说明：  Hi3521是针对多路D1和多路高清DVR、NVR产品应用开发的一款专业高端SOC 芯片。Hi3521内置高性能A9处理器、高达8路D1实时多协议编解码能力的引擎和专用TOE 网络加速模块，应对越来越高的高清应用和网络需求；集成优异的视频引擎和编解码算法并结合多路高清显示输出能力，充分满足客户产品的高质量图像体验。Hi3521高度集成和丰富的外围接口，在满足客户差异化产品功能、性能、图像质量要求的同时，大大降低ebom成本。
(Hi3521 is a professional high-end application development for the multiple D1 and multi-channel high-definition DVR, NVR SOC chip.Hi3521 built-in high-performance A9 processor, up to 8-channel D1 real-time multi-protocol codec capacity of the engine and dedicated TOE network acceleration module to deal with more and more high-definition application and network requirements integrated the excellent video engine and codec algorithms andthe combination of multiple high-definition display output capacity to fully meet customer s product-quality image experience. The Hi3521 highly integrated and rich peripheral interfaces to meet the customers differentiated product functionality, performance, image quality requirements while greatly reduce ebom cost.)