set_property CLOCK_DEDICATED_ROUTE BACKBONE

"set_property" 是 Cadence 或其他电子设计自动化 (EDA) 软件中的一个命令，用于设置设计规则属性。在这个特定的情况下，`CLOCK_DEDICATED_ROUTE` 是一种属性，它指定与时钟信号关联的路由策略。`BACKBONE` 指的是一种高级别网络配置，通常是指系统内部的主要高速数据传输路径，特别是对于需要低延迟、高带宽的时钟信号。

当你运行这个命令时，它的作用可能是将某个特定时钟信号的路由限制在称为 "backbone" 的专用高速路径上，以优化时钟树性能，减少布线延迟，并确保信号质量。这在高性能集成电路设计中是一个常见的实践，因为良好的时钟网络稳定性对整体系统功能至关重要。

相关问题

[Place 30-575] Sub-optimal placement for a clock-capable IO pin and MMCM pair. If this sub optimal condition is acceptable for this design, you may use the CLOCK_DEDICATED_ROUTE constraint in the .xdc file to demote this message to a WARNING. However, the use of this override is highly discouraged. These examples can be used directly in the .xdc file to override this clock rule. < set_property CLOCK_DEDICATED_ROUTE BACKBONE [get_nets sys_clk_IBUF] > sys_clk_IBUF_inst (IBUF.O) is locked to IOB_X1Y74 instance_name/inst/mmcm_adv_inst (MMCME2_ADV.CLKIN1) is provisionally placed by clockplacer on MMCME2_ADV_X1Y2 The above error could possibly be related to other connected instances. Following is a list of all the related clock rules and their respective instances. Clock Rule: rule_mmcm_bufg Status: PASS Rule Description: An MMCM driving a BUFG must be placed on the same half side (top/bottom) of the device instance_name/inst/mmcm_adv_inst (MMCME2_ADV.CLKFBOUT) is provisionally placed by clockplacer on MMCME2_ADV_X1Y2 and instance_name/inst/clkf_buf (BUFG.I) is provisionally placed by clockplacer on BUFGCTRL_X0Y31

Based on the provided information, it seems that there is a sub-optimal placement for a clock-capable IO pin and MMCM pair in your design. If this condition is acceptable, you can use the CLOCK_DEDICATED_ROUTE constraint in the .xdc file to demote the message to a WARNING. However, using this override is highly discouraged.

To override this clock rule, you can add the following line in the .xdc file:

set_property CLOCK_DEDICATED_ROUTE BACKBONE [get_nets sys_clk_IBUF]

Please note that this error could possibly be related to other connected instances. The related clock rule "rule_mmcm_bufg" seems to be passing, but it's important to review all the clock rules and their respective instances to ensure proper placement.

If you have any further questions or need additional assistance, feel free to ask.

set_property CLOCK_DEDICATED_ROUTE FALSE [get_nets clk_wiz_main_inst/inst/clk_in1_clk_wiz_main]

这是一条设置时钟约束的命令，将时钟网络"clk_wiz_main_inst/inst/clk_in1_clk_wiz_main"的CLOCK_DEDICATED_ROUTE属性设置为FALSE。这个属性表示是否要求时钟网络完全专用于时钟传输。通过将其设置为FALSE，允许时钟网络与其他信号共享路由资源。