参数资料
型号: SW-QUARTUS-SE-FIX
厂商: Altera
文件页数: 86/136页
文件大小: 0K
描述: QUARTUS II ANNUAL SUBSCRIPTION
应用说明: Software Licensing App Note
产品培训模块: Quartus II Design Software
标准包装: 1
类型: 设计软件
适用于相关产品: Altera 设备
产品目录页面: 605 (CN2011-ZH PDF)
其它名称: 544-1247
FIXEDPC
C HAPTER 5: T IMING A NALYSIS AND D ESIGN O PTIMIZATION
T IMING C LOSURE
Optimize for fitting (physical synthesis for density) : Options to
reduce combinational logic elements and registers in a design by
eliminating duplicate nodes and by mapping logic to unused memory
blocks.
The Quartus II software cannot perform these netlist optimizations for
fitting and physical synthesis on a back-annotated design. In addition, if you
use one or more of these netlist optimizations on a design, and then
back-annotate the design, you must generate a Verilog Quartus Mapping
File ( .vqm ) if you wish to save the results. The Verilog Quartus Mapping File
must be used in place of the original design source code in future
compilations.
f
For Information About
Achieving timing closure using netlist
optimizations
Refer To
Netlist Optimizations and Physical
Synthesis chapter in volume 2 of the
Quartus II Handbook
Using LogicLock Regions to Preserve
Timing
You can use LogicLock regions to achieve timing closure by analyzing your
design in the Chip Planner, and then constraining critical logic in LogicLock
regions. Defining hierarchical LogicLock regions can give you more control
over the placement and performance of modules or groups of modules. You
can use the LogicLock feature on individual nodes, for instance, by
assigning the nodes along the critical path to a LogicLock region.
Successfully improving performance by using LogicLock regions requires a
detailed understanding of the critical paths in your design. Once you have
implemented LogicLock regions and attained the desired performance,
back-annotate the contents of the region to lock the logic placement.
A LTERA C ORPORATION
I NTRODUCTION TO THE Q UARTUS II S OFTWARE
77
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SWR-10-12 制造商:Raxxess 功能描述:Wall Mount 10RU Hinged Rack with 12" Usable Depth