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MAX4455单片机性能特征描述及解密

来源:芯片解密-龙芯世纪   时间:2011-04-07   阅读:872

   为适应众多客户的具体解密需求,龙芯世纪针对芯片解密进行攻关项目,目前,我们已经成功突破全系列IC解密技术,不仅成功开发出成熟可靠的优质解密方案,而且在解密周期与成本控制技术上有了很大提高,可以为客户提供极具可靠性和经济价值的优质解密服务。

   随着芯片解密研究中的不断进展,龙芯世纪的解密技术不断成熟,解密方案更为可靠,能够为客户提供最值得信赖的技术支持。下面我们就MAX4455芯片解密为例,针对MAX4455芯片的主要性能特征进行分析介绍,供广大客户及其他技术工程师参考借鉴。
 The MAX4455 is an eight-channel arbitrary graphics on-screen display (OSD) video generator that inserts arbitrary gray-scale bit-mapped graphics into eight asynchronous composite video sources. Ideal for security camera surveillance systems, the MAX4455 supports the insertion of graphics and text on up to eight video output channels in 15 levels of brightness. It easily displays information such as company logo, camera location, time, and date with arbitrary fonts and sizes. Arbitrary graphics capability enables the display of unique languages and fonts, allowing manufacturers to tailor their system for any geographic market. The MAX4455 is designed to work with Maxim's video crosspoint switches, such as the MAX4356 and MAX4358, which include circuitry that simplifies the insertion of the OSD information. The MAX4455 can also be used with discrete fast mux switches.
 The MAX4455 operates from a 3V to 3.6V digital supply, and a 2.7V to 5.5V analog supply. Independent interface supplies enable the MAX4455 to communicate with microprocessors and OSD crosspoint switch logic with logic levels ranging from 2.7V to 5.5V. The MAX4455 uses an external 16Mb SDRAM for graphical image storage for all eight video channels. The MAX4455 manages all memory interface functions, allowing a simple host ?P interface. The MAX4455's multiple-channel memory sharing and multiple-location write function allow fast memory updates of shared graphics information necessary for rapidly changing OSD information, such as a time stamp.
 The MAX4455 is available in a thin 100-pin TQFP package (200mm2 area), and is fully specified over the extended temperature range (-40°C to +85°C). The MAX4455EVSYS is available to evaluate the MAX4455 along with the MAX4358 (32 x 16 video crosspoint switch with OSD).

 以上我们仅针对MAX4455单片机的主要性能特征进行了简单介绍,供大家参考借鉴,如果有MAX4455芯片解密需求,欢迎与龙芯世纪商务中心联系。
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