make_diff_pair_ports - 2023.2 English

Vivado Design Suite Tcl Command Reference Guide (UG835)

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2023.2 English

Make differential pair for 2 ports


make_diff_pair_ports [‑quiet] [‑verbose] <ports>...


Name Description
[-quiet] Ignore command errors
[-verbose] Suspend message limits during command execution
<ports> Ports to join


XDC, PinPlanning


Joins two existing ports to create a differential pair. The port directions, interfaces, and other properties must match in order for the specified ports to be joined as a differential pair. Otherwise an error will be returned.

Important: The two ports must first be created, either by using the create_port command or by reading in an XDC file, prior to making them into a differential pair.


-quiet - (Optional) Execute the command quietly, returning no messages from the command. The command also returns TCL_OK regardless of any errors encountered during execution.
Note: Any errors encountered on the command-line, while launching the command, will be returned. Only errors occurring inside the command will be trapped.
-verbose - (Optional) Temporarily override any message limits and return all messages from this command.
Note: Message limits can be defined with the set_msg_config command.

<ports> - (Required) Two port objects to join as a differential pair. The first port specified will be the positive side of the differential pair.


The following example joins the two specified ports to create a differential pair:

make_diff_pair_ports port_Pos1 port_Neg1