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Adjust ptx positions in precharge to be under the bl rail

This commit is contained in:
Matt Guthaus 2018-11-09 10:26:15 -08:00
parent ac7229f8d3
commit c01effc819
1 changed files with 6 additions and 4 deletions
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10
compiler/pgates/precharge.py
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@ -110,11 +110,13 @@ class precharge(pgate.pgate):
# Compute the other pmos2 location, but determining offset to overlap the
# source and drain pins
self.overlap_offset = self.pmos.get_pin("D").ll() - self.pmos.get_pin("S").ll()
overlap_offset = self.pmos.get_pin("D").ll() - self.pmos.get_pin("S").ll()
# This is how much the contact is placed inside the ptx active
contact_xdiff = self.pmos.get_pin("S").lx()
# adds the lower pmos to layout
#base = vector(self.width - 2*self.pmos.width + self.overlap_offset.x, 0)
self.lower_pmos_position = vector(max(self.bitcell.get_pin(self.bitcell_bl).lx(), self.well_enclose_active),
bl_xoffset = self.bitcell.get_pin(self.bitcell_bl).lx()
self.lower_pmos_position = vector(max(bl_xoffset - contact_xdiff, self.well_enclose_active),
self.pmos.active_offset.y)
self.lower_pmos_inst.place(self.lower_pmos_position)
@ -123,7 +125,7 @@ class precharge(pgate.pgate):
self.upper_pmos1_pos = self.lower_pmos_position + vector(0, ydiff)
self.upper_pmos1_inst.place(self.upper_pmos1_pos)
upper_pmos2_pos = self.upper_pmos1_pos + self.overlap_offset
upper_pmos2_pos = self.upper_pmos1_pos + overlap_offset
self.upper_pmos2_inst.place(upper_pmos2_pos)
def connect_poly(self):