route_design_tieoff_to_shapes的含义。

spima

route_design_tieoff_to_shapes "auto|stripe|ring|followpin|powergroudpin"，这个选项是啥意思？

手册相关解释：

route_design_tieoff_to_shapes
​route_design_tieoff_to_shapes "auto | stripe | ring | followpin | powergroundpin"
Default: auto
Data_type: string, read/write
Specifies the target to special wire shapes or target instance pin for tie net connection.
Specify one of the following arguments:
Last Updated in February 2022 3462 Product Version 21.13
Innovus Stylus Common UI Text Command Reference
Route Commands and Attributes
auto: Specify auto to target special wire shapes, including stripe, ring, and standard cell followpin.
stripe: Specify stripe to target stripes only. Stripes are the special wiring used for creating the power mesh.
ring: Specify ring to target only rings. The power mesh along the macro boundary forms a ring. If it is in a macro
placed in the design, only exposes power ring-pin shapes. When power stripes are added across the macro, they
connect to each side of the ring-pin but do not go inside the ring.
followpin: Specify followpin to target standard cell followpin only. Followpin is the special wiring used for
connecting standard cells to power mesh.
powergroundpin: Specify powergroundpin to target the power and ground pin of the instances only.
auto powergroundpin: Specifies the target to special wire shapes or target instance pin for tie net.
Note: The target shapes can be specified together. The value auto can only be specified with powergroundpin, since the
other values stripe, ring, and followpin are included in auto.
For example,
route_design_tieoff_to_shapes "followpin stripe" signifies that it can tie to followpin or stripe.
route_design_tieoff_to_shapes "followpin powergroundpin" signifies that it can tie to followpin or power
ground pin
route_design_tieoff_to_shapes "stripe powergroundpin" signifies that it can tie to stripe or power ground pin
Note: Using "auto stripe" is not recommended as stripe is included by auto.

问题：tie net指的是哪些？如果tie net指的是tiehi,tielow，为什么要连接到followpin等等的上面，这些net由TieCell驱动的吧，又不直接连接到followpin等上面。
谁能解释一下？

jiangnaner

不错

spima

jiangnaner 发表于 2024-2-22 19:19
不错

灌得一手好水。