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| What exactly does "-x" mean on the SE/30 Schematic redraw ? |
Posted by: smrieck511 on 2026-05-11 10:08:35
Sorry for this noobie question but what does this mean? It can't be ground, those pins are obviously marked and it can't be to nothing, those pins are left off the schematic so I'm lost on pins going to -x. |
Posted by: David Cook on 2026-05-11 11:20:37
Can you post a picture of that area of the schematic? |
Posted by: Phipli on 2026-05-11 11:22:19
It means not connected to anything. |
Posted by: smrieck511 on 2026-05-11 11:58:28
Here's a good example. What would then be the difference between Pin 7 (-x) and Pin 10 (for example) which is not shown at all ?
Edit: I think I get it..the -x are an actual listed part of the circuit (identified in blue lettering. Pin 7 in this case is IE0) though they are simply soldered to their respective pad (to nothing) on that end? |
Posted by: finkmac on 2026-05-11 12:03:40
the pad exists, but it doesn't connect to anything. |
Posted by: Phipli on 2026-05-11 12:04:16
Here's a good example. What would then be the difference between Pin 7 (-x) and Pin 10 (for example) which is not shown at all ?
Edit: I think I get it..the -x are an actual listed part of the circuit (identified in blue lettering . Pin 7 in this case is IE0) though they are simply soldered to the pad on that end? 10 is missing because the person that originally drew the symbol didn't include it, the x on 7 to say unused is there because the person USING the symbol didn't need it.
Edit :
10 and 35 are power, seems they're not shown in this symbol. |
Posted by: cheesestraws on 2026-05-11 12:11:21
Yes; it's marked with an X so you know that it's deliberate, not just that the person who drew the schematic forgot to finish that bit. |
Posted by: smrieck511 on 2026-05-11 12:13:16
Ok I understand now. Thanks. |
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