set_property CLOCK_BUFFER_TYPE BUFG [get_nets netName] 最大扇出约束::使用(* max_fanout = “N”*)来约束扇出高的寄存器,N表示最大的扇出值,也可在综合选项中指定fanout_limit。编辑于 2023-06-05 09:55・IP 属地北京 内容所属专栏 FPGA/VerilogHDL 基于Xilinx-FPGA平台的设计开发相关 订阅专栏 ...
例如,如果-bufg选项设置为12,并且在RTL中实例化了三个BUFG,则Vivado综合工具最多可以推断出另外九个BUFG。 -fanout_limit:指定信号在开始复制逻辑之前必须驱动的负载数。此全局限制是一般指南,当工具确定有必要时,可以忽略该选项。 -retiming :布尔选项通过跨组合门或LUT自动移动寄存器(寄存器平衡)来提供选项,以提高时...
Agenda •SynthesisTimeReduction•AreaReduction•SpeedIncrease Note:PleaserefertothecorrespondingsectionsinISEHelpformoreextensiveinformationonhowtoimproveXSTresults XSTSynthesisStrategies-2www.xilinx.com SynthesisTimeReduction SynthesisTimeReduction •Twomaintechniquescanbeusedinordertoreducesynthesistime:–Incremental...
例如: See Reducing Congestion read_checkpoint -incremental routed.dcp -reuse_objects [all_rams] -fix_objects [all_rams] (this page) X21581-091818 优化高扇出网络 在 RTL 内或借助如下逻辑优化明确地使用基于层级的寄存器复制: opt_design –merge_equivalent_drivers –hier_fanout_limit 512 ...
例如: See Reducing Congestion read_checkpoint -incremental routed.dcp -reuse_objects [all_rams] -fix_objects [all_rams] (this page) X21581-091818 优化高扇出网络 在 RTL 内或借助如下逻辑优化明确地使用基于层级的寄存器复制: opt_design –merge_equivalent_drivers –hier_fanout_limit 512 ...
<name>replicate_high_fanout_registers</name> Replicate registers to limit register fanout to maxFan. Run after synthesis </proc> <proc> <name>report_all_primitives</name> Reports all primitives (LIB_CELL) in the design </proc> <proc> <name>report_cells_fanout</name> Report the fanout of...
Replicate registers to limit register fanout to maxFan. Run after synthesis </proc> <proc> <name>report_all_primitives</name> Reports all primitives (LIB_CELL) in the design </proc> <proc> <name>report_cells_fanout</name> Report the fanout of cells matching a REF_NAME pattern </proc...
Platform-based FPGAs solve some of the big issues that limit the development of ASIC SoCs by addressing IP integration issues, as shown in Figure 4. The Xilinx IP immersion technology max- imizes performance and density by providing a fixed and proven structure to integrate hard and soft IP...
all_fanout all_ffs all_hsios all_inputs all_latches all_outputs all_rams all_registers apply_bd_automation apply_board_connection apply_hw_ila_trigger archive_project assign_bd_address auto_detect_xpm boot_hw_device calc_config_time can_resolve_reference check_syntax ...
XILINX, the Xilinx logo, the Brand Window, and other designated brands included herein are trademarks of Xilinx, Inc. All other trademarks are the property of their respective owners. This document includes all four modules of the Spartan®-II FPGA data sheet. Module 1: Introduction and ...