原标题：NS SDALTEVK用于Altera Cyclone III三速SDI和视频时钟方案

　　NS公司的SDALTEVK是三速SDI和视频时钟子板卡,专门用于Altera Cyclone III FPGA的开发套件.SDALTEVK子板卡通过高速子板连接器(HSMC)直接插到Cyclone III开发板, 为广播视频系统设计师提供了完整平台,能块速评估和出设计原型,从而降低产品面市时间.本文介绍了SDALTEVK子板卡的主要特性和优势, SDALTEVK和Altera Cyclone III主开发板的连接框图以及SDALTEVK子板卡的电路图与材料清单(BOM).

　　Triple-rate SDI & video clocking daughter card for Altera Cyclone III FPGAs National Semiconductor in collaboration with Altera has developed a triple-rate SDI and video clocking daughter card for the Altera Cyclone III FPGA development kit (sold separately by Altera). The daughter card plugs directly into the Cyclone III development board through a High-Speed Mezzanine Connector (HSMC). The combined solution of the daughter card provides broadcast video system designers a comprehensive platform for rapid evaluation and prototyping of new designs to reduce time to market.

　　The SDALTEVK kit consists of:

　　National Semiconductors HSMC SDI video and clocking daughter card (SDALTEVK)

　　Comprehensive user manual, schematics, and bill of materials (BOM)

　　FPGA IP (not included in box)

　　图1. SDALTEVK外形图

　　SDALTEVK Hardware Description

　　The SDALTEVK daughter card contains:

　　LMH0344 Triple-rate SDI Adaptive Cable Equalizer

　　LMH0340 Triple-rate SDI Serializer with integrated cable driver

　　LMH0341 Triple-rate SDI deserializer with reclocked loop through

　　LMH1981 Multi-Format Video Sync Separator

　　LMH1982 Multi-Rate Video Clock Generator

　　DS90CP22 2x2 LVDS Crosspoint Switch

　　LP3878 Adjustable Low Noise LDO

　　LM20242 PowerWise Buck Regulator

　　图2.SDALTEVK和Altera Cyclone III主开发板连接框图

　　　　　SDALTEVK子板卡材料清单(BOM)见Excel表.