CX25870/871
Appendix C Autoconfiguration Mode Register Values and Details
Flicker-Free Video Encoder with Ultrascale Technology
Table C-9. CX25870/871 Register Values for Autoconfiguration Modes 43–47 (2 of 2)
Autoconfiguration Mode #
43
44
45
46
47
0x8A
0x8C
82
51
0D
E8
93
00
3F
33
A3
55
55
1F
24
F0
56
7E
47
8C
9B
29
26
18
70
8C
03
0D
24
E0
36
00
50
C5
4E
0C
0A
E5
76
79
44
85
D1
45
17
21
38
AD
1F
13
2B
C8
31
C3
40
D9
89
0D
0A
E5
75
78
44
85
33
28
15
1E
10
7E
03
58
4B
E0
36
92
54
0E
88
0C
2A
F0
57
80
48
8C
6E
DB
76
20
B0
0A
0B
71
5A
E0
36
00
50
72
1C
0D
24
F0
57
80
48
8C
1E
C0
15
1F
0x8E
0x90
0x92
0x94
0x96
0x98
0x9A
0x9C
0x9E
0xA0
0xA2
0xA4
0xA6
0xA8
0xAA
0xAC
0xAE
0xB0
0xB2
0xB4
NOTE(S):
1. RGB digital input denotes that the CX25870/871 will be configured to receive the RGB default pixel input mode after an
autoconfiguration command, which is 24-bit, RGB-multiplexed (i.e., IN_MODE[3:0] = 0000). If the desired RGB pixel input
mode is NOT 24-bit RGB multiplexed, the CX25870/871’s IN_MODE[3:0] bits must be programmed to the desired RGB pixel
input mode immediately before initiating a write to the CONFIG[5:0] bits.
2. YCrCb digital input denotes that the CX25870/871 will be configured to receive YCrCb pixel data after an autoconfiguration
command. The CX25870/871's IN_MODE[3:0] bits must be programmed to the desired YCrCb pixel input mode immediately
before initiating a write to the CONFIG[5:0] bits.
3. CX25870/871 registers not listed in this table (including IN_MODE[3:0]) do not get reprogrammed as a result of an
autoconfiguration command.
4. Pixel or Character signifies that this overscan ratio is acceptable for 8-clock per character graphics controllers or pixel-clock
controllers.
5. The CX25870/871 will be in master interface immediately after any autoconfiguration mode EXCEPT Mode 28 and Mode 29.
6. Mode 44 would ideally have 858 clocks per line. However, since 858 is not a multiple of 8, then 880 clocks per line was
utilized instead.
7. These autoconfiguration values assume a 13.500 MHz crystal resides between the XTALIN and XTALOUT pins. If the
14318_XTAL bit is set, then these autoconfiguration values will automatically change to reflect the presence of a 14.318 MHz
crystal.
100381B
Conexant
C-19
CONEXANT [ CONEXANT SYSTEMS, INC ]
