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CH7036A-BFI Schematic ( PDF Datasheet ) - Chrontel

Teilenummer CH7036A-BFI
Beschreibung LVDS to HDMI/VGA/LVDS Converter
Hersteller Chrontel
Logo Chrontel Logo 




Gesamt 8 Seiten
CH7036A-BFI Datasheet, Funktion
Chrontel
CH7036
Brief Datasheet
CH7036 LVDS to HDMI/VGA/LVDS Converter
FEATURES
Single channel 18-bit/24-bit LVDS receiver and
transmitter support display resolution up to
1366x768
HDMI Transmitter are compliant with HDMI 1.4
specification and DVI 1.0 specification
HDMI Tx supports up to 1920x1080@60Hz
Supports VGA display up to 1080p
DDC master for reading EDID
Supports Hot Plug Detection (HPD) for
HDMI/DVI
Optional HDCP specification version 1.4 function
Three 10-bit high speed DACs
DACs can be switched off through programming
internal registers. A separated composite sync is
supported
Monitor connection detection capability.
Connection status can be retrieved through
device’s internal registers
Pixel-level color enhancement for brightness and
contrast (analog RGB only)
SPDIF audio interface supports up to 20-bit data
stream 192kHz/2ch
Supports I2S digital audio input up to 24-bit data
stream (32kHz/2ch, 44.1kHz/2ch, 48kHz/2ch,
88.2kHz/2ch, 96kHz/2ch, 176.4kHz/2ch and
192kHz/2ch)
On-chip frame buffer allows flexible input LVDS
video timing.
Capable of converting input video frame rate to
satisfy external displays’ refresh rate requirements
Advanced scaling engine to upsize/downsize
display resolution for HDMI, DVI and analog RGB
outputs
Programmable adaptive de-flickering filter
Image display rotation supports for HDMI/DVI and
analog RGB outputs. The screen display can be
rotated 90/180/270 degree or flipped either
horizontally or vertically
Horizontal/vertical position shifting for the VGA
display is programmable
Flexible crystal or oscillator clock input frequency
for analog RGB output (2.3MHz 64MHz). 27
MHz external crystal is recommended for HDMI
output.
IO and SPC/SPD supply voltages from 1.8V to
3.3V
Programmable power management
GENERAL DESCRIPTION
The CH7036 is specifically designed for Consumer
Electronics Devices and Personal Computers that require
High Definition (HD) Content video playback on the
external displays such as HDMI/DVI monitors.
The CH7036’s HDMI transmitter is designed to support
1080p HDTV. For desktop monitors that do not have the
HDMI input, the CH7036 has the capability to disable
HDMI mode and output DVI signal or analog RGB
signal (VGA). To support multi-display, the CH7036 can
output either HDM/DVI or Analog RGB signals together
with LVDS signal pass-through.
The CH7036’s single channel LVDS receiver/transmitter
complies with the SPWG specification, a popular LVDS
standard used by panel manufacturers. Each input/output
LVDS interface is equipped with 4/1 pairs of differential
signal buses to support video data and clock. The built-
in dithering mechanism can be applied to approximate
true 24-bit color video data if system manufacturers use
less expensive 18-bit panels. Conversely, if input data is
only 18-bit color, the simulation to 24-bit color for high-
end TFT LCD is also supported.
The device’s LVDS receiver can accept maximum video
clock frequency for up to 85MHz or 1366x768 resolution
in 24-bit color per pixel. A powerful scaling engine
working together with other video processing circuits,
will convert the captured LVDS signal stored in the
internal SDRAM into High Definition Content video
data. The built-in mixer will combine this HD digital
RGB signal with decoded audio stream into HDMI
format data, which will be serialized for output display
by the CH7036 TMDS encoder.
The CH7036 supports both SPDIF and 2-channel I2S
digital audio inputs. Its high fidelity audio decoder
engine has the capability of sampling audio frequencies
for up to 192kHz for 2 channels.
Utilizing its high speed internal frame buffer, the
CH7036’s scaling engine can increase the flexibility of
the screen display. The video enhancement includes
resizing the HDMI/DVI and RGB output display
resolution, performing Frame Rate Conversion a well as
rotating display orientation. Other video fine tuning, such
as brightness control or contrast adjustment can be used
to improve the display on the analog RGB monitor.
When CH7036 is powered up, its MCU is able to
automatically execute the device configuration software
209-1000-011 Rev. 1.35 11/28/2013
1






CH7036A-BFI Datasheet, Funktion
CHRONTEL
CH7036
22 Ground VSSR
LVDS Input Ground
45 Ground VSST
LVDS Output Ground
50,82 Ground AGND
Analog Ground
55,63 Ground GNDMQ
SDRAM Buffer Ground
71,75 Ground AGND_DAC
DAC Ground
Thermal Ground
Connect to ground plane through thermal via
Exposed
Pad
Notes:
1. Default 3.3V CMOS level output.
2. If DDC is not used, both pins DDC_SC/DDC_SD should be connected to ground by 10kΩ resistor.
6 209-1000-011 Rev. 1.35 11/28/2013

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