What do these pin types mean?

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NextEngine

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Hello, I try to make some symbols of ICs using tragesym.
The template requires the definition of pin type, and it enumerates all the selection: in, out, io, oc, oe, pas, tp, tri, clk, pwr
Some of those are easy to understand, eg: "in" means the pin is used as input, "out" means the pin is used as output...
But others is difficult to understand, eg: oc, oe, pas, tp, tri...

Can anybody gives some articles or web pages which discuss the details of those pin types?
 

In the program, what does the help say about this?

Searching Google does not seem to show much about it - perhaps email the author of the program?
 

I found the definition from the official wiki page, so the problem is solved.

in Input
out Output
io Input/Output
oc Open collector
oe Open emitter
pas Passive
tp Totem pole
tri Tristate (high impedance)
clk Clock
pwr Power/Ground
Table 1: pintype values

refer to the pintype section of the following page
links: **broken link removed**
 

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