时钟管脚设置问题 xilinx ERROR:Place:864 - Incompatible IOB's are locked to the same bank 0

ERROR:Place:1108 - A clock IOB / BUFGMUX clock component pair have been found   that are not placed at an optimal clock IOB / BUFGMUX site pair. The clock   IOB component <Clk_125M> is placed at site <PAD99>. The corresponding BUFG   component <U_Clk_ctrl/U_2_CLK_SWITCH/U_BUFGMUX> is placed at site   <BUFGMUX_X2Y12>. There is only a select set of IOBs that can use the fast   path to the Clocker buffer, and they are not being used. You may want to   analyze why this problem exists and correct it. If this sub optimal condition   is acceptable for this design, you may use the CLOCK_DEDICATED_ROUTE   constraint in the .ucf file to demote this message to a WARNING and allow   your design to continue. However, the use of this override is highly   discouraged as it may lead to very poor timing results. It is recommended   that this error condition be corrected in the design. A list of all the   COMP.PINs used in this clock placement rule is listed below. These examples   can be used directly in the .ucf file to override this clock rule.   < NET "Clk_125M" CLOCK_DEDICATED_ROUTE = FALSE; >

你在你引脚声明的下面加上这句话 NET "cp" CLOCK_DEDICATED_ROUTE = FALSE;  因为这是时序约束造成的。最后的样子是下面:NET "i_clk" CLOCK_DEDICATED_ROUTE = FALSE;NET "i_clk" LOC = B18;

ISE编译时遇到的错误,网上也有很多此类的说明

ERROR:Place:1018 - A clock IOB / clock component pair have been found that are not placed at an optimal clock IOB /
   clock site pair. The clock component <in_BUFGP/BUFG> is placed at site <BUFGMUX_X2Y10>. The IO component <in> is
   placed at site <PAD60>.  This will not allow the use of the fast path between the IO and the Clock buffer. If this
   sub optimal condition is acceptable for this design, you may use the CLOCK_DEDICATED_ROUTE constraint in the .ucf
   file to demote this message to a WARNING and allow your design to continue. However, the use of this override is
   highly discouraged as it may lead to very poor timing results. It is recommended that this error condition be
   corrected in the design. A list of all the COMP.PINs used in this clock placement rule is listed below. These
   examples can be used directly in the .ucf file to override this clock rule.
   < NET "in" CLOCK_DEDICATED_ROUTE = FALSE; >
该错误在旧版本的ise中可以通过添加环境变量的方法来忽略,在ise12中可以在ucf文件中添加:

NET "in" CLOCK_DEDICATED_ROUTE = FALSE;

来忽略此错误,错误形成的原因可能为:

布板的时候时钟接到了fpga差分时钟的N脚了,单端时钟一定要接到P脚,这样才能使用全局时钟布线资源,保证时钟性能。

时钟管脚设置问题 xilinx ERROR:Place:864 - Incompatible IOB's are locked to the same bank 0

时间: 2024-09-30 16:33:51

时钟管脚设置问题 xilinx ERROR:Place:864 - Incompatible IOB's are locked to the same bank 0的相关文章

FPGA专用时钟管脚问题

转自:http://www.eefocus.com/liu1teng/blog/12-02/237897_4533d.html 前一段时间画了一块千兆扩展板,板子上有千兆网口和千兆光纤接口,两种介质可以通过跳线来转换,板子做好之后进行回环测试时,发现网口会有随机的丢帧现象,而光口是正常的,一直没有找到问题根源,后来在做另一个项目里,需要写MAC的时序约束,发现Xilinx提供的MAC硬对'RX_CLK'的时序约束要求很高,建立时间只有2.5ns,保持时间0.5ns,无论怎么反复修改这个约束值都无

时钟+温度+遥控设置,综合时钟例子

时钟+温度+遥控设置,综合时钟例子6月30日到手的二手单片机开发板,今天做个综合的时钟例子,包含代码和仿真.做个近期的学习总结. 按独立键盘K1和红外遥控的EQ为设置键.按独立键盘K2和红外遥控的VOL+为加键.按独立键盘K3和红外遥控的VOL-为减键. 手摸温度传感器,当温度超过 34℃ 的时候点亮LED灯,模拟启动的设备. 程序有很多细节没有优化,主要是学习,lcd1602显示,独立建扫描,红外遥控,ds1302时钟芯片,ds18b20温度传感器. 实时时钟综合应用,源代码和仿真下载http

FPGA学习记录 - Quartus II 未使用管脚设置为三态输入

未使用管脚设置为三态输入 Assignments  -> Device 或双击器件 Device and Pin Options

jquery.jqprint-0.3.js打印功能 以及页眉页脚设置显示与否

项目中需要打印 搜索使用了jquery.jqprint-0.3.js 遇到一些样式问题,现在已经解决 ,记录下来供大家参考. 下面图显示为我页面中的样式 打印需要一列显示,解决办法就是写到行内元素上,页面显示写到页面style样式中 下面为谷歌显示的打印效果,可以勾除页眉页脚设置 火狐浏览器需要这样设置页眉页脚 打印-->页面设置  设置完以后打印效果一样 原文地址:https://www.cnblogs.com/wdd-cindy/p/9151089.html

关于Error during managed flush [Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1]错误

控制台报错: 08:07:09.293 [http-bio-8080-exec-2] ERROR org.hibernate.internal.SessionImpl - HHH000346: Error during managed flush [Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1] 查阅许多博客得出了自己的理解,请大家指教: 由于存在隐藏表单进

IntelliJ运行下载的Servlet时报错 Error running Tomcat 8.5.8: Unable to open debugger port (127.0.0.1:49551): java.net.SocketException

学习Java Servlet时,从Wrox上下载了示例代码,准备run/debug时发现以下错误: Error running Tomcat 8.5.8: Unable to open debugger port (127.0.0.1:49551): java.net.SocketException "Socket closed" /Users/GuQiang/Tomcat/apache-tomcat-8.5.8/bin/catalina.sh stopUsing CATALINA_B

Error Code: 1318. Incorrect number of arguments for PROCEDURE student.new_procedure; expected 0, got

1.错误描述 13:58:20 call new_procedure('2000','zhangsan') Error Code: 1318. Incorrect number of arguments for PROCEDURE student.new_procedure; expected 0, got 2 0.000 sec 2.错误原因 CREATE DEFINER=`root`@`localhost` PROCEDURE `new_procedure`() BEGIN set @a=1

AndroidStudio创建TV-APP,出现Error:(28, 13) Failed to resolve: com.squareup.picasso:picasso:2.5.0 的解决

前两天在尝试编写TV-APP时,使用AndroidStudio创建一个TV应用后,Gradle编译出现了: Error:(28, 13) Failed to resolve: com.squareup.picasso:picasso:2.5.0  错误. 百度发现picasso包是square团队的一个开源的Android图像增强工具,github地址:https://github.com/square/picasso. 进入正题: 1.点击Messages框中,出现错误信息处的---show

Error:(27, 13) Failed to resolve: com.android.support.constraint:constraint-layout:1.0.2约束布局constraint-layout导入失败的解决方案

运行demo提示错误: Error:(27, 13) Failed to resolve: com.android.support.constraint:constraint-layout:1.0.2是你的androidStudio 要安装插件才可以运行这个包. 详细步骤说: a. 点击Tools>android>SDK Manager b. 点击SDK Tools标签 c.选择show pack details,找到support repository->constraintlayou