In the Vivado IDE I see "DIFF_TERM_ADV" has a value of "TERM_NONE" in the "I/O Ports" tab for the clock input "sys_clk_p". However, when I run the following command in the Tcl console, I get an empty value: get_property DIFF_TERM_ADV [get_ports sys_clk_p] ...
set_property DIFF_TERM_ADV TERM_NONE [get_ports LVDS_P_PORTNAME] When internal 100ohm differential termination IS desired use the following: set_property DIFF_TERM_ADV TERM_100 [get_ports LVDS_P_PORTNAME] URL 名称 67219 文章编号 000024714 ...
该错误提示约束属性中约定了DIFF_TERM_ADV,但是DIFF_HSTL_I_12电平标准不支持。具体的原因笔者不太清楚,但是大概是和电平标准还有BUFG相关。在我的代码中,引入了差分时钟信号clk_p、clk_n,但是需要使用单端信号,因此使用IBUFDS对信号进行了转换。代码如下: IBUFDS #(.DIFF_TERM("TRUE"), .IBUF_LOW_PWR("FALSE"...
11111114 # Last query term was a normal field. 11121115 column = field.column 11131116 db_type = field.db_type() 1114 11151117 where.append(get_where_clause(lookup_type, current_table + '.', column, value, db_type)) 11161118 params.extend(field.get_db_prep_lookup(lookup_type, value)...
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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_...