Altera Quartus II Scripting Manuel d'utilisateur Page 571
- Page / 634
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Chapter 3: Tcl Packages & Commands 3–441
sta
© July 2013 Altera Corporation Quartus II Scripting Reference Manual
report_metastability
Usage
report_metastability [-append] [-file <name>] [-panel_name <name>] [-stdout]
Options
-append: If output is sent to a file, this option appends the result to that file.
Otherwise, the file will be overwritten
-file <name>: Sends the results to an ASCII or HTML file. Depending on the extension
-panel_name <name>: Sends the results to the panel and specifies the name of the new
panel
-stdout: Send output to stdout, via messages. You only need to use this option if you
have selected another output format, such as a file, and would also like to receive
messages.
Description
Report can be directed to the Tcl console ("-stdout", default), a file ("-file"), the TimeQuest graphical
interface ("-panel_name"), or any combination of the three.
The report_metastability function can be used to estimate the robustness of asynchronous transfers in your
design.
Background
Synchronization register chains should be used when transferring data between unrelated clock domains
to greatly reduce the probability of the captured data signal becoming metastable. A synchronization
register chain is a sequence of registers with the same clock, that is driven by a pin, or logic from an
unrelated clock domain. The output of all but the last register in the chain must connect only to the next
register, either directly or indirectly through logic.
When a register is metastable, its output hovers at a voltage between high and low for a length of time
beyond the normal Tco for the register. The design can fail if subsequent registers that use this metastable
signal latch different values. Therefore, it is important to properly synchronize data signals to prevent
such occurrences.
Output
The report_metastability function generates a list of synchronization register chains found in the design,
and can provide estimates of the Mean Time Between Failures (MTBF) of each chain. The design MTBF is
an estimate of the overall robustness of the design, computed from the MTBF results from all
synchronization chains with calculated MTBFs. The design MTBF metric is reported only when the design
meets timing. Therefore, it is important to fully timing constrain your design.
The typical MTBF result assumes typical silicon characteristics for the selected device speed grade, with
nominal operating conditions.
The worst case MTBF result uses the worst case silicon characteristics for the selected device speed grade,
with worst case operating conditions.
- 101 Innovation Drive 1
- San Jose, CA 95134 1
- MNL-Q2101904-9.1.1 2
- Contents 3
- Contents v 5
- Contents vii 7
- Contents ix 9
- Contents xi 11
- Contents xiii 13
- Contents xv 15
- About this Reference Manual 17
- Typographic Conventions 18
- Reference Manual 19
- Command-Line Executables 20
- Overview 21
- Tcl Commands 23
- Quartus_sta 24
- Quartus_staw 24
- Tcl Console 24
- Related Documentation 25
- 2. Command-line Executables 27
- --generate_hc_files 33
- --generate_hc_pll_delay 33
- --hc_min_archive 34
- --hc_ready 34
- --hc_review 35
- --post_map[=on 40
- --update_mif 41
- --vqm[=<.vqm file>] 41
- --write_rcf_for_vqm[=on 41
- --operation=<pb 45
- --option=<filename> 45
- --voltage=<voltage> 46
- String Description 47
- Examples 50
- --post_syn[=on 52
- --rtl[=on 52
- --hc[=on 52
- --post_fit[=on 52
- --board_symbol[=on 55
- --board_timing[=on 55
- --format=<NONE> 55
- --gen_script=<NONE> 56
- --gen_testbench 56
- --glitch_filtering[=on 56
- --resynthesis[=on 56
- --simulation[=on 57
- --timing_analysis[=on 57
- --vcd_type=<NONE> 59
- --check_ios 61
- --check_netlist 61
- --fmax=<time unit> 62
- --incremental_signaltap 62
- --inner_num=<value> 62
- --io_smart_recompile 63
- --one_fit_attempt[=on 63
- --part=<device part> 63
- --seed=<value> 64
- --signalprobe 64
- --tdc[=on 64
- --compress 67
- -a=<action to perform> 68
- --enumerate_hardware 70
- --loquacious 70
- --lib_path=<path> 74
- --parallel[=on 74
- --part=<device> 74
- --partition=<NONE> 74
- --source=<source file> 75
- --update_wysiwyg_parameters 75
- --verilog_macro=<NONE> 75
- --haltcc 78
- --initcfg 78
- --estimate_power[=on 81
- --no_input_file 82
- --archive 85
- --determine_smart_action 86
- --prepare 92
- --qboard 92
- --qinstall 93
- --qslave 93
- --relcon 94
- --restore 94
- --simlib_comp 95
- -g[=on 98
- --bank=<bank index> 98
- --grouping[=on 99
- --sso_inputs[=on 99
- Value Description 102
- --report_script=<NONE> 107
- --sdc=<NONE> 107
- --speed=<NONE> 107
- --voltage=<value_in_mV> 108
- --create_signaltap_hdl_file 110
- -c=<revision name> 110
- --combined_model[=on 114
- --create_timing_netlist 114
- --delay_annotation_only 114
- --tao[=<.tao file>] 116
- --tao_summary 116
- --tco=<time unit> 116
- --th=<time unit> 116
- --timing_analysis_only 116
- --tpd=<time unit> 117
- --tristate 117
- --tsu=<time unit> 117
- --zero_ic_delays 117
- -f=<argument file> 118
- --help[=<option 119
- --lower_priority 119
- --version 119
- Common Options 120
- Return Code Description 121
- 0 Execution was successful 121
- --rev=<revision name> 122
- -p[=on 123
- Settings File Options 124
- 2. Compiler database 127
- -t=<script file> 128
- --script=<script file> 128
- Tcl Options 129
- ■ quartus_tan 141
- Description 145
- ■ quartus 159
- ■ quartus_cdb 159
- <position>: Position 182
- <device>: Device name 225
- <family>: Family name 226
- <part>: Part name 227
- ■ quartus_sh 234
- ■ quartus_sta 234
- ■ quartus_stp 254
- # Close device 279
- $bus_name 298
- # Disables natural bus naming 298
- <command>: Command 311
- ■ export_assignments 317
- ## Close the project if open 350
- project_close 350
- # Using wildcards 358
- TSU_REQUIREMENT 2ns 368
- ■ quartus_map 401
- as an absolute time shift 418
- ■ quartus_sim 474
- Example 12 479
- Example 13 479
- Example 14 479
- Example 15 479
- Example 16 479
- Example 3 490
- Example 4 490
- Groups the specified signals 494
- -phase] [-rise] 523
- Option Destination Tool 551
- -chip Chip Planner 551
- -rpe Resource Property Editor 551
- -tmv Technology Map Viewer 551
- 0.100 -detail full_path 570
- (empty) Unknown transition 584
- R Rising output 584
- F Falling output 584
- Reports unconstrained paths 591
- MHz MegaHertz 625
- GHz GigaHertz 625
- Time Unit Description 625
Produits connexes et manuels pour Instruments de mesure Altera Quartus II Scripting
Instruments de mesure Altera Cyclone II EP2C35 PCI Development Board Manuel d'utilisateur
(50 pages)
(50 pages)
Instruments de mesure Altera Cyclone II FPGA Starter Development Board Manuel d'utilisateur
(56 pages)
(56 pages)
Instruments de mesure Altera Nios Development Board Cyclone II Edition Manuel d'utilisateur
(64 pages)
(64 pages)
Panasonic TXD32LF72F manuali
Manuali dei proprietari e guide per l'utente per TV a cristalli liquidi Panasonic TXD32LF72F.
We fornisce 2 manuali pdf Panasonic TXD32LF72F per scaricare gratuitamente in base al tipo di documento: Istruzioni per gli Interventi
Commentaires sur ces manuels