CX25870/871
Appendix A Scaling and I/0 Timing Register Calculations
Flicker-Free Video Encoder with Ultrascale Technology
Table A-11. Overscan Values, 800 x 600 NTSC, Character Clock-Based Controller, 8-Pixel Resolution, 0–1.5 µs HBlank
Controller Pixels
Total
Encoder Pixels
Overscan (Percent)
Active
Total
H_CLKI
V_LINESI
V_ACTIVEO
H_CLKO
Horizontal
Vertical
Resolution
800
800
800
800
800
800
840
840
840
840
840
840
840
840
840
840
840
840
840
840
840
840
880
777
819
798
756
714
735
780
785
765
790
750
770
755
775
740
760
730
745
720
735
725
715
735
203
193
198
209
221
215
202
201
206
200
210
205
209
204
213
208
216
212
219
215
218
221
215
1184
1248
1216
1152
1088
1120
1248
1256
1224
1264
1200
1232
1208
1240
1184
1216
1168
1192
1152
1176
1160
1144
1232
18.45
22.63
20.59
16.18
11.25
13.79
22.63
23.12
21.11
23.61
19.53
21.62
20.07
22.13
18.45
20.59
17.33
18.99
16.18
17.89
16.76
15.59
21.62
16.46
20.58
18.52
13.99
9.05
1.98
2.05
2.07
2.19
2.20
2.26
5.76
5.84
5.88
5.91
5.95
5.99
6.07
6.08
6.10
6.19
6.22
6.24
6.30
6.37
6.47
6.54
10.10
11.52
16.87
17.28
15.23
17.70
13.58
15.64
13.99
16.05
12.35
14.40
11.11
12.76
9.88
11.52
10.29
9.05
11.52
100381B
Conexant
A-25
CONEXANT [ CONEXANT SYSTEMS, INC ]
