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2.1. I/O Planning Overview
2.2. Assigning I/O Pins
2.3. Importing and Exporting I/O Pin Assignments
2.4. Validating Pin Assignments
2.5. Verifying I/O Timing
2.6. Viewing Routing and Timing Delays
2.7. Analyzing Simultaneous Switching Noise
2.8. Scripting API
2.9. Managing Device I/O Pins Revision History
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Ixiasoft
2.8.2. Reserve Pins
Use the following Tcl command to reserve a pin:
set_instance_assignment -name RESERVE_PIN <value> -to <signal name>
Use one of the following valid reserved pin values:
- "AS BIDIRECTIONAL"
- "AS INPUT TRI STATED"
- "AS OUTPUT DRIVING AN UNSPECIFIED SIGNAL"
- "AS OUTPUT DRIVING GROUND"
- "AS SIGNALPROBE OUTPUT"
Note: You must include the quotation marks when specifying the reserved pin value.