ch7013b ETC-unknow, ch7013b Datasheet - Page 14

• Manufacturer Part Number: ch7013b
• Description: Digital Pc To Tv Encoder
• Manufacturer: ETC-unknow

4.4 Luminance and Chrominance Filter Options
The CH7013B contains a set of luminance filters to provide a controllable bandwidth output on both CVBS and S-
Video outputs. All values are completely programmable via the Video Bandwidth Register. For all graphs shown,
the horizontal axis is frequency in MHz, and the vertical axis is attenuation in dBs. The composite luminance and
chrominance video bandwidth output is shown in Table 13 .
VBI Pass-Through Support
The CH7013B provides the ability to pass-through data with minimal filtering, on vertical blanking lines 10-21 for
Intercast or close captioned applications (see register descriptions).
The composite luminance and chrominance frequency response is depicted in Figure 6 through 8 .
CHRONTEL
14
Table 13. Video Bandwidth
Mode
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
00
0.62
0.78
0.53
0.65
0.83
1.03
0.70
0.87
0.74
0.93
0.63
0.78
0.89
0.62
0.78
0.93
0.64
0.74
0.79
0.77
0.95
1.02
0.77
0.86
0.94
0.71
0.71
0.47
0.38
Chrominance
Bandwidth (MHz)
CBW[1:0]
01
0.68
0.85
0.58
0.71
0.91
1.13
0.77
0.95
0.81
1.02
0.68
0.86
0.98
0.68
0.85
1.02
0.71
0.81
0.87
0.85
1.03
1.12
0.85
0.94
1.03
0.78
0.78
0.51
0.41
10
0.80
1.00
0.68
0.83
1.07
1.32
0.90
1.12
0.95
1.20
0.80
1.00
1.15
0.80
1.00
1.20
0.83
0.95
1.02
1.00
1.22
1.32
0.99
1.11
1.21
0.91
0.91
0.60
0.48
11
0.95
1.18
0.81
0.99
1.27
1.57
1.07
1.33
1.13
1.42
0.95
1.19
1.36
0.95
1.18
1.42
0.98
1.13
1.21
1.18
1.44
1.56
1.18
1.31
1.44
1.08
1.08
0.71
0.57
0
2.26
2.82
1.93
2.36
3.03
3.75
2.56
3.17
2.69
3.39
2.28
2.84
3.25
2.26
2.82
3.39
2.35
2.70
2.89
2.82
3.44
3.73
2.82
3.13
3.43
2.58
2.58
1.70
1.37
CVBS
YCV
1
3.37
4.21
2.87
3.52
4.51
5.59
3.81
4.72
4.01
5.05
3.39
4.24
4.84
3.37
4.21
5.05
3.50
4.02
4.31
4.20
5.13
5.56
4.20
4.66
5.11
3.85
3.85
2.53
2.04
Luminance Bandwidth with Sin(X) /X (MHz)
YSV[1:0], YPEAK = 0
00
2.26
2.82
1.93
2.36
3.03
3.75
2.56
3.17
2.69
3.39
2.28
2.84
3.25
2.26
2.82
3.39
2.35
2.70
2.89
2.82
3.44
3.73
2.82
3.13
3.43
2.58
2.58
1.70
1.37
S-Video
01
3.37
4.21
2.87
3.52
4.51
5.59
3.81
4.72
4.01
5.05
3.39
4.24
4.84
3.37
4.21
5.05
3.50
4.02
4.31
4.20
5.13
5.56
4.20
4.66
5.11
3.85
3.85
2.53
2.04
201-0000-069
1X
5.23
6.53
4.46
5.46
7.00
8.68
5.92
7.33
6.22
7.84
5.26
6.58
7.52
5.23
6.53
7.84
5.43
6.24
6.68
6.53
7.97
8.63
6.52
7.24
7.94
5.97
5.97
3.92
3.17
YSV[1:0], YPEAK = 1
00
2.57
3.21
2.19
2.68
3.44
4.27
2.91
3.60
3.06
3.85
2.59
3.23
3.70
2.57
3.21
3.85
2.67
3.07
3.29
3.21
3.92
4.24
3.20
3.56
3.90
2.94
2.94
1.93
1.56
Rev. 1.2, 9/1/2004
CH7013B
S-Video
01
4.44
5.56
3.79
4.64
5.95
7.38
5.04
6.23
5.29
6.67
4.48
5.59
6.39
4.44
5.56
6.67
4.62
5.30
5.68
5.55
6.77
7.34
5.54
6.16
6.75
5.08
5.08
3.34
2.69
1X
5.23
6.53
4.46
5.46
7.00
8.68
5.92
7.33
6.22
7.84
5.26
6.58
7.52
5.23
6.53
7.84
5.43
6.24
6.68
6.53
7.97
8.63
6.52
7.24
7.94
5.97
5.97
3.92
3.17