Signals List

The Signals List displays a list of signals. These signals can be read from an external source file (for example an HDL file) or entered manually. The Signals List may be closed and opened at any time by clicking View > Windows > Signals List, or by clicking the icon on the View Toolbar.

The tabs at the bottom of the list allow you to view signals by their assignment or placement status.

Lists all available signals.

Assigned

Lists signals that have assigned pins.

Unassigned

Lists signals that do not have assigned pins.

Unplaced

Lists signals that:

Have not been placed on a PCB / functional symbol.

Are not assigned.

Figure 3-1. Signal List Window

Table 3-1 describes the information listed in the Signal List for each signal:

Table 3-1. Signals List Contents

Column	Description
PCB Name	Signal PCB name
HDL Name	Signal HDL name
Dir	Signal direction
Pin	Pin currently assigned to the signal
Type	Signal type
I/O Standard	The chosen I/O standard for the currently assigned pin, such as GTL or HSTL
Swap Group	Swap group of the currently assigned pin
Locked By	Indicates whether a signal is locked
Symbol	The functional and/or PCB symbol belonging to that signal
Drive Str.	The signal’s drive strength
Termination	The signal’s termination type for Xilinx devices
Slew Rate	Programmable slew rate control
Delay	Buffer Delay
PCI Clamp	On Chip PCI-clamp diode
Pullmode	Pin Termination for Lattice devices
OPENDRAIN	On/Off Open Drain for Lattice devices
Input termination	On Chip Input Termination type for Altera devices
Output termination	On Chip Output Termination type for Altera devices
DQ Group Size	DQ Group Size
DQS for DQ	DQS for DQ information

Copying Signal Data to the Clipboard

When using the Signals List, the Edit > Copy command allows you to copy the content of the selected rows to the clipboard. The content is copied as text, one line for each row. All visible columns are copied, and their contents are separated with the tab character. In this format, the data can be pasted into a spreadsheet application.