Each pin must have a pintype=value attribute attached to it and should be make hidden. Table 1 shows valid values for this attribute.
This attribute is not used extensively in the symbol library, but it will be used for DRC and netlisting. Use “passive” if no other type matches.
Examples:
pintype=clk pintype=in pintype=pas
Input
Output
Input/Output
Open collector
Open emitter
Passive
Totem pole
Tristate (high impedance)
Clock
Power/Ground