cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 239

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

Table C-1. CX25870/871 Register Values for Autoconfiguration Modes 0–4 (1 of 3)
100381B
Auto-Config Register (index
0xB8) Hexadecimal Value:
Purpose of mode:
Type of Digital Input:
Active Resolution:
Overscan Ratio:
Horizontal Overscan
Ratio/Percentage (HOC):
Vertical Overscan
Ratio/Percentage (VOC):
Overscan Percentages Delta
(HOC - VOC):
H_CLKI = HTOTAL
VLINES_I = VTOTAL
H_BLANKI = Horizontal
Blanking Region
V_BLANKI = Vertical
Blanking Region
Type of Video Output:
Frequency of CLK (Hz)
Type of Clock:
Autoconfiguration Mode #
Appendix C Autoconfiguration Mode
Register Values and Details
28195793
Character
640x480
Desktop
Pixel or
Lower
13.79
13.58
NTSC
RGB
0.21
784
600
126
00
75
0
PAL-BDGHI
29500008
Character
Standard
640x480
Desktop
Pixel or
Conexant
16.56
16.67
–0.11
RGB
944
625
266
01
90
1
C
38769241
Character
800x600
Alternate
Desktop
Pixel or
21.62
11.52
10.10
NTSC
RGB
880
735
02
66
86
2
PAL-BDGHI
36000000
Character
800x600
Desktop
Pixel or
Lower
14.53
13.19
RGB
1.34
960
750
140
03
95
3
28195793
Character
640x480
Desktop
Pixel or
YCrCb
Lower
13.79
13.58
NTSC
0.21
784
600
126
04
75
4
C-1