CX25870/871
1.0 Functional Description
Flicker-Free Video Encoder with Ultrascale Technology 1.2 GUI Controller Programmability and Frequency Requirement
1.2 GUI Controller Programmability and
Frequency Requirement
Programmability and frequency requirements for the Graphics Controller/Data
Master device are defined in Table 1-4 for the most common input resolutions.
Table 1-4. Maximum Programmability and Frequency Requirements
Maximum
End of Active to
Vsync
Maximum Total
Maximum Frequencies
Desktop Input Mode
Pixels/HTOTAL
Lines/VTOTAL
Lines
Line (kHz)
Pixel (MHz)
640 x 480
800 x 600
1075
1075
1625
665
835
834
76
91
92
39.860
49.450
49.630
31.563
39.997
59.063
800 x 600 (3:2
CLK mode)
1024 x 768 (3:2
CLK mode)
1625
1068
122
63.776
75.750
Table 1-4 contains maximum values for the dual display solutions that provide
8 percent to 32 percent horizontal and vertical overscan compensation. For larger
overscan compensation percentages, the values would be larger. The maximum
pixel frequency supported is 53.333 MHz for standard clocking mode and 80.000
MHz for 3:2 clocking mode.
100381B
Conexant
1-7
CONEXANT [ CONEXANT SYSTEMS, INC ]
