BIDIR or INOUT Primitive/Port
| AHDL Syntax: |
io : BIDIR; |
| VHDL Syntax: |
io : INOUT |
| Source: |
TRI or OPNDRN |
| Destination: |
Device I/O pin |
If TRI is disabled, external input is allowed. If TRI is enabled and an external signal is applied, signal contention is possible and could damage the device.
In a Block Design File (.bdf), you can use the Pin Properties dialog box to specify pin properties for this primitive, such as the pin name and default value.
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Only the pin assignments of the compilation focus are used during compilation. |
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