tag 标签: analog

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  • 热度 1
    2015-11-30 11:38
    283 次阅读|
    0 个评论
         ADI仿真器如 ADZS-HPUSB-ICE挂在ADSP的时候报错,发现TEST都没有问题可以正常通过,但是就是连不上。可能会如下几个原因:  1.  目标板问题 ADI仿真器没有问题,只是因为目标板里已经有程序,而BMODE设置的不对,导致ICE挂不进去。解决的办法是通过硬件修改来BMODE。如果这样操作也仍然连不上,可以检查一下自己的JTAG设计是否非常规[具体请参考ADI官方文档JTAG仿真技术参考EE-68]。ADZS-HPUSB-ICE对JTAG设计的容忍度是很高的,但也不是无限制的。特别是用得时间比较长的ICE,会更差一些。所以我还是建议JTAG设计尽量走线短,按照标准设计来,如果一定因为板子尺寸等其他原因必须要飞出来,把那个飞线用锡纸包一下,锡纸跟板上的地连起来,稍微做一个屏蔽,很有效。如果还是解决不了,ICE的JTAG线有问题了,需要维修。  当然,还有可能是板子焊接的问题,如果要查焊接的问题,通常可以先检查板子的内核和系统电压,时钟,复位,ARDY,NMI管脚的上下拉。   2. USB连接线问题 最近发现的比较有共性的ADI仿真器故障,适用于ADZS-HPUSB-ICE和迪码的HPUSB4.0、HPUSB5.0、HPUSB5.0Plus、HPUSB6.0Plus。如果在搭建好环境后,发现自己的仿真器在PC下不识别,在设备管理器里看不到下面的图:   更新驱动也没办法,但是在USB输入设备里出现了一个“Unknow Device”的提示,而且这个提示又显示说驱动已经装好了。遇到这种问题,大多数原因不在ICE,而是USB线。解决这个问题的办法就是换一根质量好的(带磁环)的USB线,或者迪码自主研发的3头Stable连接线缆,有2个U口接入PC端的,或者把你接在台式机前端U口换到机箱后面去。    3.  驱动文件丢失 ADI DSP的仿真器驱动有可能会因为操作系统或者自身的Visual DSP和CCES软件原因,莫名的损坏,这个时候需要重新安装一下驱动,ADI原厂仿真器以及东方迪码的DM-HPUSB4.0、DM-HPUSB5.0、DM-HPUSB5.0Plus、DM-HPUSB6.0Plus仿真器,其驱动均不需要再安装额外的驱动文件,所有的驱动均在你已经装好Visual DSP++软件里了。[具体请参考ADI仿真器驱动问题解疑文档]    4. 固件升级 相信大家都会遇到,使用最新ADI开发环境的时候,先进行一下TEST测试,会提示升级固件。点击开始后会发现没有反应,TEST也不报错,这时千万不要断电和关闭软件,升级已经开始了大概需要30秒左右,等到TEST第一步报错时,说明升级完成重新给ICE上电,就可以正常使用了; 更多详情,可登录www.eastdima.com 北京东方迪码科技有限公司  010-51265278  
  • 热度 1
    2013-2-15 14:54
    1166 次阅读|
    0 个评论
    Digilent Inc. is a fascinating company that specialises in creating boards and kits for educational purposes. They sell all of the usual sorts of hardware like FPGA and PSoC boards. But they don't neglect the analogue part of the embedded world, and have some very interesting products in that domain. One is the Analog Discovery, a low-cost USB scope. A companion product is the Analog Parts Kit , which is exactly what you'd expect from the name. It's a box packed with all sorts of components for playing with analogue circuits. Clearly they have a relationship with Analog Devices as the ICs all come from that company and Analog's logo is splashed across their web site. No problem there; I've been a fan and user of Analog's parts since just a few years after their founding in 1965. The kit includes a wide selection of passives like resistors, capacitors, pots, and inductors. The active devices cover a pretty broad range, including transistors, diodes, LEDs, op amps, voltage regulators, and references. But there's also an instrumentation amp and matched transistor packages. Serious parts for serious analogue work. Sensors abound, which makes it possible to build some pretty cool circuits. These include current, magnetic, vibration, and temperature sensors, as well as an accelerometer and photocell. There's also a 6.5" X 1.25" solderless breadboard with 70 jumper wires with pin ends.   Analog Parts Kit—I lifted this pic from Digilent's web site. It does a poor job of showing the wealth of included components.   Ten of the supplied ICs are SMT devices, which would normally create all sorts of headaches for experimenters. But these are cleverly mounted on tiny little PCBs which plug directly into the prototyping board.   DIPizing an SMT part. The Kit comes with zero documentation. For instance, we pros know what "104" means on a capacitor, but the novice will be clueless. The Kit's web page mentioned earlier does have a picture of each component, which helps. And there's a very helpful link to each part's datasheet. Digilent's analogue kit The Kit is a very useful jumble of parts that is just aching for a companion booklet that leads newbies to the nondigital world through the fun landscape of analogue electronics. An experienced engineer who needs parts for occasional experiments will find the Kit very useful. For $60 ($50 if purchased with the Analog Discovery scope) this is also a great deal for a parent of a youngster who wants to learn more about electronics. He will, however, need a mentor or will have to do a lot of homework to find ways to use the components. This page gives a half-dozen experiments. For instance, one shows how to measure the resonance of a loudspeaker, which is a pretty cool concept as resonance is such a fundamental idea in electronics. But there's not a peep about what resonance is and why the experiment works. The company also has over 40 videos explaining analogue electronics with Powerpoint slides. Each has a couple of experiments, too, that use the Analog Parts Kit and the Analog Discovery. I looked at several of the videos and the slides; the courses look extremely complete. Go through them and you'll learn a tremendous amount about analogue. But you'll also need to know calculus, which pegs this above the amateur level. The target market seems to be the engineering student crowd. Yet the components could get a much younger kid interested in this field. Analog Devices has a bunch of experiments here . They use a solderless breadboard but apparently not the Analog Discovery kit, as some of the activities require components not provided with the kit. At least one uses a 741 op amp! A great part in its day, but that day was long, long ago. We had family here over Christmas. One of the children asked about the clutter of test equipment and components in my office. Using the Kit, in just a few minutes we built a sensor that flashed an LED when the temperature exceeded 75 degrees using the TMP01. Then, adding the AD654 V/F converter, a capacitor, and a few resistors we had the temperature varying a square wave's frequency. That, of course, meant using a scope. He was mesmerized. Every engineering student needs this or something similar to get some real hands-on experience with circuits. Reading about the subject is fascinating, but building stuff is what builds great engineers.  
  • 热度 1
    2012-7-27 13:26
    755 次阅读|
    0 个评论
    A . Job Description 1. As an analog design manager, lead the analog design team, train the team members, build up the team design capability. 2. As a project manager, lead the team to develop, verify and debug kinds of power IC. Allocate resource, make the execution plan, track the schedule and finally, be responsible for the project successful. 3. Optimize and supervise the design flow to guarantee design quality. 4. Lead the analog design, IC layout and PCB design. 5. Advise on the test development and chip characterization. B. Requirements 1. With minimum 8 years of hands on experience on Analog or Mixed-Signal IC Designs. 2. Experienced in the management of design team. 3. Successful experience in PMIC, including DC-DC,LDO,AC-DC,LED driver,charge pump,charger. 4. Strong understanding of CMOS process, High-V process and BCD process. 5. Familiar with the power device, can help engineers and customers design PCB. KT-Judy Add: 2F Wandelai building, No.29 Kejiyuan South Sixed Road, Shenzhen, China Tel: (86)755-8636 9010-801 Mobile:(86)180 2532 3009 MSN: judy9228@hotmail.com QQ:782288610 Email: judy-wu@kthr.com http://www.kthr.com KTHR----We focus on IC/Telecom/Electronics industry ****************************************
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