1.打开合成/实施项目,通过选择预期的IO垫并查看其“属性”选项卡,检查是否已应用DIFF_TERM = TRUE。 2.在IO pad上使用get_property tcl命令。 下面的示例显示了检查DIFF_TERM属性的两种方法的屏幕截图。 在这种情况下,属性被应用于并检查DRP时钟。 在原帖中查看解决方案 2020-7-24 09:47:35 评论 举报 ...
2.接下来,可以使用set_property命令来定义差分时钟的约束。下面是一个示例: ```tcl set_property IOSTANDARD {DIFF_SSTL18_II} $input_clk set_property CLOCK_DEDICATED_ROUTE TRUE [get_nets $input_clk] set_property DIFF_TERM TRUE [get_property PAD $input_clk] ``` 上述代码中,IOSTANDARD属性设置为DI...
在Vivado设计环境中,遇到错误代码[vivado 12-1411] cannot set loc property of ports, the positive port (p-side)通常与试图为FPGA设计中的某些端口(特别是差分对端口的一部分)设置物理位置(loc属性)时出现的问题相关。以下是对这一问题的详细分析和建议解决方案: 1. 理解错误代码[vivado 12-1411]的含义 该错...
输入A_P;输出B_N;输出B_P;分配B_N = A_N;分配B_P = A_P;系统 system_i（.CLK_P（A_P...
As noted, defining DIFF_TERM via the XDC file will ensure the implementation tools operate correctly and will over-ride any attribute set in the HDL. When internal differential termination is NOT desired use the following: set_property DIFF_TERM_ADV TERM_NONE [get_ports LVDS_P_PORTNAME] When...
Resistance in Ohms INST a_IBUF[0]_inst DCI_VALUE = 75; set_property DCI_VALUE 75 [get_cells {a_IBUF[0]_inst}] DIFF_TERM Applied To Constraint Values UCF Example XDC Example I/O buffer cells Boolean INST a_IBUF[0]_inst DIFF_TERM = TRUE; set_property DIFF_TERM true [get_cells {...
ports in the I/O Ports window, right-click, and select Fix Ports, or enter the following Tcl command in the Tcl Console: set_property IS_LOC_FIXED true [get_selected_objects] Alternatively, you can enter the following Tcl command to fix ports: set_property IS_LOC_FIXED true [get_ports...
Do not assign any I/O standards with ODT attribute set to RTT_240 or RTT_120 for I/O pins that are placed in HR I/O banks. 4) Bitgen error when IBUFDS primitive with DIFF_TERM=TRUE and IOSTANDARD=SLVS_400_25 is assigned in an HR I/O Bank: Vivado 2014.1 is not supporting the ...
setmyreused_cells[get_cells-hier-filterIS_REUSED==TRUE]report_property[lindex$myreused_cells0] setmyreused_nets[get_nets-hier-filterIS_REUSED==TRUE]report_property[lindex$myreused_nets0] setmyreused_pins[get_pins-hier-filterIS_REUSED==TRUE]report_property[lindex$myreused_pins0] ...
The Tcl command issued was "get_property DIFF_TERM_ADV [get_ports sys_clk_p]". This returns an empty set because the value has not been explicitly set and the command did not request the default value. In spite of the difference in displayed values, at bitstream, all default values will...