Quartus中的路径约束

Hi,

You may use the set_max_skew constraint to perform maximum allowable skew analysis between sets of registers or ports.

If you want to set the maximum allowable delay, you may use set_max_delay to specifies a maximum delay exception for a given path.

Thanks.

Best regards,

KhaiY

hi，

​

除了约束skew，怎样固定布线路径？​

Hi,

You may set a region for placement and routing but not a specific routing path. To lock the region, you may use logic lock.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug-qpp-design-optimization.pdf Chapter 6.5.1. Creating Logic Lock Assignments with Tcl commands

Thanks.

你好，

我能够把我的输出寄存器给约束位置吗？​

使用什么语法约束？有没有例子？​

Hi,

You can create the Logic Lock region using the GUI or qsf assignment.

For example,

1) use the assignment below to create a new placement region with bounding box

coordinates X46 Y36 X65 Y49:

set_instance_assignment -name PLACE_REGION "X46 Y36 X65 Y49" -to <node names>

2) use the assignment below to create a routing region with bounding box coordinates X46 Y36 X65 Y49: set_instance_assignment -name ROUTE_REGION -to "X46 Y36 X65 Y49"

Please note that all instances with a routing region assignment must have a respective placement region; the routing region must fully contain the placement region.

Thanks.

Best regards,

KhaiY

Hi,

Do you have any updates?

Thanks.

Best regards,

KhaiY