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Modify dff_buf to stagger Q and Qb outputs.

This commit is contained in:
Matt Guthaus 2018-11-28 10:43:11 -08:00
parent 25611fcbc1
commit 410115e830
1 changed files with 11 additions and 11 deletions
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22
compiler/modules/dff_buf.py
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@ -114,9 +114,9 @@ class dff_buf(design.design):
z1_pin = self.inv1_inst.get_pin("Z")
a2_pin = self.inv2_inst.get_pin("A")
mid_x_offset = 0.5*(z1_pin.cx() + a2_pin.cx())
mid1 = vector(mid_x_offset, z1_pin.cy())
self.mid_qb_pos = 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()])
self.add_path("metal1", [z1_pin.center(), self.mid_qb_pos, mid2, a2_pin.center()])
def add_layout_pins(self):
@ -151,22 +151,22 @@ 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)
mid_pos = dout_pin.center() + vector(self.m1_pitch,0)
q_pos = mid_pos - vector(0,self.m2_pitch)
self.add_layout_pin_rect_center(text="Q",
layer="metal2",
offset=dout_pos)
self.add_path("metal1", [dout_pin.center(), dout_pos])
offset=q_pos)
self.add_path("metal1", [dout_pin.center(), mid_pos, q_pos])
self.add_via_center(layers=("metal1","via1","metal2"),
offset=dout_pin.center())
offset=q_pos)
dout_pin = self.inv1_inst.get_pin("Z")
dout_pos = dout_pin.center() + vector(0,2*self.m2_pitch)
qb_pos = self.mid_qb_pos + vector(0,self.m2_pitch)
self.add_layout_pin_rect_center(text="Qb",
layer="metal2",
offset=dout_pos)
self.add_path("metal1", [dout_pin.center(), dout_pos])
offset=qb_pos)
self.add_path("metal1", [self.mid_qb_pos, qb_pos])
self.add_via_center(layers=("metal1","via1","metal2"),
offset=dout_pin.center())
offset=qb_pos)