cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 254

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

Appendix C Autoconfiguration Mode Register Values and Details
Table C-8. CX25870/871 Register Values for Autoconfiguration Modes 37–42 (1 of 2)
C-16
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 #
Register Address
0x38
0x76
0x78
0x7A
0x7C
0x7E
0x80
0x82
0x84
0x86
0x88
0x8A
YCrCb
45
Desktop
640x480
Higher
20.27
19.79
0.48
950
650
271
104
PAL-BDGHI
30875015
Pixel Only
Register
Value
AC
37
00
B8
80
92
72
33
E9
27
00
B6
F3
46
Desktop
YCrCb
800x600
Higher
19.26
19.34
–0.08
1170
805
323
125
NTSC
56454552
Pixel Only
Register
Value
38
58
B0
C8
AC
2D
2A
C5
20
20
39
00
92
Conexant
47
Desktop
YCrCb
800x600
Higher
19.03
18.40
0.63
950
800
131
122
PAL-BDGHI
Pixel Only
37999992
Register
Flicker-Free Video Encoder with Ultrascale Technology
Value
39
B2
D4
AA
EC
B6
00
80
20
57
31
39
00
50
Desktop
RGB
800x600
15.59
15.64
–0.05
1170
323
105
NTSC
Pixel Only
Standard
770
54000000
Register
Value
40
20
20
AA
BE
25
CE
38
00
F0
9E
F3
92
51
Game
RGB
320x200,
Pix_Double Set
Standard
21.86
30.90
–9.04
2000
315
453
65
PAL-BDGHI
31500000
Pixel or
Character
Register
Value
41
B0
CA
D0
40
E0
80
94
78
09
42
27
00
CX25870/871
52
Desktop
RGB
1024x768
Higher
18.04
18.11
–0.07
1170
1015
127
150
NTSC
71181793
Pixel Only
Register
Value
100381B
42
20
C8
00
E0
FC
AB
28
C8
4B
00
92
FA