report_datasheet - 2023.2 English

Vivado Design Suite Tcl Command Reference Guide (UG835)

Document ID
Release Date
2023.2 English

Report data sheet


report_datasheet [‑significant_digits <arg>] [‑file <arg>] [‑append]
    [‑return_string] [‑sort_by <arg>] [‑name <arg>] [‑show_all_corners]
    [‑show_oe_timing] [‑group <args>] [‑rpx <arg>] [‑quiet] [‑verbose]


Name Description
[-significant_digits] Number of digits to display: Range: 0 to 3 Default: 3
[-file] Filename to output results to. (send output to console if -file is not used)
[-append] Append the results to file, don't overwrite the results file
[-return_string] Return report as string
[-sort_by] Sorting order: Values: clock, port Default: clock
[-name] Output the results to GUI panel with this name
[-show_all_corners] Provide all corners
[-show_oe_timing] Show output enable (tristate) timing
[-group] List of output ports for skew calculation
[-rpx] Filename to output interactive results to.
[-quiet] Ignore command errors
[-verbose] Suspend message limits during command execution


Report, Timing


Create a "datasheet" report for the current design. Reports setup and hold times of input I/Os in relation to clocks, max/min delays from clocks to output pads, skews of input/ output buses.

The datasheet report has the timing characteristics of a design at the package balls/pads, including the package trace flight times. To disable flight times use the following command:

config_timing_analysis -disable_flight_delays true

The source synchronous output skew can be automatically calculated by the AMD Vivado™ Design Suite by using the -group switch for report_datasheet and grouping together all the ports of the data bus including the sourced clock output port. The sourced clock output port must be first in the group list. For example:

report_datasheet -file output_filename -group [get_ports \
   {clock_port data_bit[0] data_bit[1] data_bit[2]}]


-significant_digits <arg> - (Optional) Number of digits to display from 0 to 3. The default is 3.

-file <arg> - (Optional) Write the report into the specified file. The specified file will be overwritten if one already exists, unless -append is also specified.

Note: If the path is not specified as part of the file name, the file will be written into the current working directory, or the directory from which the tool was launched.

-append - (Optional) Append the output of the command to the specified file rather than overwriting it.

Note: The -append option can only be used with the -file option.

-return_string - (Optional) Directs the output to a Tcl string rather than to the standard output. The Tcl string can be captured by a variable definition and parsed or otherwise processed.

Note: This argument cannot be used with the -file option.

-sort_by [ port | clock ] - (Optional) Sorting order. Valid values are clock or port. The default is to sort the report by clocks.

-name <arg> - (Optional) The name of the Datasheet report view to display in the Vivado IDE when run in GUI mode. If the name has already been used in an open Report view, that view will be closed and a new report opened.

-show_all_corners - (Optional) Report all process corners.

-show_oe_timing - (Optional) Report max and min values for paths using output enable, showing both ON and OFF states.

-group [get_ports {xxx1 xxx2 ... xxxN}] - (Optional) Allows you to define your own custom group of ports for analysis. This option requires a list of port objects as returned by the get_ports command. The first port in the list will be used as the reference for skew calculation. In most cases, this will be a clock port of a source synchronous output interface. Multiple groups can be specified, each with its own reference clock port. When -group is not specified the timer automatically finds the group of output ports based on the launching clock, and reports skew based on that clock.

-rpx <arg> - (Optional) Specify the file name and path of the report file (RPX) to write. This is different from writing the report results to a file using the -file argument. The RPX file is an interactive report that contains all the report information and can be reloaded into memory in the Vivado Design Suite using the open_report command. You should add a . rpx file extension to the specified file name, as the Vivado tool will not automatically assign a file extension.

Note: If the path is not specified as part of the file name, the file will be written into the current working directory, or the directory from which the tool was launched.
-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.


The following example returns the datasheet sorted by ports, for all process corners:

report_datasheet -sort_by port -show_all_corners

The following example reports the datasheet with the skew calculation for two groups of ports, with the first port of each group providing the reference for the skew calculation for that group. In this example, CLK0OUT is the forwarded clock for DATA0-4 and CLK1OUT is the forwarded clock for DATA4-7:

report_datasheet -file ds.txt -group [get_ports \
   -group [get_ports {CLK1OUT DATA4 DATA5 DATA6 DATA7}]

See Also