由于上面的引脚分配仅仅是临时的,我们应当进行保存。勾选上图中每个端口的Fixed,将端口锁定,ctrl+s快捷键保存,会自动询问是否要保存该临时约束文件,给约束文件命名(这里命名为d_latch_IO),点击OK 可以发现source栏中多出了一个d_latch_IO.xdc文件,即为约束文件 双击打开该文件后可发现其中的具体端口约束代码。 6...
然后,在在上排的File右边的Layout->IO planning来分配IO img 按一下Group by interface and bus->下面有四个端口->IO std一般要看你开发板的IO开发板标准(一般是选LVCMOS33)->Package Pin(分配管脚)(一般是你开发板上的拨码开关)(看用户手册)-> Control s保存->ok->一般工程File name 就和你设计文件名称...
然后,在在上排的File右边的Layout->IO planning来分配IO 按一下Group by interface and bus->下面有四个端口->IO std一般要看你开发板的IO开发板标准(一般是选LVCMOS33)->Package Pin(分配管脚)(一般是你开发板上的拨码开关)(看用户手册)-> Control s保存->ok->一般工程File name 就和你设计文件名称一致...
default: out=1'b0; endcase endmodule 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 保存Ctrl+S 为设计添加约束 可以通过左边的导航栏中 PTL ANALYSIS Open Elaborated Design 单击OK 如果没有一些窗口可以在Windows添加显示 这样就可以显示了 现在开始设置IO Ports 设置I/O Std...
IO Port Bus Properties Posted IT'S BLINKING! Which means, the workaround works! One interesting thing is that for buttons (D19, D20) it works with the original definitions from the *.xcd file, so I did not have to change: btn[0] to btns_2bits_tri_i[0] ...
另外,因为用到了2.5V的LVDS,设置I/O std,按需分配2.5和3.3V电压。用default值implement时电压要报错,需要将PS MIO电压设为2.5V。 四、SDK使用 Write bitstream成功后就可以开始写c code了控制ps传输了。 File –> Export -> Export Hardware(with bitstream) ...
I/O约束主要是对port的位置和电气特性进行设置,进入菜单栏Window的IO Ports,可以查看可约束的相关内容。 一些port的常用特性解释如下 Name: port的名称 Direction:port的输入输出类型,有三种,输入in,输出out,双向端口inout Package Pin:port约束的位置 I/O Std:port的IO标准 ...
Vivado Design Suite User Guide oSfetehiaslldvoecrusmioennst Creating and Packaging Custom IP UG1118 (v2021.2) November 3, 2021 Xilinx is creating an environment where employees, customers, and partners feel welcome and included. To that end, we're removing non-inclusive language from our ...
UG903 (v2022.1) June 1, 2022 Using Constraints Send Feedback www.xilinx.com 14 Chapter 2: Constraints Methodology Figure 3: XDC Files in the IP Sources By default, IP XDC files are read in before the user XDC files. Processing it in this way allows an IP to create a clock object ...
Again compared to the full list of signals the *olo_base_fifo_sync* provides many lines of obfuscating code can be omitted because all optional input ports come with default values. ``` entity olo_base_fifo_sync is ... port ( -- Control Ports Clk : in std_logic; Rst : in std_lo...