CSD-4M中文资料

XC-CPU202-EC4M-8DI-6DO-XV has been designed with cybersecurity as an important consideration. A number of features are offered in the product to address cybersecurity risks. These Cybersecurity Recommendations provide information to help users to deploy and maintain the product in a manner that minimizes the cybersecurity risks. These Cybersecurity Recommendations are not intended to provide a comprehensive guide to cybersecurity, but rather to complement customers’ existing cybersecurity programs.Eaton is committed to minimizing the cybersecurity risk in its products and deploying cybersecurity best practices in its products and solutions, making them more secure, reliable, competitive for customers.Eaton recommends conducting a risk assessment to identify and assess reasonably foreseeable internal and external risks to the confidentiality, availability and integrity of the system | device and its environment. This exercise should be conducted in accordance with applicable technical and regulatory frameworks such as IEC 62443 and NERC-CIP. The risk assessment should be repeated periodically.An attacker with unauthorized physical access can cause serious disruption tosystem/device functionality. Additionally, Industrial Control Protocols don’t offer cryptographic protections, making ICS and SCADA communications especially vulnerable to threats to their confidentiality. Physical security is an important layer of defense in such cases. XC-CPU202-EC4M-8DI-6DO-XV is designed to be deployed and operated in a physically secure location. Following are some best practices that Eaton recommends to* Figure and data from NIST SP800-88Embedded Flash Memory on Boards and DevicesEaton recommends the following methods for disposing of motherboards, peripheral cards such as network adapters, or any other adapter containing non-volatile flash memory.[R1] Cybersecurity Considerations for Electrical Distribution Systems (WP152002EN):/ecm/groups/public/@pub/@eaton/@corp/documents/content/pct_1603172.pdf[R2] Cybersecurity Best Practices Checklist Reminder (WP910003EN):/content/dam/public/powersystems/resources/library/1100_EAS/WP910003EN.pdf[R3] NIST SP 800-82 Rev 2, Guide to Industrial Control Systems (ICS) Security, May 2015:https:///nistpubs/SpecialPublications/NIST.SP.800-82r2.pdf[R4] National Institute of Technology (NIST) Interagency “Guidelines on Firewalls and Firewall Policy, NIST Special Publication 800-41”, October 2009: /nistpubs/Legacy/SP/nistspecialpublication800-41r1.pdf。

ISD4004系列单片语音录放电路一、简述●单片8至16分钟语音录放●内置微控制器串行通信接口●3V单电源工作●多段信息处理●工作电流25-30mA,维持电流1μA●不耗电信息保存100年(典型值)●高质量、自然的语音还原技术●10万次录音周期(典型值)●自动静噪功能●片内免调整时钟,可选用外部时钟ISD4004系列工作电压3V,单片录放时间8至16分钟,音质好,适用于移动电话及其他便携式电子产品中。

芯片采用CMOS技术,内含振荡器、防混淆滤波器、平滑滤波器、音频放大器、自动静噪及高密度多电平闪烁存贮陈列。

芯片设计是基于所有操作必须由微控制器控制,操作命令可通过串行通信接口(SPI或Microwire)送入。

芯片采用多电平直接模拟量存储技术, 每个采样值直接存贮在片内闪烁存贮器中,因此能够非常真实、自然地再现语音、音乐、音调和效果声,避免了一般固体录音电路因量化和压缩造成的量化噪声和"金属声"。

采样频率可为4.0,5.3,6.4,8.0kHz,频率越低,录放时间越长,而音质则有所下降,片内信息存于闪烁存贮器中,可在断电情况下保存100年(典型值),反复录音10万次。

二、引脚描述电源:(VCCA,VCCD)为使噪声最小,芯片的模拟和数字电路使用不同的电源总线,并且分别引到外封装的不同管脚上,模拟和数字电源端最好分别走线,尽可能在靠近供电端处相连,而去耦电容应尽量靠近器件。

地线:(VSSA,VSSD)芯片内部的模拟和数字电路也使用不同的地线。

同相模拟输入(ANA IN+)这是录音信号的同相输入端。

输入放大器可用单端或差分驱动。

单端输入时,信号由耦合电容输入,最大幅度为峰峰值32mV,耦合电容和本端的3KΩ电阻输入阻抗决定了芯片频带的低端截止频率。

差分驱动时,信号最大幅度为峰峰值16mV，为ISD33000系列相同。

反相模拟输入(ANA IN-)差分驱动时,这是录音信号的反相输入端。