def __init__(self, row_specs: MOSRowSpecs, row_info: MOSRowInfo,
bot_conn_y_table: Mapping[MOSWireType, Tuple[int, int]],
top_conn_y_table: Mapping[MOSWireType, Tuple[int, int]],
bot_ext_info: RowExtInfo, top_ext_info: RowExtInfo):
# work around: this is how you set attributes for frozen data classes
object.__setattr__(self, 'row_specs', row_specs)
object.__setattr__(self, 'row_info', row_info)
object.__setattr__(self, 'bot_conn_y_table', ImmutableSortedDict(bot_conn_y_table))
object.__setattr__(self, 'top_conn_y_table', ImmutableSortedDict(top_conn_y_table))
object.__setattr__(self, 'bot_ext_info', bot_ext_info)
object.__setattr__(self, 'top_ext_info', top_ext_info)
def _update_dut_params(pinfo: Mapping[str, Any], nbits: int, seg_unit: int,
seg_buf: int, seg_nand: int, seg_inv: int,
num_cores: int, dc_params: Mapping[str,
Any]) -> Param:
return ImmutableSortedDict(
dict(
pinfo=pinfo,
pi_params=dict(
unit_params={
'seg': seg_unit,
'stack_p': 1,
'stack_n': 1
},
inv_params={
'seg': seg_buf,
'stack_p': 1,
'stack_n': 1
},
abut_tristates=True,
),
dc_params=dc_params,
inv_params=dict(seg=seg_inv),
nand_params=dict(seg=seg_nand),
num_core=num_cores,
nbits=nbits,
export_dc_out=True,
export_dc_in=True,
draw_sub=True,
# export_outb=True,
))
def __init__(self, temp_db: TemplateDB, params: Param,
**kwargs: Any) -> None:
TemplateBase.__init__(self, temp_db, params, **kwargs)
self.prim_top_layer = self.grid.bot_layer
self._corner: Optional[Tuple[int, int]] = None
self._edgel = self._edgeb = ImmutableSortedDict()
def get_blk_info(self, conn_layer: int, w: int, h: int, nx: int, ny: int,
**kwargs: Any) -> Optional[ArrayLayInfo]:
res_type: str = kwargs.get('res_type', 'standard')
if res_type != 'metal':
raise ValueError(f'unsupported resistor type: {res_type}')
x_pitch: int = self.res_config['x_pitch']
conn_w: int = self.res_config['conn_w']
sp_le = self.tech_info.get_min_line_end_space('M1CA',
conn_w,
purpose='drawing',
even=True)
builder = LayoutInfoBuilder()
x0 = x_pitch // 2
yl = sp_le
yh = h - sp_le
x1 = w - x_pitch // 2
boxl = BBox(x0 - conn_w // 2, yl, x0 + conn_w // 2, yh)
builder.add_rect_arr(('M1CA', 'drawing'), boxl, nx=2, spx=x1 - x0)
xm = w // 2
boxm = BBox(xm - conn_w // 2, yl, xm + conn_w // 2, yh)
builder.add_rect_arr(('M1CA', 'drawing'), boxm)
boxr = BBox(boxm.xl, yl + conn_w, boxm.xh, yh - conn_w)
builder.add_rect_arr(('m1res', 'drawing'), boxr)
builder.add_rect_arr(('M1CA', 'drawing'),
BBox(boxl.xl, yl, boxm.xh, yl + conn_w))
boxr = boxl.get_move_by(dx=x1 - x0)
builder.add_rect_arr(('M1CA', 'drawing'),
BBox(boxm.xl, yh - conn_w, boxr.xh, yh))
tidu = HalfInt(2 * ((w // x_pitch) - 1))
return ArrayLayInfo(
builder.get_info(BBox(0, 0, w, h)),
ImmutableSortedDict({
'u':
WireArrayInfo(1, tidu, yl, yh, 1, 1, 0),
'l':
WireArrayInfo(1, HalfInt(0), yl, yh, 1, 1, 0)
}), ImmutableSortedDict(), ImmutableSortedDict())
def copy_with(self,
row_type: Optional[MOSType] = None,
threshold: Optional[str] = None,
**kwargs) -> RowExtInfo:
if row_type is None:
row_type = self.row_type
if threshold is None:
threshold = self.threshold
info_dict = self.info.to_dict()
info_dict.update(kwargs)
return RowExtInfo(row_type, threshold, ImmutableSortedDict(info_dict))
def _get_w_th_dict(
self, ridx_n: int, ridx_p: int
) -> Tuple[ImmutableSortedDict[str, int], ImmutableSortedDict[str, str]]:
w_dict: Mapping[str, int] = self.params['w_dict']
w_ans = {}
th_ans = {}
for name, row_idx in [('tail', ridx_n), ('in', ridx_n + 1),
('pfb', ridx_p)]:
rinfo = self.get_row_info(row_idx, 0)
w = w_dict.get(name, 0)
if w == 0:
w = rinfo.width
w_ans[name] = w
th_ans[name] = rinfo.threshold
w_ans['br'] = w_ans['nfb'] = w_ans['in']
w_ans['swm'] = w_ans['swo'] = w_ans['pfb']
th_ans['br'] = th_ans['nfb'] = th_ans['in']
th_ans['swm'] = th_ans['swo'] = th_ans['pfb']
return ImmutableSortedDict(w_ans), ImmutableSortedDict(th_ans)
def _get_w_th_dict(self, ridx_n: int, ridx_p: int, has_rstb: bool
) -> Tuple[ImmutableSortedDict[str, int], ImmutableSortedDict[str, str]]:
w_dict: Mapping[str, int] = self.params['w_dict']
w_ans = {}
th_ans = {}
for row_idx, name_list in [(ridx_n, ['nfb', 'nr']),
(ridx_p, ['pfb', 'ps'])]:
rinfo = self.get_row_info(row_idx, 0)
for name in name_list:
w = w_dict.get(name, 0)
if w == 0:
w = rinfo.width
w_ans[name] = w
th_ans[name] = rinfo.threshold
if has_rstb:
w_ans['pr'] = w_ans['ps']
th_ans['pr'] = th_ans['ps']
return ImmutableSortedDict(w_ans), ImmutableSortedDict(th_ans)
def __init__(self,
data: Dict[Tuple[str, int], Tuple[HalfInt, int]],
ranges: Optional[Dict[str, List[int]]] = None) -> None:
self._data: ImmutableSortedDict[Tuple[str, int],
Tuple[HalfInt,
int]] = ImmutableSortedDict(data)
if ranges is None:
self._ranges = {}
for name, idx in data.keys():
cur_range = self._ranges.get(name, None)
if cur_range is None:
self._ranges[name] = [idx, idx]
else:
cur_range[0] = min(cur_range[0], idx)
cur_range[1] = max(cur_range[1], idx)
else:
self._ranges = ranges
def get_mos_corner_info(self, blk_w: int, blk_h: int, einfo: MOSEdgeInfo) -> CornerLayInfo:
sd_pitch = self.sd_pitch
cpo_h = self.mos_config['cpo_h']
mos_lay_table = self.tech_info.config['mos_lay_table']
cpo_lp = mos_lay_table['CPO']
cpo_h2 = cpo_h // 2
blk_rect = BBox(0, 0, blk_w, blk_h)
builder = LayoutInfoBuilder()
builder.add_rect_arr(cpo_lp,
BBox(blk_w - sd_pitch, blk_h - cpo_h2, blk_w, blk_h + cpo_h2))
edgel = edgeb = ImmutableSortedDict(dict(dev_type=DeviceType.MOS, well_margin=sd_pitch))
return CornerLayInfo(builder.get_info(blk_rect), (0, 0), edgel, edgeb)
def __init__(self,
mos_type: MOSType,
width: int,
threshold: str,
bot_wires: WireData,
top_wires: WireData,
options: Optional[Mapping[str, Any]] = None,
flip: bool = False,
sub_width: int = 0) -> None:
if sub_width == 0 or mos_type.is_substrate:
sub_width = width
# work around: this is how you set attributes for frozen data classes
object.__setattr__(self, 'mos_type', mos_type)
object.__setattr__(self, 'width', width)
object.__setattr__(self, 'threshold', threshold)
object.__setattr__(self, 'bot_wires', bot_wires)
object.__setattr__(self, 'top_wires', top_wires)
object.__setattr__(self, 'options', ImmutableSortedDict(options))
object.__setattr__(self, 'flip', flip)
object.__setattr__(self, 'sub_width', sub_width)
def from_dict(cls, table: Mapping[str, Any]) -> MOSRowInfo:
row_type = MOSType[table['row_type']]
top_ext_info = RowExtInfo.from_dict(table['top_ext_info'])
bot_ext_info = RowExtInfo.from_dict(table['bot_ext_info'])
return MOSRowInfo(table['lch'],
table['width'],
table['sub_width'],
row_type,
table['threshold'],
table['height'],
table['flip'],
top_ext_info,
bot_ext_info,
ImmutableSortedDict(table['info']),
table['g_conn_y'],
table['g_m_conn_y'],
table['ds_conn_y'],
table['ds_m_conn_y'],
table['ds_g_conn_y'],
table['sub_conn_y'],
guard_ring=table.get('guard_ring', False))
def get_end_info(self, w: int, h: int, info: ImmutableSortedDict[str, Any],
**kwargs: Any) -> ArrayEndInfo:
builder = LayoutInfoBuilder()
return ArrayEndInfo(builder.get_info(BBox(0, 0, w, h)),
ImmutableSortedDict())
def get_info(self, bnd_box: BBox) -> LayoutInfo:
return LayoutInfo(ImmutableSortedDict(self._lp_dict),
ImmutableList(self._warr_list),
ImmutableList(self._via_list), bnd_box)
def draw_layout(self) -> None:
pinfo = MOSBasePlaceInfo.make_place_info(self.grid,
self.params['pinfo'])
self.draw_base(pinfo)
seg_dict: ImmutableSortedDict[str, int] = self.params['seg_dict']
ridx_n: int = self.params['ridx_n']
ridx_p: int = self.params['ridx_p']
vertical_sel: bool = self.params['vertical_sel']
w_dict = self._get_w_dict(ridx_n, ridx_p)
seg_tri = seg_dict['tri']
seg_buf = seg_dict['buf']
w_pbuf = w_dict['pbuf']
w_nbuf = w_dict['nbuf']
w_ptri = w_dict['ptri']
w_ntri = w_dict['ntri']
if (seg_tri & 1) or (seg_buf % 4 != 0):
raise ValueError(
'segments of transistors must be even, buf must be multiple of 4.'
)
seg_buf_half = seg_buf // 2
# placement
vm_layer = self.conn_layer + 2
grid = self.grid
tr_manager = self.tr_manager
vm_w = tr_manager.get_width(vm_layer, 'sig')
vss_tid = self.get_track_id(ridx_n, False, wire_name='sup')
vdd_tid = self.get_track_id(ridx_p, True, wire_name='sup')
nd_tid = self.get_track_id(ridx_n,
MOSWireType.DS,
wire_name='sig',
wire_idx=-1)
pd_tid = self.get_track_id(ridx_p,
MOSWireType.DS,
wire_name='sig',
wire_idx=0)
ng2_tid = self.get_track_id(ridx_n,
MOSWireType.G,
wire_name='sig',
wire_idx=2)
pg0_tid = self.get_track_id(ridx_p,
MOSWireType.G,
wire_name='sig',
wire_idx=-2)
pg1_tid = self.get_track_id(ridx_p,
MOSWireType.G,
wire_name='sig',
wire_idx=-1)
in_tid = ng2_tid
pmid_tid = pg0_tid
psel_tid = pg1_tid
tri_ncol = 2 * seg_tri
min_sep = self.min_sep_col
min_sep += (min_sep & 1)
ntri = self.add_mos(ridx_n,
0,
seg_tri,
w=w_ntri,
stack=2,
g_on_s=True,
sep_g=True)
ptri = self.add_mos(ridx_p,
0,
seg_tri,
w=w_ptri,
stack=2,
g_on_s=True,
sep_g=True)
cur_col = tri_ncol + min_sep
nbuf = self.add_mos(ridx_n, cur_col, seg_buf_half, w=w_nbuf)
pbuf = self.add_mos(ridx_p, cur_col, seg_buf_half, w=w_pbuf)
self.set_mos_size()
# routing
# supplies
vdd = self.connect_to_tracks([ptri.s, pbuf.s], vdd_tid)
vss = self.connect_to_tracks([ntri.s, nbuf.s], vss_tid)
self.add_pin('VDD', vdd)
self.add_pin('VSS', vss)
# select signals
in_warr = self.connect_to_tracks([ntri.g[0::2], ptri.g[0::2]], in_tid)
nsel = ntri.g[1::2]
psel = self.connect_to_tracks(ptri.g[1::2],
psel_tid,
min_len_mode=MinLenMode.MIDDLE)
vm_tidx = grid.coord_to_track(vm_layer,
psel.middle,
mode=RoundMode.GREATER_EQ)
if vertical_sel:
psel_vm = self.connect_to_tracks(psel,
TrackID(vm_layer,
vm_tidx,
width=vm_w),
min_len_mode=MinLenMode.LOWER)
self.add_pin('psel_vm', psel_vm)
self.add_pin('in', in_warr)
self.add_pin('nsel', nsel)
self.add_pin('psel', psel)
# mid
pmid = self.connect_to_tracks(ptri.d,
pd_tid,
min_len_mode=MinLenMode.UPPER)
nmid = self.connect_to_tracks(ntri.d,
nd_tid,
min_len_mode=MinLenMode.UPPER)
vm_tidx = tr_manager.get_next_track(vm_layer,
vm_tidx,
'sig',
'sig',
up=True)
mid = self.connect_to_tracks([pmid, nmid],
TrackID(vm_layer, vm_tidx, width=vm_w))
mid = self.connect_to_tracks([mid, nbuf.g, pbuf.g], pmid_tid)
self.add_pin('mid', mid)
# output
pout = self.connect_to_tracks(pbuf.d,
pd_tid,
min_len_mode=MinLenMode.UPPER)
nout = self.connect_to_tracks(nbuf.d,
nd_tid,
min_len_mode=MinLenMode.UPPER)
vm_tidx = grid.coord_to_track(vm_layer, self.bound_box.xh)
out = self.connect_to_tracks([pout, nout],
TrackID(vm_layer, vm_tidx, width=vm_w))
self.add_pin('out', out)
lch = self.arr_info.lch
th_p = self.get_row_info(ridx_p, 0).threshold
th_n = self.get_row_info(ridx_n, 0).threshold
self.sch_params = dict(
inv_params=ImmutableSortedDict(
dict(
lch=lch,
seg_p=seg_buf,
seg_n=seg_buf,
w_p=w_pbuf,
w_n=w_nbuf,
th_p=th_p,
th_n=th_n,
)),
tri_params=ImmutableSortedDict(
dict(
lch=lch,
seg=seg_tri,
w_p=w_ptri,
w_n=w_ntri,
th_p=th_p,
th_n=th_n,
)),
)
def draw_layout(self):
place_info = MOSBasePlaceInfo.make_place_info(self.grid,
self.params['pinfo'])
self.draw_base(place_info)
seg_dict: ImmutableSortedDict[str, int] = self.params['seg_dict']
ridx_n: int = self.params['ridx_n']
ridx_p: int = self.params['ridx_p']
has_rstb: bool = self.params['has_rstb']
has_outbuf: bool = self.params['has_outbuf']
has_inbuf: bool = self.params['has_inbuf']
out_pitch: HalfInt = HalfInt.convert(self.params['out_pitch'])
w_dict, th_dict = self._get_w_th_dict(ridx_n, ridx_p, has_rstb)
seg_fb = seg_dict['fb']
seg_ps = seg_dict['ps']
seg_nr = seg_dict['nr']
seg_obuf = seg_dict['obuf'] if has_outbuf else 0
seg_ibuf = seg_dict['ibuf'] if has_inbuf else 0
w_pfb = w_dict['pfb']
w_nfb = w_dict['nfb']
w_ps = w_dict['ps']
w_nr = w_dict['nr']
w_rst = w_dict.get('pr', 0)
w_nbuf = w_nr
w_pbuf = w_ps
sch_seg_dict = dict(nfb=seg_fb, pfb=seg_fb, ps=seg_ps, nr=seg_nr)
if has_rstb:
sch_seg_dict['pr'] = seg_rst = seg_dict['rst']
else:
seg_rst = 0
if seg_ps & 1 or seg_nr & 1 or seg_rst & 1 or seg_obuf & 1:
raise ValueError(
'ps, nr, rst, and buf must have even number of segments')
# placement
min_sep = self.min_sep_col
# use even step size to maintain supply conn_layer wires parity.
min_sep += (min_sep & 1)
hm_layer = self.conn_layer + 1
vm_layer = hm_layer + 1
grid = self.grid
arr_info = self.arr_info
tr_manager = self.tr_manager
hm_w = tr_manager.get_width(hm_layer, 'sig')
vm_w = tr_manager.get_width(vm_layer, 'sig')
hm_sep_col = self.get_hm_sp_le_sep_col(ntr=hm_w)
mid_sep = max(hm_sep_col - 2, 0)
mid_sep = (mid_sep + 1) // 2
if has_inbuf:
m_nibuf = self.add_mos(ridx_n, mid_sep, seg_ibuf, w=w_nbuf)
m_pibuf = self.add_mos(ridx_p, mid_sep, seg_ibuf, w=w_pbuf)
cur_col = mid_sep + seg_ibuf
psrb_list = [m_nibuf.g, m_pibuf.g]
else:
m_nibuf = m_pibuf = None
cur_col = mid_sep
psrb_list = []
nr_col = cur_col
m_nr = self.add_mos(ridx_n, cur_col, seg_nr, w=w_nr)
m_ps = self.add_mos(ridx_p, cur_col, seg_ps, w=w_ps)
psrb_list.append(m_ps.g)
pcol = cur_col + seg_ps
if has_rstb:
m_rst = self.add_mos(ridx_p, pcol, seg_rst, w=w_rst)
pcol += seg_rst
else:
m_rst = None
cur_col = max(cur_col + seg_nr, pcol)
if has_outbuf:
m_pinv = self.add_mos(ridx_p, cur_col, seg_obuf, w=w_pbuf)
m_ninv = self.add_mos(ridx_n, cur_col, seg_obuf, w=w_nbuf)
cur_col += seg_obuf
else:
m_pinv = m_ninv = None
cur_col += min_sep
fb_col = cur_col
m_pfb = self.add_mos(ridx_p,
cur_col,
seg_fb,
w=w_pfb,
g_on_s=True,
stack=2,
sep_g=True)
m_nfb = self.add_mos(ridx_n,
cur_col,
seg_fb,
w=w_nfb,
g_on_s=True,
stack=2,
sep_g=True)
self.set_mos_size()
# track planning
vss_tid = self.get_track_id(ridx_n, MOSWireType.DS, wire_name='sup')
nbuf_tid = self.get_track_id(ridx_n,
MOSWireType.DS,
wire_name='sig',
wire_idx=-2)
nq_tid = self.get_track_id(ridx_n,
MOSWireType.DS,
wire_name='sig',
wire_idx=-1)
psr_tid = self.get_track_id(ridx_p,
MOSWireType.G,
wire_name='sig',
wire_idx=-1)
pq_tid = self.get_track_id(ridx_p,
MOSWireType.DS,
wire_name='sig',
wire_idx=0)
pbuf_tid = self.get_track_id(ridx_p,
MOSWireType.DS,
wire_name='sig',
wire_idx=1)
vdd_tid = self.get_track_id(ridx_p, MOSWireType.DS, wire_name='sup')
# try to spread out gate wires to lower parasitics on differential Q wires
ng_lower = self.get_track_index(ridx_n,
MOSWireType.G,
wire_name='sig',
wire_idx=0)
ng_upper = self.get_track_index(ridx_n,
MOSWireType.G,
wire_name='sig',
wire_idx=-1)
g_idx_list = tr_manager.spread_wires(
hm_layer, ['sig', 'sig_hs', 'sig_hs', 'sig'],
ng_lower,
ng_upper, ('sig_hs', 'sig_hs'),
alignment=0)
self._q_tr_info = (hm_w, g_idx_list[2], g_idx_list[1])
self._sr_hm_tr_info = (hm_w, g_idx_list[3], g_idx_list[0])
if has_rstb:
rst_tid = self.get_track_id(ridx_p,
MOSWireType.G,
wire_name='sig',
wire_idx=-2)
pq_conn_list = [m_ps.d, m_rst.d, m_pfb.s]
vdd_list = [m_ps.s, m_rst.s, m_pfb.d]
vss_list = [m_nr.s, m_nfb.d]
rstb = self.connect_to_tracks(m_rst.g,
rst_tid,
min_len_mode=MinLenMode.MIDDLE)
rst_vm_tidx = grid.coord_to_track(vm_layer,
rstb.middle,
mode=RoundMode.GREATER_EQ)
rstb_vm = self.connect_to_tracks(
rstb, TrackID(vm_layer, rst_vm_tidx, width=vm_w))
self.add_pin('rstb', rstb_vm)
else:
pq_conn_list = [m_ps.d, m_pfb.s]
vdd_list = [m_ps.s, m_pfb.d]
vss_list = [m_nr.s, m_nfb.d]
self.add_pin('nsr', m_nr.g)
self.add_pin('nsrb', m_nfb.g[0::2])
nq = self.connect_to_tracks([m_nr.d, m_nfb.s], nq_tid)
pq = self.connect_to_tracks(pq_conn_list, pq_tid)
psrb = self.connect_to_tracks(psrb_list,
psr_tid,
min_len_mode=MinLenMode.UPPER)
psr = self.connect_to_tracks(m_pfb.g[0::2],
psr_tid,
min_len_mode=MinLenMode.LOWER)
qb = self.connect_wires([m_nfb.g[1::2], m_pfb.g[1::2]])
self.add_pin('qb', qb)
if has_inbuf:
vdd_list.append(m_pibuf.s)
vss_list.append(m_nibuf.s)
nbuf = self.connect_to_tracks(m_nibuf.d,
nbuf_tid,
min_len_mode=MinLenMode.UPPER)
pbuf = self.connect_to_tracks(m_pibuf.d,
pbuf_tid,
min_len_mode=MinLenMode.UPPER)
vm_tidx = grid.coord_to_track(vm_layer,
nbuf.middle,
mode=RoundMode.LESS_EQ)
buf = self.connect_to_tracks([nbuf, pbuf],
TrackID(vm_layer, vm_tidx,
width=vm_w))
self.add_pin('sr_buf', buf)
out_p_htr = out_pitch.dbl_value
vm_ref = grid.coord_to_track(vm_layer, 0)
srb_vm_tidx = arr_info.col_to_track(vm_layer,
nr_col + 1,
mode=RoundMode.GREATER_EQ)
if has_outbuf:
vdd_list.append(m_pinv.s)
vss_list.append(m_ninv.s)
nbuf = self.connect_to_tracks(m_ninv.d,
nbuf_tid,
min_len_mode=MinLenMode.MIDDLE)
pbuf = self.connect_to_tracks(m_pinv.d,
pbuf_tid,
min_len_mode=MinLenMode.MIDDLE)
vm_delta = grid.coord_to_track(
vm_layer, nbuf.middle, mode=RoundMode.LESS_EQ) - vm_ref
vm_htr = -(-vm_delta.dbl_value // out_p_htr) * out_p_htr
vm_tidx = vm_ref + HalfInt(vm_htr)
buf = self.connect_to_tracks([nbuf, pbuf],
TrackID(vm_layer, vm_tidx,
width=vm_w))
self.add_pin('buf_out', buf)
buf_in = self.connect_wires([m_ninv.g, m_pinv.g])
self.add_pin('buf_in', buf_in)
q_vm_tidx = tr_manager.get_next_track(vm_layer, srb_vm_tidx, 'sig',
'sig')
else:
vm_delta = tr_manager.get_next_track(vm_layer, srb_vm_tidx, 'sig',
'sig') - vm_ref
vm_htr = -(-vm_delta.dbl_value // out_p_htr) * out_p_htr
q_vm_tidx = vm_ref + HalfInt(vm_htr)
sr_vm_tidx = arr_info.col_to_track(vm_layer,
fb_col,
mode=RoundMode.LESS_EQ)
self._sr_vm_tr_info = (vm_w, sr_vm_tidx, srb_vm_tidx)
q_vm = self.connect_to_tracks([nq, pq],
TrackID(vm_layer, q_vm_tidx, width=vm_w))
self.add_pin('q_vm', q_vm)
self.add_pin('psr', psr)
self.add_pin('psrb', psrb)
self.add_pin('VDD', self.connect_to_tracks(vdd_list, vdd_tid))
self.add_pin('VSS', self.connect_to_tracks(vss_list, vss_tid))
lch = arr_info.lch
buf_params = ImmutableSortedDict(
dict(
lch=lch,
w_p=w_pbuf,
w_n=w_nbuf,
th_p=th_dict['ps'],
th_n=th_dict['nr'],
seg=seg_obuf,
))
obuf_params = buf_params if has_outbuf else None
ibuf_params = buf_params.copy(append=dict(
seg=seg_ibuf)) if has_inbuf else None
self.sch_params = dict(
core_params=ImmutableSortedDict(
dict(
lch=lch,
seg_dict=ImmutableSortedDict(sch_seg_dict),
w_dict=w_dict,
th_dict=th_dict,
)),
outbuf_params=obuf_params,
inbuf_params=ibuf_params,
has_rstb=has_rstb,
)
def __init__(self, **kwargs: Any) -> None:
object.__setattr__(self, 'info', ImmutableSortedDict(kwargs))
def get_mos_row_info(self, conn_layer: int, specs: MOSRowSpecs, bot_mos_type: MOSType,
top_mos_type: MOSType, global_options: Param) -> MOSRowInfo:
guard_ring: bool = specs.options.get('guard_ring', False)
assert conn_layer == 1, 'currently only work for conn_layer = 1'
fin_p = self.mos_config['fin_p']
mp_cpo_spy: int = self.mos_config['mp_cpo_spy']
mp_h: int = self.mos_config['mp_h']
mp_spy: int = self.mos_config['mp_spy']
cpo_od_spy: int = self.mos_config['cpo_od_spy']
cpo_h: int = self.mos_config['cpo_h']
md_spy: int = self.mos_config['md_spy']
md_h_min: int = self.mos_config['md_h_min']
md_od_exty: int = self.mos_config['md_od_exty']
od_spy: int = self.mos_config['od_spy']
mos_type = specs.mos_type
w = specs.width
w_sub = specs.sub_width
od_h = self.get_od_height(w)
md_h = max(od_h + 2 * md_od_exty, md_h_min)
g_conn_info = self.get_conn_info(conn_layer, True)
g_m1_dyt = g_conn_info.via_w // 2 + g_conn_info.via_top_enc
g_m1_sp_le = g_conn_info.sp_le
d_conn_info = self.get_conn_info(conn_layer, False)
d_m1_h = max(md_h, d_conn_info.len_min)
# place bottom CPO, compute gate/OD locations
blk_yb = 0
cpo_bot_yb = blk_yb - cpo_h // 2
cpo_bot_yt = cpo_bot_yb + cpo_h
# get gate via/M1 location
mp_yb = max(mp_spy // 2, cpo_bot_yt + mp_cpo_spy)
mp_yt = mp_yb + mp_h
mp_yc = (mp_yt + mp_yb) // 2
g_m1_yt = mp_yc + g_m1_dyt
# get OD location, round to fin grid.
od_yb = g_m1_yt + g_m1_sp_le + (d_m1_h - od_h) // 2
od_yb = self.snap_od_edge(od_yb, False, True)
od_yt = od_yb + od_h
od_yc = (od_yb + od_yt) // 2
md_yb = od_yc - md_h // 2
md_yt = md_yb + md_h
# compute top CPO location.
blk_yt = od_yt + cpo_od_spy + cpo_h // 2
blk_yt = -(-blk_yt // fin_p) * fin_p
conn_info = self.get_conn_yloc_info(conn_layer, md_yb, md_yt, mos_type.is_substrate)
m1_yt = conn_info.ds[1]
m1_yb = conn_info.g[0]
m1_spy = d_conn_info.sp_le
top_einfo = RowExtInfo(
mos_type, specs.threshold,
ImmutableSortedDict(dict(
margins=dict(
od=(blk_yt - od_yt, od_spy),
md=(blk_yt - md_yt, md_spy),
m1=(blk_yt - m1_yt, m1_spy),
))),
)
bot_einfo = RowExtInfo(
specs.mos_type, specs.threshold,
ImmutableSortedDict(dict(
margins=dict(
od=(od_yb, od_spy),
md=(md_yb, md_spy),
m1=(m1_yb, m1_spy),
))),
)
info = dict(
od_yb=od_yb,
md_y=(md_yb, md_yt),
po_y=(cpo_h // 2, blk_yt - cpo_h // 2),
mp_y=conn_info.mp,
)
return MOSRowInfo(self.lch, w, w_sub, mos_type, specs.threshold, blk_yt, specs.flip,
top_einfo, bot_einfo, ImmutableSortedDict(info), conn_info.g,
conn_info.g_m, conn_info.ds, conn_info.ds_m, conn_info.ds_g,
conn_info.sub, guard_ring=guard_ring and mos_type.is_substrate)
def from_dict(cls, table: Mapping[str, Any]) -> RowExtInfo:
return RowExtInfo(MOSType[table['row_type']], table['threshold'],
ImmutableSortedDict(table['info']))
def get_mos_space_info(self, row_info: MOSRowInfo, num_cols: int, left_info: MOSEdgeInfo,
right_info: MOSEdgeInfo) -> MOSLayInfo:
lch = self.lch
sd_pitch = self.sd_pitch
od_po_extx = self.od_po_extx
if num_cols < self.min_sep_col and left_info and right_info:
# cannot draw less than min_sep_col between two devices
raise ODImplantEnclosureError(f'Cannot draw MOSSpace in {num_cols} columns.')
imp_od_encx: int = self.mos_config['imp_od_encx']
mos_lay_table = self.tech_info.config['mos_lay_table']
po_lp = mos_lay_table['PO_DUMMY']
pode_lp = mos_lay_table['PO_PODE']
blk_xr = num_cols * sd_pitch
blk_yt = row_info.height
bbox = BBox(0, 0, blk_xr, blk_yt)
row_type = row_info.row_type
threshold = row_info.threshold
builder = LayoutInfoBuilder()
po_y = (0, blk_yt)
od_extx = od_po_extx - (sd_pitch - lch) // 2
if left_info.get('has_od', False):
self._add_po_array(builder, pode_lp, po_y, 0, 1)
po_start = 1
imp_xmin = od_extx + imp_od_encx
else:
po_start = 0
imp_xmin = 0
if right_info.get('has_od', False):
self._add_po_array(builder, pode_lp, po_y, num_cols - 1, num_cols)
po_stop = num_cols - 1
imp_xmax = blk_xr - od_extx - imp_od_encx
else:
po_stop = num_cols
imp_xmax = blk_xr
self._add_po_array(builder, po_lp, (0, blk_yt), po_start, po_stop)
self._add_fb(builder, bbox)
if left_info:
typel = left_info['mos_type']
if right_info:
typer = right_info['mos_type']
else:
typer = typel
else:
if right_info:
typer = right_info['mos_type']
else:
typer = row_type
typel = typer
guard_ring = ((typel.is_substrate and typel is not row_type.sub_type) or
(typer.is_substrate and typer is not row_type.sub_type))
if typel == typer:
if guard_ring:
raise ValueError('Cannot have empty spaces between guard ring edges.')
blk_rect = BBox(0, 0, blk_xr, blk_yt)
for lay_purp in self._thres_imp_well_layers_iter(row_type, typel, threshold):
builder.add_rect_arr(lay_purp, blk_rect)
be = BlkExtInfo(row_type, threshold, False, ImmutableList([(num_cols, typel)]),
ImmutableSortedDict())
edgel = edger = MOSEdgeInfo(mos_type=typel, has_od=False, is_sub=False)
else:
# must be in transistor row, and has one substrate
if typel.is_substrate and ((not typer.is_substrate) or typel is not row_type.sub_type):
xmid = od_extx + imp_od_encx
else:
xmid = blk_xr - od_extx - imp_od_encx
if xmid < imp_xmin or xmid > imp_xmax:
raise ODImplantEnclosureError('Insufficient space to satisfy implant-OD '
'horizontal enclosure.')
rectl = BBox(0, 0, xmid, blk_yt)
rectr = BBox(xmid, 0, blk_xr, blk_yt)
for lay_purp in self._thres_imp_well_layers_iter(row_type, typel, threshold):
builder.add_rect_arr(lay_purp, rectl)
for lay_purp in self._thres_imp_well_layers_iter(row_type, typer, threshold):
builder.add_rect_arr(lay_purp, rectr)
fgl = xmid // sd_pitch
be = BlkExtInfo(row_type, threshold, guard_ring,
ImmutableList([(fgl, typel), (num_cols - fgl, typer)]),
ImmutableSortedDict())
edgel = MOSEdgeInfo(mos_type=typel, has_od=False, is_sub=False)
edger = MOSEdgeInfo(mos_type=typer, has_od=False, is_sub=False)
wire_info = (0, 0, 0)
return MOSLayInfo(builder.get_info(bbox), edgel, edger, be, be,
g_info=wire_info, d_info=wire_info, s_info=wire_info,
shorted_ports=ImmutableList())
def get_mos_tap_info(self, row_info: MOSRowInfo, conn_layer: int, seg: int,
options: Param) -> MOSLayInfo:
row_type = row_info.row_type
guard_ring: bool = options.get('guard_ring', row_info.guard_ring)
if guard_ring:
sub_type: MOSType = options.get('sub_type', row_type.sub_type)
else:
sub_type: MOSType = row_type.sub_type
lch = self.lch
sd_pitch = self.sd_pitch
mp_h: int = self.mos_config['mp_h']
mp_po_extx: int = self.mos_config['mp_po_extx']
md_w: int = self.mos_config['md_w']
mos_lay_table = self.tech_info.config['mos_lay_table']
mp_lp = mos_lay_table['MP']
g_info = self.get_conn_info(1, True)
d_info = self.get_conn_info(1, False)
threshold = row_info.threshold
ds_yt = row_info.ds_conn_y[1]
mp_yb, mp_yt = row_info['mp_y']
md_yb, md_yt = row_info['md_y']
md_yc = (md_yt + md_yb) // 2
ds_yb = md_yc - (ds_yt - md_yc)
fg = seg
num_wire = seg + 1
num_po = num_wire + 1
builder = LayoutInfoBuilder()
bbox = self._get_mos_active_rect_list(builder, row_info, fg, row_info.sub_width, sub_type)
# Connect gate to MP
mp_yc = (mp_yb + mp_yt) // 2
mp_delta = (sd_pitch + lch) // 2 + mp_po_extx
if num_po & 1:
num_vg = num_po // 2
if num_vg & 1:
# we have 3 PO left over in the middle
num_vg2 = (num_vg - 1) // 2
num_vgm = 2
else:
# we have 5 PO left over in the middle
num_vg2 = (num_vg - 2) // 2
num_vgm = 4
# draw middle vg
vgm_x = bbox.xm - ((num_vgm - 1) * sd_pitch) // 2
mp_xl = vgm_x - mp_delta
mp_xr = vgm_x + (num_vgm - 1) * sd_pitch + mp_delta
builder.add_rect_arr(mp_lp, BBox(mp_xl, mp_yb, mp_xr, mp_yt))
builder.add_via(g_info.get_via_info('M1_LiPo', vgm_x, mp_yc, mp_h,
nx=num_vgm, spx=sd_pitch))
# draw left/right vg
if num_vg2 > 0:
vg_pitch = 2 * sd_pitch
def _add_vg_half(vg_x: int) -> None:
xl = vg_x - mp_delta
xr = vg_x + mp_delta
builder.add_rect_arr(mp_lp, BBox(xl, mp_yb, xr, mp_yt),
nx=num_vg2, spx=vg_pitch)
builder.add_via(g_info.get_via_info('M1_LiPo', vg_x, mp_yc, mp_h,
nx=num_vg2, spx=vg_pitch))
_add_vg_half(0)
_add_vg_half((num_wire - 1) * sd_pitch - (num_vg2 - 1) * vg_pitch)
else:
# even number of PO, can connect pair-wise
num_vg = num_po // 2
vg_pitch = 2 * sd_pitch
builder.add_rect_arr(mp_lp, BBox(-mp_delta, mp_yb, mp_delta, mp_yt),
nx=num_vg, spx=vg_pitch)
builder.add_via(g_info.get_via_info('M1_LiPo', 0, mp_yc, mp_h,
nx=num_vg, spx=vg_pitch))
# connect drain/source to M1
m1_yc = (md_yb + md_yt) // 2
via_pitch = d_info.via_h + d_info.via_sp
vnum_bot = (md_yt - md_yb - d_info.via_bot_enc * 2 + d_info.via_sp) // via_pitch
vnum_top = (ds_yt - ds_yb - d_info.via_top_enc * 2 + d_info.via_sp) // via_pitch
vnum = min(vnum_top, vnum_bot)
builder.add_via(d_info.get_via_info('M1_LiAct', 0, m1_yc, md_w, ortho=False,
num=vnum, nx=num_wire, spx=sd_pitch))
edge_info = MOSEdgeInfo(mos_type=sub_type, has_od=True, is_sub=True)
be = BlkExtInfo(row_type, threshold, guard_ring, ImmutableList([(fg, sub_type)]),
ImmutableSortedDict())
wire_info = (0, num_wire, sd_pitch)
return MOSLayInfo(builder.get_info(bbox), edge_info, edge_info, be, be,
g_info=wire_info, d_info=wire_info, s_info=wire_info,
shorted_ports=ImmutableList())
def get_mos_conn_info(self, row_info: MOSRowInfo, conn_layer: int, seg: int, w: int, stack: int,
g_on_s: bool, options: Param) -> MOSLayInfo:
assert conn_layer == 1, 'currently only work for conn_layer = 1'
lch = self.lch
sd_pitch = self.sd_pitch
mp_h: int = self.mos_config['mp_h']
mp_po_extx: int = self.mos_config['mp_po_extx']
md_w: int = self.mos_config['md_w']
mos_lay_table = self.tech_info.config['mos_lay_table']
mp_lp = mos_lay_table['MP']
g_info = self.get_conn_info(1, True)
d_info = self.get_conn_info(1, False)
export_mid = options.get('export_mid', False)
export_mid = export_mid and stack == 2
row_type = row_info.row_type
ds_yb, ds_yt = row_info.ds_conn_y
threshold = row_info.threshold
mp_yb, mp_yt = row_info['mp_y']
md_yb, md_yt = row_info['md_y']
fg = seg * stack
wire_pitch = stack * sd_pitch
conn_pitch = 2 * wire_pitch
num_s = seg // 2 + 1
num_d = (seg + 1) // 2
s_xc = 0
d_xc = wire_pitch
if g_on_s:
num_g = fg // 2 + 1
g_xc = 0
else:
num_g = (fg + 1) // 2
g_xc = sd_pitch
g_pitch = 2 * sd_pitch
builder = LayoutInfoBuilder()
bbox = self._get_mos_active_rect_list(builder, row_info, fg, w, row_info.row_type)
# Connect gate to MP
mp_po_dx = (sd_pitch + lch) // 2 + mp_po_extx
builder.add_rect_arr(mp_lp, BBox(g_xc - mp_po_dx, mp_yb, g_xc + mp_po_dx, mp_yt),
nx=num_g, spx=g_pitch)
# connect gate to M1.
mp_yc = (mp_yb + mp_yt) // 2
builder.add_via(g_info.get_via_info('M1_LiPo', g_xc, mp_yc, mp_h,
nx=num_g, spx=g_pitch))
# connect drain/source to M1
m1_yc = (md_yb + md_yt) // 2
via_pitch = d_info.via_h + d_info.via_sp
vnum1 = (md_yt - md_yb - d_info.via_bot_enc * 2 + d_info.via_sp) // via_pitch
vnum2 = (ds_yt - ds_yb - d_info.via_top_enc * 2 + d_info.via_sp) // via_pitch
vnum = min(vnum1, vnum2)
builder.add_via(d_info.get_via_info('M1_LiAct', d_xc, m1_yc, md_w, ortho=False,
num=vnum, nx=num_d, spx=conn_pitch))
builder.add_via(d_info.get_via_info('M1_LiAct', s_xc, m1_yc, md_w, ortho=False,
num=vnum, nx=num_s, spx=conn_pitch))
if export_mid:
m_xc = sd_pitch
num_m = fg + 1 - num_s - num_d
m_info = (m_xc, num_m, wire_pitch)
builder.add_via(d_info.get_via_info('M1_LiAct', m_xc, m1_yc, md_w, ortho=False,
num=vnum, nx=num_m, spx=wire_pitch))
else:
m_info = None
edge_info = MOSEdgeInfo(mos_type=row_type, has_od=True, is_sub=False)
be = BlkExtInfo(row_type, threshold, False, ImmutableList([(fg, row_type)]),
ImmutableSortedDict())
return MOSLayInfo(builder.get_info(bbox), edge_info, edge_info, be, be,
g_info=(g_xc, num_g, g_pitch), d_info=(d_xc, num_d, conn_pitch),
s_info=(s_xc, num_s, conn_pitch), m_info=m_info,
shorted_ports=ImmutableList([MOSPortType.G]))
