cx25870 Conexant Systems, Inc., cx25870 Datasheet - Page 252

• 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-7. CX25870/871 Register Values for Autoconfiguration Modes 31–36 (1 of 2)
C-14
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
0x8C
Reserved
31
RGB
40
Desktop
640x480
Higher
18.34
19.34
–1.00
770
645
113
100
NTSC
29769241
Pixel Only
Register
Value
32
00
64
80
8C
9E
6E
B5
2A
C5
27
00
02
71
Conexant
RGB
PAL-BDGHI
41
Desktop
640x480
Higher
20.27
19.79
0.48
950
650
271
104
30875015
Pixel Only
Flicker-Free Video Encoder with Ultrascale Technology
Register
Value
AC
33
00
B8
80
92
72
F3
33
E9
27
00
B6
0F
Desktop
RGB
800x600
19.26
19.34
–0.08
1170
323
125
Pixel Only
42
Higher
805
NTSC
56454552
Register
Value
34
B0
C8
AC
2D
2A
C5
20
58
20
39
00
92
43
43
Desktop
RGB
800x600
19.03
18.40
0.63
950
800
131
122
PAL-BDGHI
37999992
Pixel Only
Higher
Register
Value
35
B2
D4
AA
EC
B6
00
80
20
57
31
39
00
83
CX25870/871
44
Desktop
YCrCb
640x480
Higher
18.34
19.34
–1.00
770
645
113
100
NTSC
29769241
Pixel Only
Register
Value
100381B
36
8C
B5
2A
C5
00
64
80
9E
6E
27
00
02
71