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Chrontel - TV/VGA Encoder

Numéro de référence CH7025
Description TV/VGA Encoder
Fabricant Chrontel 
Logo Chrontel 





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CH7025 fiche technique
Chrontel
CH7025/CH7026
Brief Datasheet
CH7025/CH7026 TV/VGA Encoder
Features
General Description
TV encoder targets the handheld devices and other appropriate The CH7025/CH7026 is a device targeting
display devices used in consumer products. (i.e. automobile) handheld and similar systems which accept digital
Support multiple output formats. Such as SDTV format (NTSC input signal, and encodes and transmits data
and PAL), HDTV format for 480p,576p,720p and 1080i,
analog RGB output for VGA. Sync signals can be provided in
separated or composite manner (programmable composite sync
through 10-bit DACs. The device is able to encode
the video signals and generate synchronization
generation).
signals SDTV format for NTSC and PAL
Three on-chip 10-bit high speed DACs providing flexible standards and HDTV format for 480p,576p,720p
output capabilities. Such as single, double or triple CVBS and 1080i. Analog RGB output and composite
outputs, YPbPr output, RGB output and simultaneous CVBS SYNC signal are also supported. The device
and S-video outputs.
accepts different data formats including RGB and
16Mbits SDRAM is used as frame buffer. Supporting for frame
rate conversion.
Flexible up and down scaling engine is embedded including de-
flickering capability.
Programmable 24-bit/18-bit/16-bit/15-bit/12-bit/8-bit digital
YCbCr (e.g. RGB565, RGB666, RGB888, ITU656
like YCbCr, etc.). 16Mbit SDRAM is embedded in
package. Frame rate conversion and Image rotation
are possible.
input interface supports various RGB (RGB888, RGB666,
RGB565 and etc), YCbCr (4:4:4 YCbCr, ITU656) and 2x or 3x
multiplexed input. CPU interface are also supported.
Support for flexible input resolution up to 800x800 and
1024x680.
Pixel by pixel brightness, contrast, hue and saturation
adjustment for each kind of output is supported. (For RGB
output, only brightness and contrast adjustment is supported).
Pixel by pixel horizontal position adjustment and line by line
vertical position adjustment are supported.
90/180/270 degree image rotation and vertical or horizontal flip
functions are supported.
Macrovision 7.1.L1 for SDTV is supported in CH7025.
(CH7026 is Non-Macrovision part.)
MacrovisionTM copy protection support for progressive scan
TV (480p, 576p CH7025 only)
CGMS-A support for SDTV and HDTV
TV/Monitor connection detect capability. DAC can be switched
off based on detection result. (Driver support is required)
Programmable power management.
Flexible pixel clock frequency from graphics controller is
supported. (2.3MHz –120MHz) Flexible input clock from
crystal or oscillator is supported. (2.3MHz – 64MHz)
Only slave mode supported.
Offered in BGA or QFP package.
Fully programmable through serial port.
IO and SPC/SPD voltage supported is from 1.2V to 3.3V.
Note: the above feature list is subject to change without notice. Please contact Chrontel for more information
and current updates.
209-1000-004 Rev. 1.1, 12/3/2008
1

PagesPages 11
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