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How can I set bus's direction in spicein?

gaojun

Hi,

I'm using spicein to import cdl netlist in virtuoso 6.1.6. It work well for non bus type IO. But if the IO pin in subckt definitation is bus type, for example input<2:0>, and whether I use *.pininfo input:i or *.pininfo input<2:0>:i or *.pininfo input<2>:i input<1>:i input<0>:i, the schematic could not give this pin the correct direction. How can I fix it?

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  • gaojun
    Thanks for your explanation. In fact, if the CDL use input<1> input<0> as its port, the symbol generated will use input<1> input<0> as pin individually, and if the CDL use input<1:0> , the symbol will use input<1:0>. For CDL netlist with a lot of multi bit pins, the last symbol seems pretty than previous one. But unfortunately the pin direction is wrong.
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  • gaojun
    Thanks for your explanation. In fact, if the CDL use input<1> input<0> as its port, the symbol generated will use input<1> input<0> as pin individually, and if the CDL use input<1:0> , the symbol will use input<1:0>. For CDL netlist with a lot of multi bit pins, the last symbol seems pretty than previous one. But unfortunately the pin direction is wrong.
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