cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 225

• Manufacturer Part Number: cx25870
• Description: Video Encoder With Adaptive Flicker Filtering And Hdtv Output
• Manufacturer: Conexant Systems, Inc.

CX25870/871
Flicker-Free Video Encoder with Ultrascale Technology
Table A-22. Overscan Values 1024 x 768 NTSC, Pixel-Based Controller, 1-Pixel Resolution, >1.50 !s. Hblank (2 of 4)
100381B
H_CLKI
1155
1152
1150
1190
1150
1149
1197
1197
1197
1197
1200
1200
1195
1146
1145
1200
1197
1143
1200
1200
1140
1140
1200
1137
1205
1134
1135
1134
1134
1134
1134
Graphics Controller
Total
V_LINESI
1050
1008
1050
1025
1000
1029
1008
1050
1050
1050
1050
1025
1000
1050
960
945
945
975
925
945
945
966
950
987
945
945
924
945
945
950
975
V_ACTIVEO
Active
210
192
214
214
200
192
197
207
218
202
196
200
214
192
214
209
213
192
205
214
214
192
219
192
214
197
214
213
202
192
207
Encoder Pixels
Conexant
H_CLKO
Appendix A Scaling and I/0 Timing Register Calculations
Total
1408
1536
1380
1428
1472
1532
1558
1482
1406
1520
1568
1536
1434
1528
1374
1472
1444
1524
1504
1440
1368
1520
1408
1516
1446
1476
1362
1368
1440
1512
1404
Horizontal
12.22
19.53
10.44
13.45
16.03
19.32
20.67
12.09
18.69
21.18
19.53
13.81
19.11
10.05
16.03
14.41
17.82
14.17
18.69
12.22
18.47
14.52
16.26
14.17
18.26
11.97
16.6
18.9
9.65
9.25
9.65
Overscan (Percent)
Vertical
13.58
20.99
11.93
11.93
20.99
18.93
14.81
10.29
16.87
19.34
11.93
20.99
11.93
13.99
12.35
20.99
15.64
11.93
11.93
20.99
20.99
11.93
18.93
11.93
12.35
16.87
20.99
14.81
17.7
17.7
9.88
Delta
-1.36
-1.45
-1.66
-1.66
-1.88
-1.89
-2.09
-2.28
-2.52
-2.67
-2.68
-2.69
-2.73
-2.85
1.51
1.74
1.79
1.81
1.83
1.84
1.88
2.04
2.06
2.18
2.23
2.34
2.59
-1.5
-2.3
-2.7
1.8
A-43