Kuntai ch7511b scheme design | ch7511b design EDP to LVDS data | pin to pin replaces ch7511b circuit design

                                      Quintiles CH7511B The project design |CH7511B Design EDP turn LVDS Information |pin to pin replace CH7511B Circuit design

     

     Chrontel Of CH7511B It's a low cost 、 Low power semiconductor devices , It will be embedded DisplayPort The signal is converted to LVDS（ Low pressure differential signal ）. This innovative DisplayPort The receiver has an integrated circuit LVDS Transmitter , Designed for multi-functional integration PC And laptop market . adopt CH7511B Advanced decoding / Coding algorithm , Input eDP High speed serial video data can be seamlessly converted into LVDS,LVDS It is a popular Chinese / large LCD Display high-speed serial link display technology . utilize eDP Unique source / Remit “ Link training ” Program , When CH7511B When the initialization process between and the graphics chip is completed ,CH7511B Can immediately report to LCD Show video .CH7511B The design conforms to the embedded system DisplayPort standard 1.2 edition . In the receiving module of the device , It supports two eDP Main link input , Data rate is 1.62Gb/s or 2.7Gb/s, Acceptable 18 position 6:6:6 or 24 position 8:8:8 Of RGB Digital format , For up to 1920x1200 Of LVDS Output . In order to meet GPU New energy-saving plan , For example, reduce the display frame rate ,CH7511B Equipped with dynamic refresh rate switching method , It can be automatically lowered to LVDS The low refresh rate supported by the panel . Integrate LVDS The transmitter supports single port and dual port LVDS Output , To drive up to WUXGA（1920x1200） The display resolution of .CH7511B Supported by GPIO[0:3] The pin controls or writes to the chip register to select the panel . In order to reduce the EMI launch ,CH7511B Of LVDS The encoder block adopts spread spectrum control , Its spread spectrum percentage can be adjusted through internal registers .

    CH7511B Parameter properties ：

Support embedded DisplayPort（eDP） standard 1.2 edition .

Support 2 The main chain , The link rate is 1.62Gb/s or 2.7Gb/s, Suitable for laptop applications

Support to input color depth 6, Each pixel 8 Bit RGB Format

Support enhanced frame mode

Support VESA and CEA Timing standard , Resolution up to 1920x1200,8 An input , The refresh rate is 60Hz

Support dynamic refresh rate switching

Support Gamma correction

Panel tuning methods include jitter and 6 position +FRC

The embedded DisplayPort Fast full link training of the system

Support eDP authentication ： Optional scrambling seed reset and optional framing

2 Working mode ： Connect 27MHz Crystal , Inject 27MHz The clock

Programmable LCD panel power sequence

Support 18 Bit single port 、18 Bit dual port 、24 Bit single port and 24 Bit dual port LVDS Output interface

Support LVDS Application's OpenLDI and SPWG Bit mapping

Support panel selection by GPIO The pin controls or writes to the chip register .

agile LVDS Output pin exchange

Blank panel when invalid input

Support PWM. The backlight brightness is controlled through the auxiliary channel ,PWM Pins and BLUP/BLDN The pin supports dynamic backlight control

BLUP/BLDN Support when the pin controls the backlight brightness OSD Show

Hot swap detection

Boot is loaded automatically when starting up ROM

Serial boot ROM Data is passed through I2C Bus or auxiliary channel update

Programmable power management

eDP Input and LVDS Output EMI Reduce capacity . Spread spectrum control can be used for transmission LVDS The signal

QFN68 encapsulation

CH7511B Package pin ：

 CH7511B Design EP turn LVDS Block diagram of scheme structure ：

     Capstone The new CS5211 It can be completely compatible and replace CH7511.CS5211 It's a eDP To LVDS converter , Flexible configuration , Suitable for low cost display system .CS5211 And eDP 1.2 compatible , Support 1 Channels and 2 Channel mode , The speed of each channel is 1.62Gbps and 2.7Gbps.CS5211 Use powerful SerDes Technology

Technique , It can recover high speed serial data with low bit error rate .CS5211 LVDS The transmitter supports single port and dual port modes .CS5211 The maximum resolution supported is WUXGA（1920x1200）.CS5211 Yes 4 Configuration pins , Can support 16 A different combination EEPROM Panel resolution and resolution of the image LVDS Working mode . Besides ,

It also provides a simple tool to edit 、 Generate and update EEPROM Images for custom configuration . By optimizing the design , Use CS5211 It's good for saving BoM cost . The chip integrated clock source , The external crystal is saved , Support a wide range of power supply （ The core power is 1.8~1.2V）, Save on-board power equipment ,CS5211 The total power of is less than

300mW, Simplify the design of power supply network . It's easy to put CS5211 Integrated into popular low cost display systems .

CS5211 The parameter characteristics are as follows ：

2 passageway DisplayPort v1.1 Compatible receiver

Support 18 Bit single port 、18 Bit dual port 、24 Bit single port and 24 Bit dual port LVDS Output

Support LVDS Application's OpenLDI and SPWG Bit mapping

Built in oscillator , No external crystals are needed

Embedded linear pressure drop regulator （LDO）

On film MCU

adopt GPIO Pin control selection support panel

Boot automatically after boot ROM

adopt I2C Bus or auxiliary channel update serial boot ROM data

Automatic chip power mode control

eDP and LVD Of EMI Reduce

Wide core power range from 1.8V To 1.2V

QFN68 encapsulation

HBM 4KV

CS5211 replace CH7511B Design DP turn LVDS The scheme design reference circuit is as follows ：