Appendix C Autoconfiguration Mode Register Values and Details
CX25870/871
Flicker-Free Video Encoder with Ultrascale Technology
Table C-6. CX25870/871 Register Values for Autoconfiguration Modes 27–30 (1 of 2)
Autoconfiguration Mode #
27
Reserved
28(5)
29(5)
30
Auto-Config Register (index
0xB8) Hexadecimal Value:
34
35
36
Purpose of Mode:
"DVD/CCIR601 Input, "DVD/CCIR601 Input,
Desktop
Slave interface"
YCrCb
Slave interface"
YCrCb
Type of Digital Input:
Active Resolution:
Overscan Ratio:
YCrCb
720x480
720x576
1024x768
Lower
None (DVD
Playback)
None (DVD
Playback)
Horizontal Overscan
Ratio/Percentage (HOC):
0.00
0.00
0.00
0.00
0.00
0.00
11.97
11.93
0.04
Vertical Overscan
Ratio/Percentage (VOC):
Overscan Percentages Delta
(HOC - VOC):
H_CLKI = HTOTAL
858
262
10
864
312
10
1170
945
VLINES_I = VTOTAL
H_BLANKI = Horizontal
Blanking Region
127
V_BLANKI = Vertical
Blanking Region
19
22
115
Type of Video Output:
Frequency of CLK (Hz)
Type of Clock:
NTSC
PAL-BDGHI
NTSC
27000000
27000000
66272724
Pixel Only
Pixel or Character
Pixel or Character
Register Address
Register Value
Register Value
Register Value
0x38
0x76
0x78
0x7A
0x7C
0x7E
0x80
0x82
0x84
0x86
0x88
0x8A
0x8C
10
B4
D0
7E
90
58
03
14
F0
26
15
5A
0A
10
C0
D0
7E
98
54
15
17
20
A6
FA
60
0A
20
F8
00
D0
EA
E0
37
21
D7
4A
00
92
7F
C-12
Conexant
100381B
CONEXANT [ CONEXANT SYSTEMS, INC ]
