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CX25870 View Datasheet(PDF) - Conexant Systems

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CX25870 Datasheet PDF : 4 Pages
1 2 3 4
Automatic Configuration Modes
The CX25874 and CX25875 offer enhanced automatic
configuration mode functionality. A total of 48 different
modes are now available which provide pre-programmed
register settings for more than 95% of typical TV-out
settings. For example, PAL-M can be automatically
configured to an input resolution of 640 x 480 RGB with
a moderate amount of overscan compensation with just
a single register write.
CGMS Support
The CX25874 and CX25875 support the complete CGMS
set of standards. This includes 480i, 480p/525p, 720p/750p
and 1080i/1125i.
Overscan Compensation
The CX25874 and CX25875 support overscan ratios as
low as 0% (truly to the bezel of the TV) and as high as
25% (25% of the screen will be black).
MacrovisionSupport
The CX25875 provides Macrovision 7.1.L1 copy protection
and Macrovision 525/625p specification compliance.
P[11:0]
HSYNC
VSYNC
BLANK
FIELD
SIC
SID
ALTADDR
RESET
SLEEP
XTALIN
XTALOUT
Input
Demux
Timing
Serial
Interface
XTAL
OSC
Color Space
Flicker
Conversion
Filter/Scaler
FIFO
#1
Internal
Reference
Video
Encoder
DAC
Mux
Color Space
Conversion
#2
to internal clocks
Clock
PLL
Generation
10-bit
10-bit
10-bit
10-bit
Bias
Gen
XTL_BFO
CX25874/CX25875 block diagram
FSADJUST
COMP
VREF
DACA
DACB
DACC
DACD
VBIAS
CLK 0
CLK 1
 

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