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Stagger outputs of dff_buf

This commit is contained in:
Matt Guthaus 2018-11-28 09:48:16 -08:00
parent d2ca2efdbe
commit ea6abfadb7
1 changed files with 12 additions and 7 deletions
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19
compiler/modules/dff_buf.py
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@ -102,8 +102,7 @@ class dff_buf(design.design):
mid_x_offset = 0.5*(a1_pin.cx() + q_pin.cx())
mid1 = vector(mid_x_offset, q_pin.cy())
mid2 = vector(mid_x_offset, a1_pin.cy())
self.add_path("metal3",
[q_pin.center(), mid1, mid2, a1_pin.center()])
self.add_path("metal3", [q_pin.center(), mid1, mid2, a1_pin.center()])
self.add_via_center(layers=("metal2","via2","metal3"),
offset=q_pin.center())
self.add_via_center(layers=("metal2","via2","metal3"),
@ -114,8 +113,10 @@ class dff_buf(design.design):
# Route inv1 z to inv2 a
z1_pin = self.inv1_inst.get_pin("Z")
a2_pin = self.inv2_inst.get_pin("A")
mid_point = vector(z1_pin.cx(), a2_pin.cy())
self.add_path("metal1", [z1_pin.center(), mid_point, a2_pin.center()])
mid_x_offset = 0.5*(z1_pin.cx() + a2_pin.cx())
mid1 = vector(mid_x_offset, z1_pin.cy())
mid2 = vector(mid_x_offset, a2_pin.cy())
self.add_path("metal1", [z1_pin.center(), mid1, mid2, a2_pin.center()])
def add_layout_pins(self):
@ -150,16 +151,20 @@ class dff_buf(design.design):
height=din_pin.height())
dout_pin = self.inv2_inst.get_pin("Z")
dout_pos = dout_pin.center() - vector(0,2*self.m2_pitch)
self.add_layout_pin_rect_center(text="Q",
layer="metal2",
offset=dout_pin.center())
offset=dout_pos)
self.add_path("metal1", [dout_pin.center(), dout_pos])
self.add_via_center(layers=("metal1","via1","metal2"),
offset=dout_pin.center())
dout_pin = self.inv2_inst.get_pin("A")
dout_pin = self.inv1_inst.get_pin("Z")
dout_pos = dout_pin.center() + vector(0,2*self.m2_pitch)
self.add_layout_pin_rect_center(text="Qb",
layer="metal2",
offset=dout_pin.center())
offset=dout_pos)
self.add_path("metal1", [dout_pin.center(), dout_pos])
self.add_via_center(layers=("metal1","via1","metal2"),
offset=dout_pin.center())