我在官网上找到了关于cell的解释:
(1)feed
(2)R_feed解释:
(3)p_and_r_notes(lib中并无此单元):
The Layer NWELL overlaps the cell P&R Boundary with maximal 1.50um.
The overlapping NWELL regions of the placed cells build a common NWELL region per row and fulfill automatically the NWELL design rules if a cell is placed at a row end.
This NWELL overlapping per cell has to be considered if the digital cells are placed nearby a memory IP block border:
It is not allowed that any layer cross the IP block P&R Boundary ( same size as IP core definition layer LOCKED). Therefore it is needed to define a HALO region of at least 1.50um around a placed memory IP block which prevents a digital cell placement in this HALO region which would cause a crossing of the digital cells' NWELL with the memory IP layer LOCKED.
(4)feed_cap
上面phy cell中那些用于 addfiller?那些用于addmetal?那些用于endcap?那些用于welltap?
我自己的理解是feed用于addfiller ,R_feed用于add metal 。但是我不知道需不需要加welltap和endcap。
希望大牛指点一下