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Bidir pins together ?

Altera_Forum
Honored Contributor II
‎08-09-2010 11:00 AM
1,611 Views

Hi, 

I'm currently trying to connect two bidir pins together in a schematic with quartus (as you can see on the picture) 

but, i don't why, i get this error : BIDIR pin "xxx" feeds BIDIR pin "yyy" 

maybe i should put something between my two bidir ?  

but which component because I only need (must have) a wire 

Thanks in advance
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Altera_Forum
Honored Contributor II
‎08-09-2010 04:13 PM
504 Views

you can't do that. without control logic, should a pin be input or output ?? in which directions should the sinal flow be from left to right or vice versa ? 

you need to control that with an output enable
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Altera_Forum
Honored Contributor II
‎08-09-2010 05:06 PM
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Each bidir pin must be driven by a tri-state driver.

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