Creator 2.0中的PSoC 5需要用于USB的XTAL时钟

PSOC5IMO没有它应该的那样好，我想你需要用PoS5与USB的晶体。我认为PSOC3应该没有XTAL。



     以下为原文
  PSOC5 IMO is not as good as it supposed to be, I think you need crystal for PSOC5 with USB. The PSOc3 should be OK without xtal I think.

是否有必要将外部晶体作为PSOC5器件的时钟源？
这取决于使用PSOC5的应用。PSOC5设备家族在IMO上具有5%的容忍度。如果您的PSOC5应用程序具有严格的时序要求，则必须有一个精确的时钟源。特别地，对于具有UART或USB的通信组件的项目，必须使用PSOC5使用外部MHz晶体。



     以下为原文
  Is it mandatory to have an external crystal as the clock source for PSoC5 device?
    It depends on the application in which PSoC5 is used. The PSoC5 device family has a tolerance of 5% on the IMO. If your PSoC5 application has strict timing requirements it is necessary to have an accurate clock source. Especially, for projects that have communication components such as UART or USB, it is mandatory to use external MHz crystal with PSoC5

下面列出的是PSOC5的推荐晶体和电容器。
CY8CKIT-050:
Y3
晶体24.000兆赫20PF SMD
ECS公司
ECS-240－205PX-TR
C30，C31
CAP，CER，22 PF，50V，5%，COG，0603，SMD
松下心电图
ECJ-0EC1H220J
CY8CKIT-010:
Y2
晶体，24兆赫，30 ppm，HC49，SMD
ECS公司
ECS-240－125PX-TR
C26，C27
CAP，CER，12 PF，50V，5%，COG，0603，SMD
村田电子北美公司
GRM1885 C1H120 JA01D
在CY8CKIT-010（PSoC CY8C55处理器模块）的情况下，晶体和相应的电容器（C26和C27）应该如下图所示安装：
如果cy8ckit-050，水晶和相应的电容器（C30、C31）应安装如下图所示：



     以下为原文
  Listed below are the recommended crystal and the capacitors for PSoC5.
    CY8CKIT-050:
                                                                                                 

Y3	CRYSTAL 24.000MHZ 20PF SMD	ECS Inc	ECS-240-20-5PX-TR
C30,C31	CAP, CER, 22 pF, 50V, 5%, COG, 0603, SMD	Panasonic - ECG	ECJ-0EC1H220J

     
    CY8CKIT-010:
     
                                                                                                 

Y2	CRYSTAL, 24 MHz, 30 ppm, HC49, SMD	ECS Inc	ECS-240-12-5PX-TR
C26,C27	CAP, CER, 12 pF, 50V, 5%, COG, 0603, SMD	Murata Electronics North America	GRM1885C1H120JA01D

     In case of CY8CKIT-010 ( PSoC CY8C55 Processor Module) the crystal and the corresponding capacitors(C26 and C27) should be mounted as shown in the picture below:
     
     
     
    In case of CY8CKIT-050, the crystal and the corresponding capacitors(C30 and C31) should be mounted as shown in the picture below:

     
   

为了在PSoC Creator项目中使用外部MHz晶体，需要在项目的设计范围内的资源文件中进行以下设置：



     以下为原文
   In order to use the external MHz crystal in your PSoC Creator project, the following setting needs to be done in the Design Wide resource file of the project: 
     

哎呀，我猜出了什么事。附加具有相同内容的PDF。
MHZCHILATAL.PDF
410.4 K



     以下为原文
   Oops, something went wrong I guess. Attaching a pdf that has the same content.

•   MHzCrystal.pdf 410.4 K  
  
  

这真的是一个12pf电容为010？图像显示22PF电容器，数据表表示相同（AN5439也是）。



     以下为原文
  Is it really a 12pF capacitor for the -010? The image shows 22pF capacitors, and the datasheet says the same (and AN54439 too)..

为什么不使用IMO作为USB选项呢？可能显示警告或通知？正如我所说，我没有任何失败与创建者1。
我想WHH外部晶体，你会失去灵活性的一些应用程序。
拜伊



     以下为原文
   Why not leave using IMO for USB as an option? Maybe showing warnings or notices? As said I did not had any failures with Creator 1.0.
     
    I think wih external crystal you will lose flexibility for some applications.
     
    Bye

我也可以使用12MHz的晶体吗？（我只有一个铺设，但不是一个24MHz的一个。）我会改变配置，但我不知道USB /UART是否直接使用IMO或主时钟…



     以下为原文
  Can I use a 12MHz crystal as well? (I just have one laying around, but not a 24MHz one). I would neet to change the configuration, but I don't know whether USB / UART uses the IMO directly or the master clock...

只要锁相环采用晶振作为源，它应该是好的。



     以下为原文
   As long as the PLL is using a XTAL as the source, it should be OK.

在Range4 - 25 MHz的任何晶体都可以使用。水晶输入可以锁定任何频率范围在24–67兆赫使用锁相环；同样可以作为系统主时钟。对锁相环的公差取决于输入时钟的宽容；那是水晶。选择水晶是足够准确的你的频率。



     以下为原文
  Any crystal in the range 4 – 25 MHz can be used. The crystal input can be locked to any frequency in the range 24 – 67 MHz using the PLL; same can be used as Master Clock for the system. The tolerance on the PLL is dependent on the tolerance of the input clock; that is the crystal. Chosse a crystal which is accurate enough for your frequency.

这是一个冷水淋浴后安装2和外部XLATAR是需要编译我的老项目。我真的很抱歉读到这个。我们刚刚开始生产，我们已经在长时间内迭代了几次修改。我们没有发现任何问题或看到任何关于USB通信的警告。在Cyror 2.0'和CyPress站点上的新特性中，没有什么被提及，只是现在在这个线程中。真的很糟糕。我会说塞浦路斯在2安装之前保存了我的1.0档AsSub是幸运的。我们要坚持为我们PCB创造者直到下一次修订。不快乐：



     以下为原文
  It was a cold shower after installing 2.0 and an external XTAL is required to compile my old project. I'm really sorry to read this. We are just starting production with a NO-XTAL-design that we have iterated several revisions during long time. We haven't found any problems or seen any warnings about the USB-communication. And nothing is mentioned about that in new features for Creator2.0 nor on the Cypress site either, only now in this thread. Really bad. I'll say Cypress is lucky to have saved my 1.0-files as backup before installaition of 2.0. We will have to stick to Creator 1.0 until next revision of our PCB. Not happy :(

这个链接HTTP://www. CyPress？RID＝55948有关于在不同的硅、软件版本之间迁移设计的文档。它可以从创建者、帮助和文档中访问。
当做，
-维韦克



     以下为原文
  This link http://www.cypress.com/?rID=55948 has documentation on migrating designs between different silicon, software versions. It can be accessed from Creator from, Help -> Documentation -> Migration Guide.
     
    Regards,
    -Vivek

使用外部晶体需要创造者2.0发布的知识库文章记录在Cypress网站。



     以下为原文
   The need for using an external crystal was documented during Creator 2.0 release in this     Knowledge base article on Cypress website.

我还问为什么不让选择IMO作为USB时钟源造物主1这是可能的吗？
弗兰兹



     以下为原文
   I'am still asking why not let the option to choose IMO as USB clock source as this is possible in Creator 1.0?
    Franz

有人试图降低到一个旧版本的USB组件吗？这是可能的吗？这会起作用吗（没有X-TAL）？？？？
鲍勃



     以下为原文
  Has anybody tried to down-grade to an older version of an USB-component? Is that possible?? Will it work (without x-tal)???
    Bob

即使你降低了UBFS组件的版本，只要你使用PSoC Creator 2，你就必须为PSoC5使用外部晶体。



     以下为原文
  Even if you downgrade the version of the USBFS component, as long as you use PSoC Creator 2.0, you will have to use an external crystal for PSoC5.

对于CY8CKIT-010，并遵循AN544 39方程2：
Cl1＝Cl2＝2×Cl-（CP-CB）
让Cl= 20PF（来自ECS晶体规范）
让CP＝5PF（来自PSoC®5：CY8C55系列数据表页61）
让Cb~1PF（来自微带估计）
……如何才能达到π网络电容器的22pf值？
为什么选择了CY8CKIT-010不同的晶体？
通过假设12pf来解决在CY8CKIT-010的论坛帖子中张贴的表和插图之间的冲突是C26和C27的正确值，并且匹配CL的12PF的ECS规范，再次，如何使用均衡器到达PI网络电容器的12pf值。离子2？
如何将此信息应用于PSOC5的CyPress客户PCB的设计？



     以下为原文
  For the CY8CKIT-010, and following AN54439 equation 2:
    CL1 = CL2 = 2 * CL - (CP - CB)
    Let CL = 20pF (from ECS crystal specification)
    Let CP = 5pF (from PSoC® 5: CY8C55 Family Datasheet page 61)
    Let CB ~= 1pF (from microstrip estimate)
   
    ...how can one arrive at the 22pF value for the pi-network capacitors? 
    Why was a different crystal chosen for the CY8CKIT-010?
    Resolving the conflict between the table and the illustration posted in the forum post for the CY8CKIT-010 by assuming 12pF is the correct value for C26 and C27, and matches the ECS specification of a 12pF for CL,  again, how can one arrive at the 12pF value for the pi-network capacitors using equation2?
    How can this information be applied to the design of a Cypress customer's PCB for the PSoC5?

查理，
负载电容建议只是一个建议。负载电容中的误差对振荡频率有很小的影响。
谢谢，
马克斯



     以下为原文
  Charlie,
    The load capacitance recommendation is just that, a recommendation. Errors in load capacitance will have a small impact on oscillating frequency.
    Thanks,
    Max

我通过将来自发生器的数字信号应用到P5.7解决了CY8CKIT - 014的这个问题，我希望这个解决方案是可接受的。
DigiSigal.jPG
284.1 K



     以下为原文
  I solved this problem for CY8CKIT - 014 by applying a digital signal from the generator to P5.7
I hope that this solution is acceptable.

•   Dig_Signal.jpg 284.1 K