登录
首页 » Others » 计算机考研操作系统题库

计算机考研操作系统题库

于 2020-12-08 发布
0 256
下载积分: 1 下载次数: 1

代码说明:

判断题,单项选择题,多项选择题,填空题,名词解释题,综合题

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论

0 个回复

  • 基于FPGA的fir滤波器程序verilog代码
    基于FPGA的fir滤波器程序,verilog代码
    2020-12-12下载
    积分:1
  • Qt调用python解析百度云API实现人脸图像识别
    1,登录界面两个key值为百度云账号注册应用key值;2,此demo为Qt调用Python函数,所以必须先配置环境,把python安装目录下的libs和include配到Qt中的pro文件中;3,py文件需放到exe同文件夹下才可以正确运行;
    2020-11-03下载
    积分:1
  • 88E1116R_Datasheet
    88E1116R_Datasheet,marvell以太网phy芯片手册,全本88E1116RM A RV E LL. Alaska Gigabit Ethernet TransceiverOVERVIEWFEATURESThe Alaska 88E1116R Gigabit Ethernet Transceiver is10/100/1000BASE-TIEEE 802.3 complianta physical layer device containing a single GigabitSupports reduced pin count GMII(RGMID)interfaceEthernet transceiver. The transceiver implements theFour RGMii timing modesEthernet physical layer portion of the 1000BASE-T,100BASE-TX. and 10base-t standards. t is manufacIntegrated mdi interface termination resistors thateliminate twelve passive componentstured using standard digital CMOS process and con-tains all the active circuitry required to implement theEnergy Detect and Energy Detect+ low powerphysical layer functions to transmit and receive data onmodesstandard Cat 5 unshielded twisted pairThree loopback modes for diagnosticsThe 88E1116R device has two regulators to generateDownshift"mode for two-pair cable installationsall required voltages. The 88E1116R device can beFully integrated digital adaptive equalizers, echopowered by a single 1.8V, 2.5V, or 3. 3V supply Alternacancellers, and crosstalk cancellerstively, if the regulators are not used, then the 88E1116RAdvanced digital baseline wander correctiondevice can be powered by a 1. 8v and 1.2V supplyAutomatic MDi/MDIX crossover at all speeds ofThe 88E1116R device incorporates the Marvell@ VirtualoperationCable Tester (VCTTM)feature, which uses TimeAutomatic polarity correctionDomain Reflectometry(TDR)technology for the remotelEEE 802. 3u compliant Auto-Negotiationidentification of potential cable malfunctions, thusSoftware programmable LEd modes including LEDreducing equipment returns and service calls. UsingtestingVCT, the alaska 88E1116R device detects and reportspotential cabling issues such as pair swaps, pair polar-Supports IEEE 1149.1 JTAGity and excessive pair skew. The device will also detectMDC/MDIO Management Interfacecable opens, shorts or any impedance mismatch in theCRC checker, packet countercable and reporting accurately within one meter the disPacket generationtance to the faultVirtual Cable Tester(VCT)The 88E1116R device integrates MDI interface terminaAuto-Calibration for MAc Interface outputstion resistors into the Phy. this resistor integrationComa Mode supportfacilitates board layout and reduces board cost byRequires a single 1.8v supplyreducing the number of extenal components. The new10 pads can be supplied with 1.8V, 2.5V, or 3. 3VMarvell calibrated resistor scheme will achieve andexceed the accuracy requirements of the IEEE 802.3Two regulators generate all required voltagesRegulator can be supplied with 1.8V,2.5V or 3.3Vreturn loss specificationsCommercial gradeThe 88E1116R device supports the reduced gmll64-Pin QFN package(RGMI)for direct connection to a MAC/Switch portThe 88E1116R device uses advanced mixed-signal processing to perform equalization, echo and crosstalkcancellation, data recovery, and error correction at agigabit per second data rate. The device achievesrobust performance in noisy environments with very lowpower dissipationThe 88E 1116R device is offered in a 64-pin QFn pack-The 88E1116R device is footprint compatible with the88E1116 device As the 88E 1116R device employs integrated MDi interface terminations, all external mDIinterface termination resistors and capacitors must beremoved when migrating from the 88E1116 to88E1116R. See 88E1116 to 88E1116R Migration Appli-cation note for more detailsCopyright o 2007 MarvellCONFIDENTIALDoC. No. MV-S104224-00. Rev.March 1. 2007. AdvanceDocument Classification: Proprietary InformationPage 388E1116RMARVELLo Alaska Gigabit Ethernet TransceiverMagnMedia Types10/1001000Mbps88E1116R|a盖10BASEEthernet macRJ-45Device100BASE-TX1000BASE-TMAC InterfaceRGMII88E1116R Device used in Copper ApplicationDoc. No. MV-S104224-00. Rev.CONFIDENTIALCopyright o 2007 MarvellPage 4Document Classification: Proprietary InformationMarch 1. 2007. AdvanceTable of contentsSECTION 1. SIGNAL DESCRIPTION1.1 Pin Description101.1.1 Pin Type Definitions1264 Pin QFN Pin Assignment List- Alphabetical by Signal Name.……,…,,…,161.3 O State at Various Test or reset modes .mmm.,17SECtION 2. FUNCTIONAL SPECIFICATIONS2.1 Copper Media Interface..国面画192.2 MAC Interface(RGMII)4192.2.1 10/100 Mbps Functionality2.2.2 TX ER and RX ER Codingaaaaaiiaia t23Lo。 pback……………,….….….,.,…….…,…,….….……,…….……………212.3.1 MAC Interface Loopback212.3.2 Line Loopback.222.3.3 EXternal Loopback24 Synchronizing F|FQ….…,,…,…,,,,,,…,,,,,…,,,…,,,,…,……242.5 Copper Media Transmit and receive Function.man..m日a252.5.1 Transmit side Network Interface252.5.2 Encoder2.5.3 Receive Side Network Interface2.5. 4 Decoder2.6 Regulators and Power Supplies282.6.1 AVDD2.6.2 AVDDC282.6.3 AVDDR292.6.4 AVDDX2.6.5DVDD…292.6.6 VDDO26.7 VDDOR.292.7 Power Management302.7.1 Low Power Modes2.72 Low Power Operating Modes……2.7.3 RGMl Effect on Low Power modes3228Auto- Negotiation.........……33Copyright o 2007 MarvellCONFIDENTIALDoC. No. MV-S104224-00. Rev.March 1. 2007. AdvanceDocument Classification: Proprietary InformationPage 588E1116RMARVELL Alaska Gigabit Ethernet Transceiver2.9 Downshift Feature…352.10 Advanced virtual Cable Tester362.10.1 Maximum Pe2.10.2 First Peak372.10.3 Offsetp2. 10. 4 Sample Poin2.10.5 Pulse Amplitude and Pulse Width392. 10.6 Drop Link...392.10.7 VCTTM With Link Up392.11 Data Terminal Equipment (DTE)Detect........2.12 CRC Error Counter and frame Counter412.12. 1 Enabling the crc error counter and frame counter.412.13 Packet generator412.14 MDI/MDIX Crossover422.15P。 olarity Correction..…432.16LED,,,,,,,,,,,…,…,,442.16.1 LED Polarity452.16.2 Pulse Stretching and Blinking.462. 16.3 Bi-Color LED Mixing472.16.4 Modes of Operation482.17 EEE 1149.1 Controller522.17.1 BYPASS Instruction522.17.2 SAMPLE/PRELOAD Instruction.52217.3 EXTEST Instruction552,17.4 The clamP Instruction552,17.5 The high-z Instruction552.17.6 ID CODE Instruction552.18 Interrupt.552.19 Automatic and Manual Impedance Calibration.……,…,…,…,…,…,…,……562. 19. MAC Interface calibration circuit562.19.2 MAC Interface Calibration Register Definitions2. 19.3 Changing Auto Calibration Targets2. 19. 4 Manual Settings to The Calibration Registers“““582.20 Configuring the 88E1116R Device..2.20. 1 Hardware Configuration612.20.2 Software Configuration-Management Interface632.21 Temperature sensor64Doc. No. MV-S104224-00. Rev.CONFIDENTIALCopyright o 2007 MarvellDocument Classification: Proprietary InformationMarch 1. 2007. AdvanceSECTION 3 REGISTER DESCRIPTION65SECTION 4, ELECTRICAL SPECIFICATIONS1104.1. Absolute Maximum Ratings,…,…,…,…,,…,…,…,…,…,…,,…,…,……,1104.2. Recommended Operating Conditions..,,.,……,,……1114.3. Package Thermal Information.………….……….…………1124.3.1 Thermal Conditions for 64-pin QFn Package1124. 4. Current Consumption...........面量量…1134.4.1 Current Consumption AVDD..1134.4.2 Current Consumption AVDDC..1134.4.3 Current Consumption AVDDR1144.4.4 Current Consumption AVDDX1144.4.5 Current Consumption DVDD4.4.6 Current Consumption VDDo1154.4.7 Current Consumption VDDOR1154.4.8 Current Consumption Center Tap1154.5. DC Operating Conditions1164.5.1 Non-RGMlI Digital Pins1164.5.2 Internal resistor Description4.5.3 Stub-Series Transceiver LogIc (55/.21174.5 4 EEE DC Transceiver Parameters1194.6. AC Electrical Specifications1204.6.1 Reset Timing ..1204.6.2 XTAL IN/XTAL OUT Timing1214.6.3 LED to CONFIG Timing1214.7 RGMII Interface Timing……,,…1224.7.1 RGMl AC Characteristics4.7.2 RGMII Delay Timing for different RGMiI Modes1234.8. MDC/MDIO Timing…12549. JTAG Timing…,,…1264.10.EEE AC Transceiver parameters1274.11. Latency Timing........….…1284.11.1 RGMII to 1000BASE-T Transmit Latency Timingaa“aa1284.11.2 RGMII to 100BASE-TX Transmit Latency Timing1284.11.3 RGMiI to 10BASE-T Transmit Latency Timing4. 11. 4 1000BASE-T to RGMll Receive Latency Timing1304. 11.5 100BASE-TX to RGMII Receive Latency Timing.1304.11.610 BASE-T to RGMll Receive Latency Timing……….….…………,130SECTION 5. PACKAGE MECHANICAL DIMENSIONS1315.1 64-Pin QFN Package...131Copyright o 2007 MarvellCONFIDENTIALDoC. No. MV-S104224-00. Rev.March 1. 2007. AdvanceDocument Classification: Proprietary InformationPage 788E1116RMARVELL Alaska Gigabit Ethernet TransceiverSECTION 6. ORDER INFORMATION1336.1 Ordering Part Numbers and Package Markings1336.1.1 RoHS 5/6 Marking Example1346.1.2 RoHS 6/6 Marking Example135Doc. No. MV-S104224-00. Rev.CONFIDENTIALCopyright o 2007 MarvellPage 8Document Classification: Proprietary InformationMarch 1. 2007. AdvanceSignal DescriptionSection 1. Signal DescriptionThe 88E1116R device is a 10/100/1000BASE-T Gigabit Ethernet transceiverFigure 1: 88E1116R Device 64-Pin QFN Package(Top view)文gg9廿廿廿廿廿廿凵廿廿廿凵廿守令导好寸守哥导$85#將RX CTRL4932TSTPTRXDIO5031MDIPIORXD[51EPAD-VSS30d MDIN[O]VDDOR52290 AVDDRX CLK5328叫NCRXD[2]54AVDDRXD]5526MD|P[1VDDOR56VREF57MARVEL L③24E MDIP[2TXD0]□5823MDIN[2TXD[1]B5988E1116R22AVDDTX_CLK F6021AVDDTXD[2Top ViewMDIP[3TXD3]□62190 MDIN[3]TⅩCTRL6318□NCCONFIG[O]64CTRL18三s回口cc×O百口口艺艺安安Copyright o 2007 MarvellCONFIDENTIALDoc. No. MV-S104224-00 RevMarch1.2007. AdvanceDocument Classification: Proprietary InformationPage 988E1116RMARVELL. Alaska Gigabit Ethernet Transceiver1.1 Pin Description1.1.1 Pin Type DefinitionsPin Ty peDefinitionHInput with hysteresisVOInput and outputInput onlOutput onlPUIntemal pullPDInternal pull downOpen drain outputTri-state outputADC sink capabilityDoC. No. MV-S104224-00 RevCONFIDENTIALCopyright o 2007 MarvellPage 10Document Classification: Proprietary InformationMarch.2007. Advance
    2020-12-03下载
    积分:1
  • STM32 SX1278测试程序带原理图(看评论酌情下载)
    STM32 SX1278测试程序带原理图
    2020-12-06下载
    积分:1
  • Java Jdk1.8最终版(jdk-8u231-windows-x64.exe)含MD5工具
    【实例简介】Oracle官网下载的JDK,1.8最终版(Java SE Development Kit 8u231)。 MD5验证地址:www.oracle.com/webfolder/s/digest/8u231checksum.html
    2021-11-12 00:37:38下载
    积分:1
  • STC89C52RC使用电位器控制WS2812B调光
    STC89C52RC使用电位器控制WS2812B调光,晶振24M,使能6T,否则频率不够(https://blog.csdn.net/yaleond/article/details/83474974)
    2020-12-03下载
    积分:1
  • Multisim仿真实例(200个电路仿真文件)
    约200个Multisim仿真文件,有助于学习Multisim软件、学习电子线路基础知识
    2020-06-28下载
    积分:1
  • huff编解码matlab算法
    huff是无损压缩,绝对可用的哈夫曼编解码,本程序附带图像数据处理试验结果 原始数据与编码后解码后的数据结果完全相同。
    2020-12-08下载
    积分:1
  • 基于stm32设计的一款简易示波器
    基于stm32开发的简易示波器,使用了stm32自带的adc采样所以速率只能到达几十K。但是对于刚学习示波器使用的孩子,很有借鉴意义。
    2020-12-03下载
    积分:1
  • 永磁同步电机直接转矩控制--传统模型
    适合刚入门的新手的仿真模型,永磁同步电机的直接转矩控制模型。
    2020-12-04下载
    积分:1
  • 696516资源总数
  • 106914会员总数
  • 0今日下载