luke
/
OpenRAM
mirror of https://github.com/VLSIDA/OpenRAM.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Playing around with pnand2 pin spacing rules

This commit is contained in:
mrg 2020-06-15 10:07:00 -07:00
parent 6e0008403e
commit 355474ce2c
1 changed files with 11 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
compiler/pgates/pnand2.py
View File

@ -176,11 +176,10 @@ class pnand2(pgate.pgate):
def route_inputs(self):
""" Route the A and B inputs """
# Top of NMOS drain
bottom_pin = self.nmos1_inst.get_pin("D")
# active contact metal to poly contact metal spacing
active_contact_to_poly_contact = bottom_pin.uy() + self.m1_space + 0.5 * contact.poly_contact.second_layer_height
active_contact_to_poly_contact = bottom_pin.uy() + self.route_layer_space + 0.5 * contact.poly_contact.second_layer_height
# active diffusion to poly contact spacing
# doesn't use nmos uy because that is calculated using offset + poly height
active_top = self.nmos1_inst.by() + self.nmos1_inst.mod.active_height
@ -196,8 +195,15 @@ class pnand2(pgate.pgate):
"A",
position="center")
# self.inputB_yoffset = self.inputA_yoffset + self.m3_pitch
self.inputB_yoffset = self.output_yoffset - self.route_layer_pitch
self.inputB_yoffset = self.inputA_yoffset + 2 * self.m3_pitch
# # active contact metal to poly contact metal spacing
# active_contact_to_poly_contact = self.output_yoffset - self.route_layer_space - 0.5 * contact.poly_contact.second_layer_height
# active_bottom = self.pmos1_inst.by()
# active_to_poly_contact = active_bottom - self.poly_to_active - 0.5 * contact.poly_contact.first_layer_height
# active_to_poly_contact2 = active_bottom - drc("contact_to_gate") - 0.5 * self.route_layer_width
# self.inputB_yoffset = min(active_contact_to_poly_contact,
# active_to_poly_contact,
# active_to_poly_contact2)
# This will help with the wells and the input/output placement
self.route_input_gate(self.pmos2_inst,
@ -210,7 +216,7 @@ class pnand2(pgate.pgate):
""" Route the Z output """
# One routing track layer below the PMOS contacts
route_layer_offset = 0.5 * self.route_layer_width + self.route_layer_space
route_layer_offset = 0.5 * contact.poly_contact.second_layer_height + self.route_layer_space
self.output_yoffset = self.pmos1_inst.get_pin("D").by() - route_layer_offset