24解VGA CVBS的IC
需积分: 0 195 浏览量
2015-01-02
17:01:13
上传
评论
收藏 266KB PDF 举报
CH7025/CH7026
Brief Datasheet
209-1000-004 Rev. 1.1, 12/3/2008 1
Chronte
l
CH7025/CH7026 TV/VGA Encoder
Features General Description
• TV encoder targets the handheld devices and other appropriate
display devices used in consumer products. (i.e. automobile)
• Support multiple output formats. Such as SDTV format (NTSC
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
generation).
• Three on-chip 10-bit high speed DACs providing flexible
output capabilities. Such as single, double or triple CVBS
outputs, YPbPr output, RGB output and simultaneous CVBS
and S-video outputs.
• 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
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.)
• Macrovision
TM
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.
The CH7025/CH7026 is a device targeting
handheld and similar systems which accept digital
input signal, and encodes and transmits data
through 10-bit DACs. The device is able to encode
the video signals and generate synchronization
signals SDTV format for NTSC and PAL
standards and HDTV format for 480p,576p,720p
and 1080i. Analog RGB output and composite
SYNC signal are also supported. The device
accepts different data formats including RGB and
YCbCr (e.g. RGB565, RGB666, RGB888, ITU656
like YCbCr, etc.). 16Mbit SDRAM is embedded in
package. Frame rate conversion and Image rotation
are possible.
Note: the above feature list is subject to change without notice. Please contact Chrontel for more information
and current updates.
剩余10页未读，继续阅读
评论0
最新资源