cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 184

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

Appendix A Scaling and I/0 Timing Register Calculations
Table A-1. Target Video Parameters for Standard Definition TV Output Formats (1 of 2)
A-2
HSYNC Width
(!s)
HSYNC and
VSYNC Height (V)
HSYNC Rise/Fall
Time (10% to
90%) (ns)
Burst or
Subcarrier Start
(!s)
Burst Width (!s)
Subcarrier
Frequency
Burst or
Subcarrier Height
(V)
Phase Alternation NO
Number of Lines
per Frame
Line Frequency
(Hz)
Field Frequency
(Hz)
Setup
First Active Line
Last Active Line
HSYNC to Blank
End (!s)
Blank Begin to
HSYNC (!s)
Black to 100%
White (V)
Description
Parameter
(5)
(Hz)
4.7
0.286
150
5.3
2.514
(9 cycles)
3579545
0.2857
525
15734.264 15734.264 15734.264
59.94
YES
22
262
9.2[9.037] 9.2
1.5[1.185] 1.5
0.661
NTSC-M
(3)
(3)
4.7
0.286
150
5.3
2.514
(9 cycles)
3579545
0.2857
NO
525
59.94
NO
22
262
0.714
NTSC-J
(3)
(3)
4.7
0.287
150
5.8
2.52
(9cycles)
3579611.49 4433618.75 4433618.75 4433618.75 3582056.25 for=4406250
0.306
YES
525
59.94
YES
22
262
9.2
1.5
0.661
(3)
PAL-M
(3)
Conexant
4.7
0.3
150
5.3
2.25
(10 cycles)
0.3
YES
525
15734.264
59.94
NO
22
262
9.2
1.5
0.7
PAL-60
(3)
(3)
Flicker-Free Video Encoder with Ultrascale Technology
4.7
0.3
200
5.6
2.25
(10 cycles)
0.3
YES
625
15625
50
NO
23
309
10.5[9.778] 9.2
1.5[0.889]
0.7
B,D,G,H,I
(4)
PAL-
(1)
(4)
4.7
0.2857
200
5.6
2.25
(10 cycles)
0.3
YES
625
15625
50
YES
23
309
1.5
0.661
(4)
PAL-N
(4)
4.7
0.3
200
5.6
2.51
(9 cycles)
0.3
YES
625
15625
50
NO
23
309
10.5
1.5
0.7
PAL-Nc
(4)
(4)
CX25870/871
10.5
4.7
0.3
200
5.6
N/A
fob=4250000
0.161
NO
625
15625
50
NO
23
309
1.5
0.7
(4)
SECAM
100381B
(4)