摘要： 1. -----> D ----> 的周期 | | |-<- T -<-|2. sequential -> timing; combinational -> logic;3. output can not directly use the input signal4. test 2 if one register, .v .sv case para synthesis ; full; unique case in sv 阅读全文

摘要： set_clock_latency models board-level clock delays most useful is for I/O constraints,derive_clock_uncertainty calls out individual set_clock_uncertainty for every clock transferderive_clock_uncertainty’s individual calls of set_clock_uncertainty occur when the timing netlist is being updated, which 阅读全文

摘要： periodsetup/holdapplied toadd4create_clock√√nodesecond assignment will be ignoredCREATE_GENERATED_CLOCK√√nodeignore the new constraint and issue a warningDERIVE_PLL_CLOCKS√√nodeSET_INPUT_DELAY/SET_OUTPUT_DELAY√node(external)there is another external register connected to the portoverride the first t 阅读全文

摘要： periodsetup/holduncertaintyapplied toaddcreate_clock√√nodesecond assignment will be ignoredCREATE_GENERATED_CLOCK√√nodeignore the new constraint and issue a warningDERIVE_PLL_CLOCKS√√nodeIf a create_clock or create_generated_clock apply a clock to a node that already has a clock on it from a previou 阅读全文

摘要： period setup/hold uncertainty applied to add create_clock √ √ node second assignment will be ignored ... 阅读全文

摘要： SECTION 4: THE TIMEQUEST GUI .................................................................................................................... 96ENTERING SDC CONSTRAINTS FROM THE GUI........................................................................................................ 96Method # 阅读全文

摘要： SET_MULTICYCLE_PATH .......................................................................................................................................... 80-from/-rise_from/-fall_from - These options control the source-to/-rise_to/-fall_to -These options control the destinationvalues increase, 阅读全文

摘要： 1. vsim -c do run.dothis output is : # vsim -c do run.do # ** Error: (vsim-19) Failed to access library 'run' at "run".# No such file or directory. (errno = ENOENT)# Error loading designnote the correct command syntax is vsim -c -do run.do, DO NOT neglect the - 阅读全文

摘要： 7. Checking Partition Quality7.1 Incremental Compilation Advisor7.2 Design Partition Planner7.3 Viewing Design Partition Planner and Floorplan Side-by-Side7.4 Partition Statistics Report7.5 Report Partition Timing in the TimeQuest Timing Analyzer7.6 Check if Partition Assignments Impact the ... 阅读全文

摘要： 6. Design Partition Guidelines for Third-Party IP Delivery6.1 Allocate Logic Resources6.2 Allocate Global Routing Signals and Clock Networks if Required6.3 Assign Virtual Pins6.4 Perform Timing Budgeting if Required6.5 Drive Clocks Directly6.6 Recreate PLLs for Lower-Level Partitions if Requ... 阅读全文