def get_fill_size(self,
top_layer: int,
fill_config: FillConfigType,
*,
include_private: bool = False,
half_blk_x: bool = True,
half_blk_y: bool = True) -> Tuple[int, int]:
"""Returns unit block size given the top routing layer and power fill configuration.
Parameters
----------
top_layer : int
the top layer ID.
fill_config : Dict[int, Tuple[int, int, int, int]]
the fill configuration dictionary.
include_private : bool
True to include private layers in block size calculation.
half_blk_x : bool
True to allow half-block widths.
half_blk_y : bool
True to allow half-block heights.
Returns
-------
block_width : int
the block width in resolution units.
block_height : int
the block height in resolution units.
"""
blk_w, blk_h = self.get_block_size(top_layer,
include_private=include_private,
half_blk_x=half_blk_x,
half_blk_y=half_blk_y)
dim_list = [[blk_w], [blk_h]]
for lay, (tr_w, tr_sp, _, _) in fill_config.items():
if lay <= top_layer:
cur_pitch = self.get_track_pitch(lay)
cur_dim = (tr_w + tr_sp) * cur_pitch * 2
dim_list[1 - self.get_direction(lay).value].append(cur_dim)
blk_w = lcm(dim_list[0])
blk_h = lcm(dim_list[1])
return blk_w, blk_h
def _get_row_specs(self, row_types, row_orientations, row_thresholds,
row_kwargs, num_g_tracks, num_gb_tracks, num_ds_tracks):
lch = self._laygo_info.lch
lch_unit = int(
round(lch / self.grid.layout_unit / self.grid.resolution))
w_sub = self._laygo_info['w_sub']
w_n = self._laygo_info['w_n']
w_p = self._laygo_info['w_p']
min_sub_tracks = self._laygo_info['min_sub_tracks']
min_n_tracks = self._laygo_info['min_n_tracks']
min_p_tracks = self._laygo_info['min_p_tracks']
mos_pitch = self._laygo_info.mos_pitch
row_specs = []
for row_type, row_orient, row_thres, kwargs, ng, ngb, nds in \
zip(row_types, row_orientations, row_thresholds, row_kwargs,
num_g_tracks, num_gb_tracks, num_ds_tracks):
# get information dictionary
if row_type == 'nch':
mos_info = self._tech_cls.get_laygo_mos_info(
lch_unit, w_n, row_type, row_thres, 'general', **kwargs)
min_tracks = min_n_tracks
elif row_type == 'pch':
mos_info = self._tech_cls.get_laygo_mos_info(
lch_unit, w_p, row_type, row_thres, 'general', **kwargs)
min_tracks = min_p_tracks
elif row_type == 'ptap':
mos_info = self._tech_cls.get_laygo_sub_info(
lch_unit, w_sub, row_type, row_thres, **kwargs)
min_tracks = min_sub_tracks
elif row_type == 'ntap':
mos_info = self._tech_cls.get_laygo_sub_info(
lch_unit, w_sub, row_type, row_thres, **kwargs)
min_tracks = min_sub_tracks
else:
raise ValueError('Unknown row type: %s' % row_type)
row_pitch = min_row_height = mos_pitch
for layer, num_tr in min_tracks:
tr_pitch = self.grid.get_track_pitch(layer, unit_mode=True)
min_row_height = max(min_row_height, num_tr * tr_pitch)
row_pitch = lcm([row_pitch, tr_pitch])
row_specs.append((row_type, row_orient, mos_info, min_row_height,
row_pitch, (ng, ngb, nds)))
return row_specs
def get_mos_base_end_info(self, pinfo: MOSBasePlaceInfo,
blk_pitch: int) -> MOSBaseEndInfo:
blk_pitch = lcm([self.blk_h_pitch, blk_pitch])
bot_rpinfo = pinfo.get_row_place_info(0)
top_rpinfo = pinfo.get_row_place_info(-1)
h_ext_bot = bot_rpinfo.yb_blk - bot_rpinfo.yb
h_ext_top = top_rpinfo.yt - top_rpinfo.yt_blk
h_end_min = self.end_h_min
h_mos_end_bot, h_blk_bot = _get_end_block_info(h_ext_bot, h_end_min,
blk_pitch)
h_mos_end_top, h_blk_top = _get_end_block_info(h_ext_top, h_end_min,
blk_pitch)
return MOSBaseEndInfo((h_mos_end_bot, h_mos_end_top),
(h_blk_bot, h_blk_top))
def get_block_pitch(cls, grid, top_layer, **kwargs):
integ_htr = kwargs.get('integ_htr', False)
if top_layer is not None:
blk_pitch = grid.get_block_size(top_layer, unit_mode=True)[1]
if integ_htr:
hm_layer = top_layer
while grid.get_direction(hm_layer) != 'x':
hm_layer -= 1
blk_pitch = lcm([
blk_pitch,
grid.get_track_pitch(hm_layer, unit_mode=True)
])
else:
blk_pitch = 1
return blk_pitch
def get_block_size(cls,
grid,
route_layer,
bias_config,
nwire,
width=1,
space_sig=0):
# type: (RoutingGrid, int, Dict[int, Tuple[int, ...]], int, int, int) -> Tuple[int, int]
bot_layer = route_layer - 1
top_layer = route_layer + 1
route_dir = grid.get_direction(route_layer)
is_horiz = route_dir == 'x'
# calculate dimension
bot_pitch2 = grid.get_track_pitch(bot_layer, unit_mode=True) // 2
route_pitch2 = grid.get_track_pitch(route_layer, unit_mode=True) // 2
top_pitch2 = grid.get_track_pitch(top_layer, unit_mode=True) // 2
bot_np2, bot_w, bot_spe2, _ = bias_config[bot_layer]
route_np2, route_w, route_spe2, _ = bias_config[route_layer]
top_np2, top_w, top_spe2, _ = bias_config[top_layer]
bot_unit = bot_np2 * bot_pitch2
route_unit = route_np2 * route_pitch2
top_unit = top_np2 * top_pitch2
dim_par = lcm([bot_unit, top_unit])
tr_manager = TrackManager(grid, {'sig': {
route_layer: width
}}, {('sig', ''): {
route_layer: space_sig
}},
half_space=True)
tmp = [route_w]
nwire = -(-nwire // 2) * 2
route_list = list(chain(tmp, repeat('sig', nwire), tmp))
_, locs = tr_manager.place_wires(route_layer, route_list)
num_htr = int(2 * (locs[nwire + 1] - locs[0])) + 2 * route_spe2
dim_perp = -(-(num_htr * route_pitch2) // route_unit) * route_unit
if is_horiz:
return dim_par, dim_perp
else:
return dim_perp, dim_par
def get_sub_yloc_info(self, lch_unit, w, **kwargs):
# type: (int, int, **kwargs) -> Dict[str, Any]
"""Get substrate layout information.
Layout is quite simple. We use M0PO to short adjacent S/D together, so dummies can be
connected using only M2 or below.
Strategy:
1. Find bottom M0_PO and bottom OD coordinates from spacing rules.
#. Find template top coordinate by enforcing symmetry around OD center.
#. Round up template height to blk_pitch, then recenter OD.
#. make sure MD/M1 are centered on OD.
"""
blk_pitch = kwargs['blk_pitch']
mos_constants = self.get_mos_tech_constants(lch_unit)
fin_p = mos_constants['mos_pitch']
od_spy = mos_constants['od_spy']
mp_cpo_sp_sub = mos_constants['mp_cpo_sp_sub']
mp_h_sub = mos_constants['mp_h_sub']
mp_spy_sub = mos_constants['mp_spy_sub']
mp_md_sp_sub = mos_constants['mp_md_sp_sub']
cpo_h = mos_constants['cpo_h']
md_h_min = mos_constants['md_h_min']
md_od_exty = mos_constants['md_od_exty']
md_spy = mos_constants['md_spy']
# compute gate/drain connection parameters
g_conn_info = self.get_conn_drc_info(lch_unit, 'g')
g_m1_sple = g_conn_info[1]['sp_le']
d_conn_info = self.get_conn_drc_info(lch_unit, 'd')
d_m3_sple = d_conn_info[3]['sp_le']
od_h = self.get_od_h(lch_unit, w)
md_h = max(od_h + 2 * md_od_exty, md_h_min)
# figure out Y coordinate of bottom CPO
cpo_bot_yt = cpo_h // 2
# find bottom M0_PO coordinate
mp_yb = max(mp_spy_sub // 2, cpo_bot_yt + mp_cpo_sp_sub)
mp_yt = mp_yb + mp_h_sub
# find first-pass OD coordinate
od_yb = mp_yt + mp_md_sp_sub + md_h // 2 - od_h // 2
od_yb = self.snap_od_edge(lch_unit, od_yb, False, True)
od_yt = od_yb + od_h
cpo_top_yc = od_yt + od_yb
# fix substrate height quantization, then recenter OD location
blk_pitch = lcm([blk_pitch, fin_p])
blk_h = -(-cpo_top_yc // blk_pitch) * blk_pitch
cpo_top_yc = blk_h
od_yb = blk_h // 2 - od_h // 2
od_yb = self.snap_od_edge(lch_unit, od_yb, False, True)
od_yt = od_yb + od_h
od_yc = (od_yb + od_yt) // 2
# find MD Y coordinates
md_yb = od_yc - md_h // 2
md_yt = md_yb + md_h
blk_yb, blk_yt = 0, cpo_top_yc
conn_info = self.get_conn_yloc_info(lch_unit, (od_yb, od_yt),
(md_yb, md_yt), True)
m1_yb, m1_yt = conn_info['d_y_list'][0]
m3_yb, m3_yt = conn_info['d_y_list'][2]
return dict(
blk=(blk_yb, blk_yt),
po=(blk_yb + cpo_h // 2, blk_yt - cpo_h // 2),
od=(od_yb, od_yt),
md=(md_yb, md_yt),
top_margins=dict(od=(blk_yt - od_yt, od_spy),
md=(blk_yt - md_yt, md_spy),
m1=(blk_yt - m1_yt, g_m1_sple),
m3=(blk_yt - m3_yt, d_m3_sple)),
bot_margins=dict(
od=(od_yb - blk_yb, od_spy),
md=(md_yb - blk_yb, md_spy),
m1=(m1_yb - blk_yb, g_m1_sple),
m3=(m3_yb - blk_yb, d_m3_sple),
),
fill_info={},
g_conn_y=(m3_yb, m3_yt),
d_conn_y=(m3_yb, m3_yt),
)
def get_laygo_sub_yloc_info(self, lch_unit, w, **kwargs):
# type: (int, float, **kwargs) -> Dict[str, Any]
dnw_mode = kwargs.get('dnw_mode', '')
blk_pitch = kwargs.get('blk_pitch', 1)
mos_pitch = self.get_mos_pitch(unit_mode=True)
md_min_len = self.get_md_min_len(lch_unit)
mos_constants = self.get_mos_tech_constants(lch_unit)
od_spy = mos_constants['od_spy']
imp_od_ency = mos_constants['imp_od_ency']
po_spy = mos_constants['po_spy']
d_via_info = mos_constants['laygo_d_via']
nw_dnw_ovl = mos_constants['nw_dnw_ovl']
nw_dnw_ext = mos_constants['nw_dnw_ext']
sub_m1_enc_le = mos_constants['sub_m1_enc_le']
layout_unit = self.config['layout_unit']
res = self.res
od_h = int(round(w / layout_unit / (2 * res))) * 2
# step 0: figure out implant/OD enclosure
if dnw_mode:
imp_od_ency = max(imp_od_ency, (nw_dnw_ovl + nw_dnw_ext - od_h) // 2)
# step 1: find OD coordinate
od_yb = imp_od_ency
od_yt = od_yb + od_h
blk_yt = od_yt + imp_od_ency
# fix substrate height quantization, then recenter OD location
blk_pitch = lcm([blk_pitch, mos_pitch])
blk_yt = -(-blk_yt // blk_pitch) * blk_pitch
od_yb = (blk_yt - od_h) // 2
od_yt = od_yb + od_h
od_yc = (od_yb + od_yt) // 2
# step 2: find metal height
drc_info = self.get_conn_drc_info(lch_unit, 'd', is_laygo=True)
mx_spy = max((info['sp_le'] for info in drc_info.values()))
d_v0_h = d_via_info['dim'][0][1]
d_v0_sp = d_via_info['sp'][0]
d_v0_od_ency = d_via_info['bot_enc_le'][0]
d_v0_n = (od_h - 2 * d_v0_od_ency + d_v0_sp) // (d_v0_h + d_v0_sp)
d_v0_arrh = d_v0_n * (d_v0_h + d_v0_sp) - d_v0_sp
#mx_h = max(md_min_len, d_v0_arrh + 2 * sub_m1_enc_le)
mx_h = max(md_min_len, d_v0_arrh + 2 * sub_m1_enc_le, od_h)
d_mx_yb = od_yc - mx_h // 2
d_mx_yt = d_mx_yb + mx_h
mx_y = (d_mx_yb, d_mx_yt)
return dict(
blk=(0, blk_yt),
po=(od_yb, od_yb),
od=(od_yb, od_yt),
top_margins=dict(
od=(blk_yt - od_yt, od_spy),
po=(blk_yt, po_spy),
#mx=(blk_yt - d_mx_yt, mx_spy),
m1=(blk_yt - d_mx_yt, mx_spy),
),
bot_margins=dict(
od=(od_yb, od_spy),
po=(blk_yt, po_spy),
#mx=(d_mx_yb, mx_spy),
m1=(d_mx_yb, mx_spy),
),
fill_info={},
g_conn_y=mx_y,
d_conn_y=mx_y,
)
def get_core_track_info(
cls, # type: ResTech
grid, # type: RoutingGrid
min_tracks, # type: Tuple[int, ...]
em_specs # type: Dict[str, Any]
):
# type: (...) -> Tuple[List[int], List[int], Tuple[int, int], Tuple[int, int]]
"""Calculate resistor core size/track information based on given specs.
This method calculate the track width/spacing on each routing layer from EM specifications,
then compute minimum width/height and block pitch of resistor blocks from given
constraints.
Parameters
----------
grid : RoutingGrid
the RoutingGrid object.
min_tracks : List[int]
minimum number of tracks on each layer.
em_specs : Dict[str, Any]
EM specification dictionary.
Returns
-------
track_widths : List[int]
the track width on each layer that satisfies EM specs.
track_spaces : List[int]
the track space on each layer.
min_size : Tuple[int, int]
a tuple of minimum width and height of the core in resolution units.
blk_pitch : Tuple[int, int]
a tuple of width and height pitch of the core in resolution units.
"""
track_widths = []
track_spaces = []
prev_width = -1
min_w = min_h = 0
cur_layer = cls.get_bot_layer()
for min_num_tr in min_tracks:
tr_w, tr_sp = grid.get_track_info(cur_layer, unit_mode=True)
cur_width = grid.get_min_track_width(cur_layer,
bot_w=prev_width,
unit_mode=True,
**em_specs)
cur_space = grid.get_num_space_tracks(cur_layer, cur_width)
track_widths.append(cur_width)
track_spaces.append(cur_space)
cur_width_lay = cur_width * tr_w + (cur_width - 1) * tr_sp
cur_space_lay = (cur_space + 1) * tr_sp + cur_space * tr_w
min_dim = min_num_tr * (cur_width_lay + cur_space_lay)
if grid.get_direction(cur_layer) == 'x':
min_h = max(min_h, min_dim)
else:
min_w = max(min_w, min_dim)
cur_layer += 1
prev_width = cur_width_lay
cur_layer -= 1
wblk, hblk = grid.get_block_size(cur_layer, unit_mode=True)
rwblk, rhblk = cls.get_block_pitch()
wblk = lcm([wblk, rwblk])
hblk = lcm([hblk, rhblk])
min_w = -(-min_w // wblk) * wblk
min_h = -(-min_h // hblk) * hblk
return track_widths, track_spaces, (min_w, min_h), (wblk, hblk)
def get_core_track_info(
self, # type: ResTech
grid, # type: RoutingGrid
min_tracks, # type: Tuple[int, ...]
em_specs, # type: Dict[str, Any]
connect_up=False, # type: bool
):
# type: (...) -> Tuple[List[int], List[Union[int, float]], Tuple[int, int], Tuple[int, int]]
"""Calculate resistor core size/track information based on given specs.
This method calculate the track width/spacing on each routing layer from EM specifications,
then compute minimum width/height and block pitch of resistor blocks from given
constraints.
Parameters
----------
grid : RoutingGrid
the RoutingGrid object.
min_tracks : Tuple[int, ...]
minimum number of tracks on each layer.
em_specs : Dict[str, Any]
EM specification dictionary.
connect_up : bool
True if the last used layer needs to be able to connect to the layer above.
This options will make sure that the width of the last track is wide enough to support
the inter-layer via.
Returns
-------
track_widths : List[int]
the track width on each layer that satisfies EM specs.
track_spaces : List[Union[int, float]]
the track space on each layer.
min_size : Tuple[int, int]
a tuple of minimum width and height of the core in resolution units.
blk_pitch : Tuple[int, int]
a tuple of width and height pitch of the core in resolution units.
"""
track_widths = []
track_spaces = []
prev_width = -1
min_w = min_h = 0
cur_layer = self.get_bot_layer()
for idx, min_num_tr in enumerate(min_tracks):
# make sure that current layer can connect to next layer
if idx < len(min_tracks) - 1 or connect_up:
top_tr_w = grid.get_min_track_width(cur_layer + 1,
unit_mode=True,
**em_specs)
top_w = grid.get_track_width(cur_layer + 1,
top_tr_w,
unit_mode=True)
else:
top_w = -1
tr_p = grid.get_track_pitch(cur_layer, unit_mode=True)
cur_width = grid.get_min_track_width(cur_layer,
bot_w=prev_width,
top_w=top_w,
unit_mode=True,
**em_specs)
cur_space = grid.get_num_space_tracks(cur_layer,
cur_width,
half_space=True)
track_widths.append(cur_width)
track_spaces.append(cur_space)
cur_ntr = min_num_tr * (cur_width + cur_space)
if isinstance(cur_space, float):
cur_ntr += 0.5
min_dim = int(round(tr_p * cur_ntr))
if grid.get_direction(cur_layer) == 'x':
min_h = max(min_h, min_dim)
else:
min_w = max(min_w, min_dim)
prev_width = grid.get_track_width(cur_layer,
cur_width,
unit_mode=True)
cur_layer += 1
# get block size
wblk, hblk = grid.get_block_size(cur_layer - 1,
unit_mode=True,
include_private=True,
half_blk_x=False,
half_blk_y=False)
wblk_drc, hblk_drc = self.get_block_pitch()
wblk = lcm([wblk, wblk_drc])
hblk = lcm([hblk, hblk_drc])
min_w = -(-min_w // wblk) * wblk
min_h = -(-min_h // hblk) * hblk
return track_widths, track_spaces, (min_w, min_h), (wblk, hblk)
def draw_layout(self) -> None:
pinfo = MOSBasePlaceInfo.make_place_info(self.grid,
self.params['pinfo'])
self.draw_base(pinfo)
se_params: Param = self.params['se_params']
flop_params: Param = self.params['flop_params']
inv_params: Param = self.params['inv_params']
vm_pitch: HalfInt = HalfInt.convert(self.params['vm_pitch'])
# create masters
flop_pinfo = self.get_draw_base_sub_pattern(2, 4)
flop_params = flop_params.copy(
append=dict(pinfo=flop_pinfo, out_pitch=vm_pitch))
se_params = se_params.copy(append=dict(pinfo=self.get_tile_pinfo(0),
vertical_out=False,
vertical_in=False))
inv_params = inv_params.copy(
append=dict(pinfo=self.get_tile_pinfo(2), ridx_n=0, ridx_p=-1))
flop_master = self.new_template(FlopStrongArm, params=flop_params)
se_master = self.new_template(SingleToDiff, params=se_params)
inv_master = self.new_template(InvCore, params=inv_params)
# floorplanning
tr_manager = self.tr_manager
hm_layer = self.conn_layer + 1
vm_layer = hm_layer + 1
xm_layer = vm_layer + 1
vm_w = tr_manager.get_width(vm_layer, 'sig')
vm_w_hs = tr_manager.get_width(vm_layer, 'sig_hs')
# get flop column quantization
sd_pitch = self.sd_pitch
vm_coord_pitch = int(vm_pitch * self.grid.get_track_pitch(vm_layer))
sep_half = max(-(-self.min_sep_col // 2),
-(-vm_coord_pitch // sd_pitch))
blk_ncol = lcm([sd_pitch, vm_coord_pitch]) // sd_pitch
sep_ncol = self.min_sep_col
flop_ncol2 = flop_master.num_cols // 2
se_col = sep_half
center_col = sep_half + inv_master.num_cols + sep_ncol + flop_ncol2
center_col = -(-center_col // blk_ncol) * blk_ncol
cur_col = center_col - flop_ncol2
if (cur_col & 1) != (se_col & 1):
se_col += 1
se = self.add_tile(se_master, 0, se_col)
inv = self.add_tile(inv_master, 2, cur_col - sep_ncol, flip_lr=True)
flop = self.add_tile(flop_master, 2, cur_col)
cur_col += flop_master.num_cols + self.sub_sep_col // 2
lay_range = range(self.conn_layer, xm_layer + 1)
vdd_table: Dict[int, List[WireArray]] = {lay: [] for lay in lay_range}
vss_table: Dict[int, List[WireArray]] = {lay: [] for lay in lay_range}
sup_info = self.get_supply_column_info(xm_layer)
for tile_idx in range(self.num_tile_rows):
self.add_supply_column(sup_info,
cur_col,
vdd_table,
vss_table,
ridx_p=-1,
ridx_n=0,
tile_idx=tile_idx,
flip_lr=False)
self.set_mos_size()
# connections
# supplies
for lay in range(hm_layer, xm_layer + 1, 2):
vss = vss_table[lay]
vdd = vdd_table[lay]
if lay == hm_layer:
for inst in [inv, flop, se]:
vdd.extend(inst.get_all_port_pins('VDD'))
vss.extend(inst.get_all_port_pins('VSS'))
vdd = self.connect_wires(vdd)
vss = self.connect_wires(vss)
self.add_pin(f'VDD_{lay}', vdd, hide=True)
self.add_pin(f'VSS_{lay}', vss, hide=True)
inp = flop.get_pin('inp')
inn = flop.get_pin('inn')
loc_list = tr_manager.place_wires(vm_layer, ['sig_hs'] * 2,
center_coord=inp.middle)[1]
inp, inn = self.connect_differential_tracks(inp,
inn,
vm_layer,
loc_list[0],
loc_list[1],
width=vm_w_hs)
self.add_pin('sa_inp', inp)
self.add_pin('sa_inn', inn)
in_vm_ref = self.grid.coord_to_track(vm_layer, 0)
in_vm_tidx = tr_manager.get_next_track(vm_layer,
in_vm_ref,
'sig',
'sig',
up=True)
vm_phtr = vm_pitch.dbl_value
in_vm_dhtr = -(-(in_vm_tidx - in_vm_ref).dbl_value //
vm_phtr) * vm_phtr
in_vm_tidx = in_vm_ref + HalfInt(in_vm_dhtr)
in_warr = self.connect_to_tracks(se.get_all_port_pins('in'),
TrackID(vm_layer,
in_vm_tidx,
width=vm_w),
track_lower=0)
self.add_pin('in', in_warr)
out = flop.get_pin('outp')
self.add_pin('out', self.extend_wires(out, upper=self.bound_box.yh))
self.reexport(flop.get_port('clkl'), net_name='clk', hide=False)
self.reexport(flop.get_port('rstlb'))
self.reexport(se.get_port('outp'), net_name='midp')
self.reexport(se.get_port('outn'), net_name='midn')
self.reexport(inv.get_port('in'), net_name='dum')
self.sch_params = dict(
se_params=se_master.sch_params,
flop_params=flop_master.sch_params,
inv_params=inv_master.sch_params,
)
def make_wire_specs(cls,
conn_layer: int,
top_layer: int,
tr_manager: TrackManager,
wire_specs: Mapping[int, Any],
min_size: Tuple[int, int] = (1, 1),
blk_pitch: Tuple[int, int] = (1, 1),
align_default: Alignment = Alignment.LOWER_COMPACT,
ptype_default: str = '') -> WireSpecs:
"""Read wire specifications from a dictionary.
WireSpec dictionary format:
WireSpec = Dict[int, WireData]
WireData = Union[WireGraph, {data=WireGraph, align=Alignment, shared=List[str]}]
WireGraph = Union[WireGroup, List[WireGroup]]
WireGroup = Union[WireList, {wires=WireList, align=Alignment}]
WireList = List[Wire]
Wire = Union[name, (name, placement_type), (name, placement_type, wire_type)]
keys of WireSpec is delta layer from conn_layer, so key of 1 is the same as conn_layer + 1.
Parameters
----------
conn_layer : int
the connection layer ID.
top_layer : int
the top layer, used to compute block quantization.
tr_manager : TrackManager
the TrackManager instance.
wire_specs : Mapping[int, Any]
the wire specification dictionary to parse.
min_size : Tuple[int, int]
minimum width/height.
blk_pitch : Tuple[int, int]
width/height quantization on top of routing grid quantization.
align_default : Alignment
default alignment enum.
ptype_default : str
default placement type.
Returns
-------
wire_specs : WireSpecs
the wire specification dataclass.
"""
w_min, h_min = min_size
blk_w_res, blk_h_res = blk_pitch
grid = tr_manager.grid
half_blk_x = half_blk_y = True
graph_list = []
for delta_layer, wire_data in wire_specs.items():
cur_layer = conn_layer + delta_layer
wd = WireData.make_wire_data(wire_data, align_default,
ptype_default)
cur_graph = WireGraph.make_wire_graph(cur_layer, tr_manager, wd)
cur_graph.place_compact(cur_layer, tr_manager)
graph_list.append((cur_layer, cur_graph))
if grid.is_horizontal(cur_layer):
half_blk_y = half_blk_y and not cur_graph.has_center
h_min = max(h_min, cur_graph.upper)
else:
half_blk_x = half_blk_x and not cur_graph.has_center
w_min = max(w_min, cur_graph.upper)
blk_w, blk_h = grid.get_block_size(top_layer,
half_blk_x=half_blk_x,
half_blk_y=half_blk_y)
blk_w = lcm([blk_w, blk_w_res])
blk_h = lcm([blk_h, blk_h_res])
w_min = -(-w_min // blk_w) * blk_w
h_min = -(-h_min // blk_h) * blk_h
return WireSpecs((w_min, h_min), (blk_w, blk_h), graph_list)