I want to change M3 to a wide metal. Dont want to use NON-DEFAULT RULES because I want to have all M3 3.3um wide. I tried and it leaves some M3 as DEFAULT where ever there is congestion.
Only info I have is that M3 WIDTH=3.3 and MIN SPACING = 3.3 , INTRA SPACING = 3.3
What will be the correct number to define PITCH, OFFSET and SPACING RANGE. So that I will no warings for trial route and identify congestion before detail route.
LAYER METAL3 TYPE ROUTING ; DIRECTION HORIZONTAL ; PITCH X ; OFFSET X ; WIDTH 3.3 ; SPACING 3.3 ; SPACING X RANGE 15 10000 ; AREA X ; ANTENNAAREARATIO 100 ; ANTENNADIFFAREARATIO PWL ( ( 1 100 ) ( 10 1000 ) ( 100 10000 ) ) ;END METAL3
This is not something that's typically done, but you'll have to check your process Design Rule Manual for the spacing range details. For the PITCH and OFFSET, you'll have to make sure that these allow your new M3 to line up properly with the other layer pitches and do not lead to DRC violations.