all_clocks - 2024.1 English

Vivado Design Suite Tcl Command Reference Guide (UG835)

Document ID
UG835
Release Date
2024-05-30
Version
2024.1 English

Get a list of all clocks in the current design

Syntax

all_clocks [‑quiet] [‑verbose]

Returns

List of clock objects.

Usage

Name Description
[-quiet] Ignore command errors
[-verbose] Suspend message limits during command execution

Categories

SDC, XDC

Description

Returns a list of all clocks that have been declared in the current design.

To get a list of specific clocks in the design, use the get_clocks command, or use the filter command to filter the results returned by all_clocks.

Clocks can be defined by using the create_clock or create_generated_clock commands.

Arguments

-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.

Examples

The following example shows all clocks in the sample CPU netlist project:

% all_clocks
cpuClk wbClk usbClk phy_clk_pad_0_i phy_clk_pad_1_i fftClk

The following example applies the set_propagated_clock command to all clocks, and also demonstrates how the returned list (all_clocks) can be passed to another command:

% set_propagated_clock [all_clocks]