MCF5282的I2C总线在uClinux操作系统下的驱动程序设计

介绍了Freescale公司嵌入式微处理器MCF5282的原理、特点,给出了该处理器在嵌入式操作系统uClinux下通过I2C硬件扩展数字输入的原理,以及I2C总线的驱动程序设计流程.     

CAN总线在细纱机控制系统中的应用

分析了CAN总线在细纱机控制系统中的可行性,介绍了基于ColdFire MCF52235的细纱机控制系统的构成和PLC编程,并给出了单锭CAN节点的软件设计方案。     

U-Boot和Linux在Coldfire处理器MCF54452上的移植

设计了一款以MCF5442为主处理器的通用平台,在M5445EVB开发包的基础上调整了系统时钟、存储器系统、FEC、USB和外设部分的配置参数并修正了部分代码,成功地把U—Boot移植到目标板,在此基础上进一步移植Linux。系统在Linux下开发,并通过m68k-linux—gnu—gcc编译连接,利用Codewarrior完成U-Boot的代码烧写和早期调试。通过tftp下载等方法验证了U—Boot,随后通过Web浏览、文件系统操作、USB鼠标等方法证实了Linux系统能够在目标系统稳定运行。     

基于MCF52223USB数据采集系统的实时性研究

详细分析了基于USB传输的数据采集系统的实时特性。针对实时工业控制环境,研究了采用32位微处理器MCF52223进行AD采集,并通过USB总线通信方式向PC机传送AD数据的多路数据采集系统的实时特性,并从软件滤波、数据传输等方面提出了提高系统实时性的有效方法,最后较为具体地给出了MCU方和PC方的编程方法。     

Differentially expressed proteins of MCF-7 human breast cancer cells affected by Zilongjin, a complementary Chinese herbal medicine

Purpose : Zilongjin, a complementary Chinese herbal medicine, has been used to alleviate the adverse effects of chemotherapeutic drugs in cancer therapy. However, the mechanisms of anti‐cancer activity of Zilongjin are still largely unkonwn. Experimental design : First, the proteomic approach of combined 2‐DE and ESI‐MS/MS was used to investigate the effect of Zilongjin on the protein expression in MCF‐7 cells. Then, the differential expression of some proteins was confirmed by Western blot, cytoimmunofluoresecnce, and quantitative real‐time RT‐PCR analysis. Results : The identified proteins with differential expression, involved in such events as protein translation, cellular signal transduction, cytoskeleton formation and transportation, include seven downregulating proteins, such as Eukaryotic translation initiation factor 3 subunit I, Eukaryotic translation initiation factor 1A Y‐chromosomal, Ran‐specific GTPase‐activating protein, Ubiquitin‐conjugating enzyme E2 N, Tropomodulin‐3, Macrophage‐capping protein, and Tumor protein D52, as well as two upregulating proteins, HSP β‐1 and keratin18. Moreover, the differential expression of three proteins was confirmed. Conclusions and clinical relevance : (i) These results provide a new insight into the molecular mechanisms of Zilongjin on therapy for breast cancer. (ii) The application of the proteomic approaches will result in the more extended appreciation of Chinese medicine than those known at present.     

SSI接口技术及其在音频处理中的应用

Synchronous Serial Interface（SSI）是一种可应用于数据发送和接收的全双工串行接口,广泛应用于各种串行设备的通信。本文分析了SSI的工作原理,并通过与音频编解码芯片TLV320DAC23的通信实例,阐述了它在音频处理中的应用。     

基于MCF5307-uClinux的嵌入式监控服务器设计

介绍了一种对工业现场PLC进行监控的嵌入式服务器的设计方法以及以MCF5307为核心的嵌入式服务器的硬件结构、Bootloader工作原理及开发和在uClinux下JFFS文件系统的移植，比较了系统镜像文件的烧写方法，概述了服务器监控服务程序的设计方法及设计思想。     

MCF5282在电力系统监控中的应用

详细介绍Motorola公司的嵌入式微处理器MCF5282的结构特点，同时设计一种基于MCF5282的嵌入式系统方案。该方案涉及以太网通信、CAN、RS-485、RS-232等多种通信方式，使得它具有智能化、高可靠性、易维护、运行和操作方便等众多优点，可以作为线路保护、母线保护、变压器保护和发电机保护等多种保护类型的微机保护装置，其保护电压等级可以达到110kV。     

基于MCF51EM256低压保护测控装置的研发

在分析低压配电监控需求的基础上,提出了基于MCF51EM256单芯片SOC的解决方案,该方案利用其片内高精度16位ADC和高速32位COLDFIRE-V1核较好地实现了保护、测量、控制、管理和通讯功能,从而经济高效地满足了低压测控装置的完整需求,具有较高的参考价值.     

Evaluation of the antioxidant and antiproliferative activities of extracted saponins and flavonols from germinated black beans (Phaseolus vulgaris L.)

Flavonoids and saponins from common beans have been widely studied due to their bioactivity. This research evaluated the effect of germination of black beans (Phaseolus vulgaris L.) on the antioxidant capacity and antiproliferative activity against cancer cell lines of saponins and flavonoids extracted from seed coats, cotyledons and sprouts. Principal component analysis was performed to achieve punctual associations between the black bean saponins and flavonoids concentrations to the antioxidant capacity and the antiproliferative activities. Total phenolic content and antioxidant capacity of extracts were higher when obtained from seed coats, mainly from the 3rd germination day. The extracts obtained from seed coats after 3 and 5 germination days inhibited all cancer cell lines proliferation with no cytotoxicity against control cells. Genistein was related with the activity against mammary cancer cells but flavonols and group B saponins were more related with hepatic and colon cancers. Non-glycosilated flavonols were related with antioxidant capacity.