Organize top-level files into subdirs.

2026-09-02 11:08:01 +02:00 · 2018-02-09 10:25:24 -08:00
parent 5aa92a6549
commit 7100d6f904
40 changed files with 7 additions and 10 deletions
@@ -0,0 +1,76 @@
+import design
+import debug
+from tech import drc
+from vector import vector
+from precharge import precharge
+
+
+class precharge_array(design.design):
+    """
+    Dynamically generated precharge array of all bitlines.  Cols is number
+    of bit line columns, height is the height of the bit-cell array.
+    """
+
+    def __init__(self, columns, size=1):
+        design.design.__init__(self, "precharge_array")
+        debug.info(1, "Creating {0}".format(self.name))
+
+        self.columns = columns
+
+        self.pc_cell = precharge(name="precharge", size=size)
+        self.add_mod(self.pc_cell)
+
+        self.width = self.columns * self.pc_cell.width
+        self.height = self.pc_cell.height
+
+        self.add_pins()
+        self.create_layout()
+        self.DRC_LVS()
+
+    def add_pins(self):
+        """Adds pins for spice file"""
+        for i in range(self.columns):
+            self.add_pin("bl[{0}]".format(i))
+            self.add_pin("br[{0}]".format(i))
+        self.add_pin("en")
+        self.add_pin("vdd")
+
+    def create_layout(self):
+        self.add_insts()
+
+        self.add_layout_pin(text="vdd",
+                            layer="metal1",
+                            offset=self.pc_cell.get_pin("vdd").ll(),
+                            width=self.width,
+                            height=drc["minwidth_metal1"])
+        
+        self.add_layout_pin(text="en",
+                            layer="metal1",
+                            offset=self.pc_cell.get_pin("clk").ll(),
+                            width=self.width,
+                            height=drc["minwidth_metal1"])
+        
+
+    def add_insts(self):
+        """Creates a precharge array by horizontally tiling the precharge cell"""
+        for i in range(self.columns):
+            name = "pre_column_{0}".format(i)
+            offset = vector(self.pc_cell.width * i, 0)
+            inst=self.add_inst(name=name,
+                          mod=self.pc_cell,
+                          offset=offset)
+            bl_pin = inst.get_pin("bl")
+            self.add_layout_pin(text="bl[{0}]".format(i),
+                                layer="metal2",
+                                offset=bl_pin.ll(),
+                                width=drc["minwidth_metal2"],
+                                height=bl_pin.height())
+            br_pin = inst.get_pin("br") 
+            self.add_layout_pin(text="br[{0}]".format(i),
+                                layer="metal2",
+                                offset=br_pin.ll(),
+                                width=drc["minwidth_metal2"],
+                                height=bl_pin.height())
+            self.connect_inst(["bl[{0}]".format(i), "br[{0}]".format(i),
+                               "en", "vdd"])
+