figure 106, Figure 107, and
2 3 4 5
FREQUENCY (MHz)
316
ADV8003 Hardware Manual
2
Figure 108. The registers required for enabling
6 7