Error (169008): Can't turn on open-drain option for differential I/O pin
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Error (169008): Can’t turn on open-drain option for differential I/O pin <pin name>
Description
如果一个设计有差分HSTL、SSTL和BLVDS I/O标准的双向管脚处于悬空状态,那么Quartus® II软件Fitter将产生错误。
Workaround/Fix
为了避免这个Fitter错误,需要将悬空的差分I/O标准的bidir管脚连接到差分模式下的ALTIOBUF宏功能中。
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