Altera Quartus II Scripting Manuale Utente Scaricare il pdf (Pagina 569)

100

101

Chapter 3: Tcl Packages & Commands 3–439

sta

The return value of this command is a two-element list. The first number is the number of paths found in

the analysis. The second is the worst-case slack, in terms of the current default time unit.

The "RF" column in the report output uses a two-letter symbol to indicate the rise/fall transition that

occurs at that point in the path.

Possible "RF" values are:

The "Type" column in the report uses a symbol to indicate what type of delay occurs at that point in the

path.

Possible "Type" values are:

Example

project_open my_project

create_timing_netlist

read_sdc

update_timing_netlist

# create max skew constraints

set_max_skew -from [get_ports data_ports[*]] -to [get_keepers *] 0.200

set_max_skew -from [get_keepers *] -to [get_ports output_ports[*]] 0.100

# show worst 10 paths for each earliest and latest arrival results

# per max_skew assignment assuming that their slack is less than 0.100

report_max_skew -panel_name "Report Max Skew" -npaths 10 -less_than_slack \

Value Description

(empty) Unknown transition

R Rising output

F Falling output

RR Rising input, rising output

RF Rising input, falling output

FR Falling input, rising output

FF Falling input, falling output

Value Description

CELL Cell delay

COMP PLL clock network compensation delay

IC Interconnect delay

iExt External input delay

LOOP Lumped combinational loop delay

oExt External output delay

RE Routing element (only for paths generated with the

-show_routing option)

uTco Register micro-Tco time

uTsu Register micro-Tsu time

uTh Register micro-Th time

1 2 ... 564 565 566 567 568 569 570 571 572 573 574 ... 633 634

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