1. 一般的描述

LT8618EX是Lontium基于cleardedge?技術的低功耗HDMI發射器。它支持24位色深HDMI 1.4(高清晰度多媒體接口)規范。它們與Lontium的第一代HDMI發射機LT8618完全向后兼容，并且與SilICon Image SiI9030和analogx ANX9030發射機的引腳兼容。LT8618EX是一款高性能、低功耗的器件，專為高清數碼相機、高清數碼攝像機、高清pmp /MP4播放器、手機等而設計。正常工作功率小于100mA播放24bit 1080P內容，待機功率小于2mA。

2. 特性

?HDMI 1.4兼容的HDCP發射機

?支持高于340Mpix/秒的像素率

?支持一位音頻(DSD, SACD)

?1080P時的低功耗為180mW

?待機功率小于2mA

?引腳兼容SiI9030,ANX9030和CAT6612

?固件可編程輸出擺動和預強調

?完全硬件控制或可選軟件控制的HDCP操作

?預編程的HDCP密鑰集或外部EEPROM存儲密鑰集

?集成CEC控制器

集成EDID陰影RAM和嵌入式EDID

?5v容錯DDC接口

?靈活的視頻接口支持DVD和高清MPEG解碼器

?24位RGB/YCbCr 4:4:4

?16/20/24位YCbCr 4:2:2

?8/10/12位YCbCr 4:2:2 (ITU.601和656)

?12位，雙邊緣時鐘輸入模式

?ycbcr - rgb色彩空間轉換

?輸入時鐘分頻器(0.5x, 2x, 4x)

?高端數字音頻接口

?4 x I2S輸入接受杜比數字，dvd音頻輸入(2-ch)。192khz, 8ch。192千赫)

?S/PDIF輸入支持PCM，杜比數字，DTS數字音頻傳輸(32-96 kHz Fs采樣率)

?IEC60958或IEC61937兼容。

?靈活，可編程的I2S通道映射

?2:1和4:1降采樣處理96khz和192khz音頻流

?完全集成的HDCP認證硬件

?主I2C接口用于DDC連接，簡化了板布局，降低了成本

?靈活的電源管理

3.應用程序

?DVD、雙相障礙

?IPTV盒

?車載錄像機

?高清資源

1. General Description

The LT8618EX is Lontium’s low power version HDMI transmitter based on ClearedEdge? technology. It supports the 24-bit color depth HDMI 1.4 (High Definition Multimedia Interface) specification. They are fully backwoard compatible with Lontium’s first generation HDMI transmitter LT8618, and al so pin compatible with Silicon Image SiI9030 and Analogix ANX9030 transmitters. LT8618EX is a high performance, low power part that are specifically designed for HD-Digital cameras, HD-Digital Video Cameras, HD-PMP/MP4 Players, Cell phones, etc. The normal operation power is less than 100mA playing 24bit 1080P content, and the standby power is less than 2mA.

2. Features

? HDMI 1.4 compliant transmitter with HDCP
? Support pixel rates above 340Mpix/second
? Support One Bit Audio (DSD, SACD)
? Low power consumption of 180mW at 1080P
? Less than 2mA standby power
? Pin compatible with SiI9030，ANX9030 and CAT6612
? Firmware programmable output swing and pre-emphasis
? Fully hardware-controlLED or optional software-controlled HDCP operations
? Pre-programmed HDCP key sets or external EEPROM stored key sets
? Integrated CEC controller
? Integrated EDID shadow RAM and embedded EDID
? 5V-tolerant DDC interfaces
? Flexible video interface supports DVD and HD MPEG decoders
? 24-bit RGB/YCbCr 4:4:4
? 16/20/24-bit YCbCr 4:2:2
? 8/10/12-bit YCbCr 4:2:2 (ITU.601 and 656)
? 12-bit, dual-edge clocking input modes
? YCbCr-to-RGB color space conversion
? Input clock divider (0.5x, 2x, 4x )
?  High-End digital audio interface
? 4 x I2S inputs accept Dolby Digital, DVD-Audio input (2-ch. 192 kHz, 8-ch. 192 kHz)
? S/PDIF input supports PCM, Dolby Digital, DTS digital audio transmission (32-96 kHz Fs sample rate)
? IEC60958 or IEC61937 compatible.
? Flexible, programmable I2S channel mapping
? 2:1 and 4:1 Down-sampling to handle 96 kHz and 192 kHz audio streams
? Fully integrated HDCP authentication hardware
? Master I2C interface for DDC connection simplifies board layout and lowers cost
? Flexible power management

3. APPLICATIONS

? DVD,BD
? IPTV Box
? Car Video Recorder
? HD Sources

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