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Lattice公司的HDMI接口板支持基于SERDES的DVI和HDMI接口,數據速率高達1.65Gbps,共享TMDS編碼器和譯碼器,對于DVI和HDMI數據 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. 
圖1.HDMI子板外形圖 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
圖2.HDMI子板方框圖 圖3.安裝在LatticeECP3 視頻協(xié)議板的HDMI子板
圖4.HDMI子板框圖
圖5.HDMI子板電路圖:電源
圖6.HDMI子板電路圖:HDMI輸入端口
圖7.HDMI子板電路圖:HPO,CEC,I2C選擇
圖8.HDMI子板電路圖:HDMI均衡
圖9.HDMI子板電路圖:TMOS交換
圖10.HDMI子板電路圖:HDMI輸出端口
圖11.HDMI子板電路圖:B到B連接和音頻輸入
圖12.HDMI子板電路圖:板附件 詳情請見(jiàn): http://www.latticesemi.com/documents/EB55.pdf |
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