GENERAL DESCRIPTION
The Chrontel CH7035B is specifically designed for
consumer electronics device and PC markets which
multiple high definition content display formats are
required. With its advanced video encoder, flexible
scaling engine and easy-to-configure audio interface, the
CH7035B satisfies manufactures’ products display
requirements and reduce their costs of development and
time-to-market.
The CH7035B’s 24-bit parallel bus accepts a wide range
of input data formats from the graphic controller. The
built-in video port supports 8/12/16/18/24-bit data
interface as well as 80/86 MPU interface. The video
format conversion module is capable of translating digital
RGB-565, RGB-666, RGB-888 or YCrCb (ITU-R 656,
ITU-R 601) signal to the DVI signal, combining with the
audio stream. The device’s video capture block supports
input display resolution for up to 1366x768 which can be
either interlaced or non-interlaced timing.
The CH7035B has incorporated a high speed SDRAM to
help manufactures design their product to achieve
simultaneous LCD and DVI display. A sophisticated
frame rate conversion technology in the device’s scaler
retrieves LCD data from the SDRAM frame buffer, and
increases the native display resolution up to 1080p DVI
display. Furthermore, the CH7035B provides additional
image manipulation features including image rotation,
which can be implemented through programming internal
registers.
The device supports both SPDIF and 2-channel I²S digital
audio input. Its high fidelity audio decoder engine has
the capability of sampling audio frequency for up to
192k/2ch. The SPIDF supports PCM encoded data and
compressed audio including Dolby Digital and DTS.
The CH7035B has an image enhancement function that
can fine tune brightness, contrast, hue and saturation
down to the pixel-level.
When the HPD signal is asserted, the CH7035B will
automatically generate an interrupt to the processor. A
build-in DDC port can read the EDID data from DVI
monitor through programming. registers by the processor.

FEATURES
 DVI encoder support up to 1080p
 SPDIF audio interface supports either 16-bit or 20-
bit stereo data for up to 192kHz/2ch
 Support 2 channel I2S digital audio input for up to
24-bit data stream (32kHz, 44.1kHz, 48kHz,
88.2kHz, 96kHz, 176.4kHzand 192kHz)
 DDC master for reading EDID
 Hot plug detection for DVI
 On-chip frame buffer supports frame rate conversion
provides the graphic controller the flexibility of
video timing output
 Advanced scaling engine to upsize/downsize input
resolution for DVI display up to 1080p
 Supports 8/12/16/18/24-bit parallel interface input
for either RGB format (RGB-565, RGB-666 or
RGB-888 and etc.) or YCrCb format (ITU-R 656 or
ITU-R 601). 80/86 MPU interface and DE only
mode are also supported.
 Wide range of input resolutions support for up to
1366x768 (i.e. 640x480, 720x480, 720x576,
800x600, 1024x600, 1024x768, 1280x800, and etc.)
 Image display rotation support at 90/180/270 degree
or flipped in horizontal/vertical position
 Pixel clock input frequency support for up to 165
MHz
 IO Supply Voltages from 1.2V to 3.3V and
SPC/SPD Supply Voltages from 1.8V to 3.3V.
 Programmable power management
 Device fully programmable through serial port or
can automatically load firmware from Chrontel Boot
ROM (CH9904)
 Offered in a 88-pin QFN package

APPLICATION
 Mobile Phones / Tablet Devices
 Smartbooks / Ultrabooks
 Digital Cameras
 DVD Players or Recorders
 Portable Media Players