原标题：Lattice数据速率1.65Gbps的HDMI接口解决方案

　　lattice公司的HDMI接口板支持基于SERDES的DVI和HDMI接口,数据速率高达1.65Gbps,共享TMDS编码器和译码器,对于DVI和HDMI数据

　　HDMI is an industry-supported, all-digital audio/video interface for transmitting both uncompressed digital video and multi-channel audio over a single connector and cable that replaces various cables behind the home entertainment center. HDMI can carry eight channels of 192KHz, 24-bit uncompressed audio, or any flavor of compressed audio format such as Dolby or DTS. HDMI has the capacity to support existing high-definition video formats such as 720p, 1080i, and 1080p. Because HDMI is electrically compatible with the DVI signal, no signal conversion is required, nor is there a loss of video quality when a DVI-to-HDMI adapter is used.

　　HDMI接口板主要特性:

　　SERDES-based DVI and HDMI interface supports data rate up to 1.65Gbps

　　Shared TMDS Encoder and Decoder for both DVI and HDMI data

　　Supports arbitrary HSYNC/VSYNC polarity

　　PCS Embedded Word Alignment and FPGA FIFO-based Channel Alignment

　　Multi-Channel Alignment exceeds the inter-channel skew requirements of DVI and HDMI Specifications

　　Emulated Extended Display Identification Data (EDID) support for DVI

　　The LatticeECP3 Versa Development Kit is the industry’s lowest cost design platform for building leading edge systems in a variety of markets such as industrial networking, industrial automation, computing, medical equipment, defense, and consumer electronics. It brings high-end innovations -- configurable SERDES, cascadable DSP slices, and high-speed DDR3 memory within the reach of mainstream designers in an easy to use environment. The Versa Kit empowers designers to build both PCI Express and Gigabit Ethernet based systems. The Kit offers free design tools, readymade demos, reference designs, a versatile evaluation board, and a serial programming cable. The evaluation board features an LFE3-35EA-8FN484C FPGA device, 64 Mbit SPI Flash, 1Gbit DDR3 memory, expansion headers, several LEDs, and user switches. It contains a PCI Express x1 (Half-length form-factor), two RJ45, and 4 SMA interfaces.

　　图1.HDMI子板外形图

　　HDMI子板主要特性:

　　• Supports two different HDMI/DVI input paths, with or without the cable equalizer

　　• Supports HDMI/DVI output with TMDS level shifter

　　• TOSLINK fiber optic receiving module for S/PDIF audio input

　　• Headers for HPD, CEC controls and the EDID signals

　　• ESD protection devices for both HDMI/DVI inputs and HDMI/DVI outputs

　　图2.HDMI子板方框图

　　图3.安装在LatticeECP3 视频协议板的HDMI子板