cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 248

• 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-5. CX25870/871 Register Values for Autoconfiguration Modes 22–26 (1 of 2)
C-10
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
26
Desktop
YCrCb
800x600
Lower
13.79
13.58
0.21
1176
750
329
94
NTSC
52867138
Pixel or
Character
Register
Value
BA
D9
D4
22
20
C0
20
A6
98
22
38
00
27
Desktop
YCrCb
800x600
Standard
16.42
15.97
0.45
950
775
131
109
PAL-BDGHI
36812508
Pixel Only
Register
Conexant
Value
23
00
34
20
AE
CE
A0
2B
2D
39
00
F4
Flicker-Free Video Encoder with Ultrascale Technology
RGB
30
Boot-Up
Screen
720x400
Standard
17.47
17.70
–0.23
1053
525
291
76
NTSC
33136345
Pixel or
9-Character
only
Register
Value
DD
D0
CA
24
00
3A
9C
B0
88
27
28
00
31
Boot-Up
Screen
RGB
720x400
Standard
15.12
13.19
1.93
1305
500
411
64
PAL-BDGHI
32625000
Pixel or
9-Character
only
Register
Value
D0
25
00
28
9A
B6
80
E3
29
FC
28
00
CX25870/871
RGB
32
Desktop
1024x768
Lower
11.97
11.93
0.04
1170
945
127
115
NTSC
66272724
Pixel Only
Register
Value
26
D0
EA
D7
4A
20
F8
00
E0
37
21
00
100381B