套件里提供的ucf只有管脚约束没有电压约束,如下
- NET "DDR3_A0" LOC = "L14"; ## 98 on J1
- NET "DDR3_A1" LOC = "A16"; ## 97 on J1
- NET "DDR3_A2" LOC = "B16"; ## 96 on J1
- NET "DDR3_A3" LOC = "E16"; ## 95 on J1
- NET "DDR3_A4" LOC = "D16"; ## 92 on J1
- NET "DDR3_A5" LOC = "J17"; ## 91 on J1
- NET "DDR3_A6" LOC = "A15"; ## 90 on J1
- NET "DDR3_A7" LOC = "B15"; ## 86 on J1
复制代码现在非常需要有电压约束的ucf文件,如下
- ##
- NET "GPIO_LED_C" LOC = "AP24" |IOSTANDARD=LVCMOS25; ## 2 on LED DS16
- NET "GPIO_LED_E" LOC = "AE21" |IOSTANDARD=LVCMOS25; ## 2 on LED DS19
- NET "GPIO_LED_N" LOC = "AH27" |IOSTANDARD=LVCMOS25; ## 2 on LED DS20
- NET "GPIO_LED_S" LOC = "AH28" |IOSTANDARD=LVCMOS25; ## 2 on LED DS18
- NET "GPIO_LED_W" LOC = "AD21" |IOSTANDARD=LVCMOS25; ## 2 on LED DS17
- ##
- NET "GPIO_SW_C" LOC = "G26" |IOSTANDARD=LVCMOS15; ## 2 on SW9 pushbutton (active-high)
- NET "GPIO_SW_E" LOC = "G17" |IOSTANDARD=LVCMOS15; ## 2 on SW7 pushbutton (active-high)
- NET "GPIO_SW_N" LOC = "A19" |IOSTANDARD=LVCMOS15; ## 2 on SW5 pushbutton (active-high)
- NET "GPIO_SW_S" LOC = "A18" |IOSTANDARD=LVCMOS15; ## 2 on SW6 pushbutton (active-high)
- NET "GPIO_SW_W" LOC = "H17" |IOSTANDARD=LVCMOS15; ## 2 on SW8 pushbutton (active-high)
复制代码
求助
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对的,所以想求助一下,不知道谁有
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