1.概述

 
LT8668EX是Lontium的第二代LCD控制器，支持VGA接口和基于ClearedEdge?技術(shù)的HDMI接口，符合HDMI 1.4（高清晰度多媒體接口）規(guī)范。它還可以支持帶有HDMI接口的雙模式DP和MHL。為了向后兼容，此LCD控制器還包括一個高性能模擬接口，可與傳統(tǒng)的VGA / YPbPr接口配合使用。利用四路LVDS端口，它可以支持4Kx2K分辨率的四路LVDS端口監(jiān)視器。和雙LVDS prots或單LVDS端口為其他分辨率。對于LCD控制器的整體解決方案，LT8668EX集成了主要功能包括位置調(diào)整，可編程標(biāo)量，視頻處理器（色調(diào)，飽和度，亮度和對比度調(diào)整），OSD，伽馬校正，PWM，MCU，總共16個GPIO和非閃存。為了便于實(shí)現(xiàn)多媒體系統(tǒng)，LT8668EX具有支持2聲道音頻和spdif音頻格式的高質(zhì)量數(shù)字音頻輸入和輸出接口。 LT8668EX在其中集成了4M位的nor-flash，并且還可以通過SPI接口使用外部的nor-flash來實(shí)現(xiàn)兼容性。
LT8668EX采用128引腳LQFP封裝，工作溫度范圍為-10℃-70℃。
 
2.特點(diǎn)
 

?直接接口到DVI 1.0和HDMI V1.4接收器

?符合DVI高達(dá)1.65Gbps和HDMI V1.4高達(dá)3.0Gbps

?在具有HDMI的相同引腳上支持雙模式DP

?在HDMI的相同引腳上支持MHL

?多像素格式：RGB 6/8/10/12位每個分量（bpc）; YCbCr 422/444 8/10/12 bpc

?高輸入靈敏度，差分輸入電平低至80mV

?接收器側(cè)均衡高達(dá)12 dB

?自動丟失信號檢測

?高抖動容限高達(dá)0.7UI

?HDCP解密

?片上VGA / HDMI EDID

?支持高達(dá)4Kx2K @ 30Hz的分辨率

?Qual通道LVDS輸出，支持18/24/48位LCD面板

?RGB888 / RGB666 / RGB565輸出

?可編程數(shù)字PWM，用于背光控制

?完全可編程的標(biāo)量比和獨(dú)立的水平/垂直縮放

?可編程的色調(diào)，亮度，飽和度和對比度調(diào)整

?支持伽瑪校正和抖動

?嵌入式OSD

?集成的微控制器，用于系統(tǒng)級管理

?支持ISP編程

?外部IIC UART和SPI接口

?支持I2S / SPDIF音頻輸入和輸出

?音頻左右聲道音頻PWM輸出

?廣泛的電源管理，實(shí)現(xiàn)省電

?支持總共16個GPIO

?集成模式生成

?集成非閃存（選件）

 
3.應(yīng)用

 

?高清液晶電腦顯示器

?用于醫(yī)療和其他應(yīng)用的高清液晶顯示器

?多媒體處理和顯示控制

1. General Description

The LT8668EX is Lontium’s second generation LCD controller that supports both VGA interface and the HDMI interface based on ClearEdge? Technology, compliant with the HDMI 1.4(High Definition Multimedia Interface) specification. It can support Dual-Mode DP with HDMI interface. For backward compatibility, this LCD controller also includes a high performance analog interface to work with traditional VGA/YPbPr interface. With quad-LVDS ports it can support quad-LVDS ports monitor with 4Kx2K resolution. And dual-LVDS ports or single-LVDS port for other resolution. For total solution of LCD controller, LT8668EX integrates main functions including position adjustment, programmable scalar, video processor (hue, saturation, brightness and contrast adjustment), OSD, gamma correction, PWM, MCU, total 16 GPIOs and nor-flash(option). For easy implementation of a multi-media system, LT8668EX has high quality digital audio input and output interface that support 2-channel audio and SPDIF audio format. LT8668EX integrates 4M bits nor-flash inside, and also you can use external nor-flash by SPI interface for compatibility.

2. Features

? Direct interface to DVI 1.0 and HDMI V1.4 receiver

? Compliance with DVI up to 1.65Gbps and HDMI V1.4 up to 3.0Gbps

? Support Dual-Mode DP on the same pins with HDMI

? Multiple pixel formats: RGB 6/8/10/12 bit per component (bpc); YCbCr 422/444 8/10/12 bpc 

? High input sensitivity, with differential input level down to 80mV

? Receiver side equalization up to 12 dB

? Auto Loss of Signal detection

? High jitter tolerance up to 0.7UI

? HDCP decryption 

? On-chip VGA/HDMI EDID 

? Support resolution up to 4Kx2K@30Hz

? Qual channels LVDS outputs, Support 18/24/48-bit LCD panels

? RGB888/RGB666/RGB565 output

? Programmable digital PWM for backlight control

? Fully programmable scalar ratios and independent horizontal/vertical scaling

? Programmable hue, brightness, saturation and contrast adjustment

? Support Gamma correction and dithering

? Embedded OSD 

? Integrated microcontroller for system level management

? Support ISP programming

? External IIC UART and SPI interface

? Support  I2S/SPDIF audio input and output

? Audio left and right channel audio PWM outputs

? Extensive power management for power savings

? Support total 16 GPIOs

? Integrated pattern generation

? Integrated nor-flash(option)

3.  Applications

? HD LCD computer Monitors

? HD LCD Monitors for medical and other applications

? Multi-Media process and display control

? HDMI//VGA to LVDS/TTL Interface convertion

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