Added soft-connect test for valid layout

This commit is contained in:
Matthias Koefferlein 2024-03-20 23:29:25 +01:00
parent 962e212e19
commit 265b5680de
5 changed files with 324 additions and 0 deletions

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@ -307,3 +307,9 @@ TEST(50_SoftConnection)
run_test (_this, "soft_connect1", "soft_connect1.gds", true, false /*no LVS*/);
}
// No errors
TEST(51_SoftConnection)
{
run_test (_this, "soft_connect2", "soft_connect2.gds", true, false /*no LVS*/);
}

13
testdata/lvs/soft_connect2.cir vendored Normal file
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@ -0,0 +1,13 @@
* Extracted by KLayout
.SUBCKT TOP A Q VDD SUBSTRATE|VSS
X$1 SUBSTRATE|VSS VDD VDD \$1 Q SUBSTRATE|VSS INV
X$2 SUBSTRATE|VSS VDD VDD A \$1 SUBSTRATE|VSS INV
.ENDS TOP
.SUBCKT INV \$1 \$2 \$3 \$4 \$5 SUBSTRATE
M$1 \$2 \$4 \$5 \$3 PMOS L=0.25U W=0.95U AS=0.73625P AD=0.73625P PS=3.45U
+ PD=3.45U
M$2 \$1 \$4 \$5 SUBSTRATE NMOS L=0.25U W=0.95U AS=0.73625P AD=0.73625P PS=3.45U
+ PD=3.45U
.ENDS INV

BIN
testdata/lvs/soft_connect2.gds vendored Normal file

Binary file not shown.

213
testdata/lvs/soft_connect2.l2n vendored Normal file
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@ -0,0 +1,213 @@
#%l2n-klayout
W(TOP)
U(0.001)
L(l3 '1/0')
L(l4 '3/0')
L(l15 '3/1')
L(l8 '4/0')
L(l11 '5/0')
L(l12 '6/0')
L(l16 '6/1')
L(l13 '7/0')
L(l14 '8/0')
L(l17 '8/1')
L(l7)
L(l10)
L(l2)
L(l9)
L(l6)
C(l3 l3 l10)
C(l4 l4 l15 l11)
C(l15 l4 l15)
C(l8 l8 l12 l10 l2 l9 l6)
CS(l8 l10 l2 l9 l6)
C(l11 l4 l11 l12)
CS(l11 l4)
C(l12 l8 l11 l12 l16 l13)
C(l16 l12 l16)
C(l13 l12 l13 l14)
C(l14 l13 l14 l17)
C(l17 l14 l17)
C(l7 l7)
C(l10 l3 l8 l10)
CS(l10 l3)
C(l2 l8 l2)
C(l9 l8 l9)
C(l6 l8 l6)
G(l7 SUBSTRATE)
G(l9 SUBSTRATE)
GS(l9 SUBSTRATE)
K(PMOS MOS4)
K(NMOS MOS4)
D(D$PMOS PMOS
T(S
R(l2 (-900 -475) (775 950))
)
T(G
R(l4 (-125 -475) (250 950))
)
T(D
R(l2 (125 -475) (775 950))
)
T(B
R(l3 (-125 -475) (250 950))
)
)
D(D$NMOS NMOS
T(S
R(l6 (-900 -475) (775 950))
)
T(G
R(l4 (-125 -475) (250 950))
)
T(D
R(l6 (125 -475) (775 950))
)
T(B
R(l7 (-125 -475) (250 950))
)
)
X(INV
R((-1500 -800) (3000 4600))
N(1
R(l8 (290 -310) (220 220))
R(l8 (-220 180) (220 220))
R(l12 (-290 -690) (360 760))
R(l13 (-305 -705) (250 250))
R(l13 (-250 150) (250 250))
R(l14 (-2025 -775) (3000 900))
R(l6 (-1375 -925) (775 950))
)
N(2
R(l8 (290 2490) (220 220))
R(l8 (-220 180) (220 220))
R(l12 (-290 -690) (360 760))
R(l13 (-305 -705) (250 250))
R(l13 (-250 150) (250 250))
R(l14 (-2025 -775) (3000 900))
R(l2 (-1375 -925) (775 950))
)
N(3
R(l3 (-1500 1800) (3000 2000))
)
N(4
R(l4 (-125 -250) (250 2500))
R(l4 (-250 -3050) (250 1600))
R(l4 (-250 1200) (250 1600))
)
N(5
R(l8 (-510 -310) (220 220))
R(l8 (-220 180) (220 220))
R(l8 (-220 2180) (220 220))
R(l8 (-220 180) (220 220))
R(l12 (-290 -3530) (360 2840))
R(l12 (-360 -2800) (360 760))
R(l12 (-360 2040) (360 760))
R(l2 (-680 -855) (775 950))
R(l6 (-775 -3750) (775 950))
)
N(6 I(SUBSTRATE))
P(1)
P(2)
P(3)
P(4)
P(5)
P(6 I(SUBSTRATE))
D(1 D$PMOS
Y(0 2800)
E(L 0.25)
E(W 0.95)
E(AS 0.73625)
E(AD 0.73625)
E(PS 3.45)
E(PD 3.45)
T(S 5)
T(G 4)
T(D 2)
T(B 3)
)
D(2 D$NMOS
Y(0 0)
E(L 0.25)
E(W 0.95)
E(AS 0.73625)
E(AD 0.73625)
E(PS 3.45)
E(PD 3.45)
T(S 5)
T(G 4)
T(D 1)
T(B 6)
)
)
X(TOP
R((600 800) (8880 4600))
N(1
R(l4 (2920 2600) (2880 400))
R(l11 (-300 -300) (200 200))
R(l12 (-300 -300) (690 400))
)
N(2 I(A)
R(l4 (6600 2600) (2880 400))
R(l15 (-2380 -200) (0 0))
)
N(3 I(Q)
R(l12 (1810 2600) (690 400))
R(l16 (-400 -200) (0 0))
)
N(4 I(VDD)
R(l3 (4000 3400) (1600 2000))
R(l3 (-5000 -2000) (1000 2000))
R(l3 (6400 -2000) (1000 2000))
R(l8 (-8000 -900) (200 200))
R(l8 (-200 -600) (200 200))
R(l8 (7200 200) (200 200))
R(l8 (-200 -600) (200 200))
R(l12 (-7900 -350) (800 900))
R(l12 (6600 -900) (800 900))
R(l13 (-7900 -350) (200 200))
R(l13 (-200 -600) (200 200))
R(l13 (7200 200) (200 200))
R(l13 (-200 -600) (200 200))
R(l14 (-4400 -350) (1200 900))
R(l14 (-4800 -900) (1000 900))
R(l14 (6400 -900) (1000 900))
R(l17 (-4800 -450) (0 0))
)
N(5 I('SUBSTRATE,VSS')
R(l8 (1000 1700) (200 200))
R(l8 (-200 -600) (200 200))
R(l8 (7200 200) (200 200))
R(l8 (-200 -600) (200 200))
R(l12 (-7900 -350) (800 900))
R(l12 (6600 -900) (800 900))
R(l13 (-7900 -350) (200 200))
R(l13 (-200 -600) (200 200))
R(l13 (7200 200) (200 200))
R(l13 (-200 -600) (200 200))
R(l14 (-4400 -350) (1200 900))
R(l14 (-4800 -900) (1000 900))
R(l14 (6400 -900) (1000 900))
R(l17 (-4800 -550) (0 0))
)
P(2 I(A))
P(3 I(Q))
P(4 I(VDD))
P(5 I('SUBSTRATE,VSS'))
X(1 INV Y(3000 1600)
P(0 5)
P(1 4)
P(2 4)
P(3 1)
P(4 3)
P(5 5)
)
X(2 INV Y(6600 1600)
P(0 5)
P(1 4)
P(2 4)
P(3 2)
P(4 1)
P(5 5)
)
)

92
testdata/lvs/soft_connect2.lvs vendored Normal file
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$lvs_test_source && source($lvs_test_source)
if $lvs_test_target_l2n
report_netlist($lvs_test_target_l2n)
else
report_netlist
end
writer = write_spice(true, false)
$lvs_test_target_cir && target_netlist($lvs_test_target_cir, writer, "Extracted by KLayout")
deep
# Drawing layers
nwell = input(1, 0)
active = input(2, 0)
nplus = input(2, 1)
pplus = input(2, 2)
poly = input(3, 0)
poly_lbl = input(3, 1)
diff_cont = input(4, 0)
poly_cont = input(5, 0)
metal1 = input(6, 0)
metal1_lbl = input(6, 1)
via1 = input(7, 0)
metal2 = input(8, 0)
metal2_lbl = input(8, 1)
# Bulk layer for terminal provisioning
bulk = polygon_layer
psd = nil
nsd = nil
# Computed layers
active_in_nwell = active & nwell
pactive = active_in_nwell & pplus
ntie = active_in_nwell & nplus
pgate = pactive & poly
psd = pactive - pgate
active_outside_nwell = active - nwell
nactive = active_outside_nwell & nplus
ptie = active_outside_nwell & pplus
ngate = nactive & poly
nsd = nactive - ngate
# Device extraction
# PMOS transistor device extraction
extract_devices(mos4("PMOS"), { "SD" => psd, "G" => pgate, "W" => nwell,
"tS" => psd, "tD" => psd, "tG" => poly })
# NMOS transistor device extraction
extract_devices(mos4("NMOS"), { "SD" => nsd, "G" => ngate, "W" => bulk,
"tS" => nsd, "tD" => nsd, "tG" => poly })
# Define connectivity for netlist extraction
# Inter-layer
soft_connect(diff_cont, psd)
soft_connect(diff_cont, nsd)
soft_connect(diff_cont, ptie)
soft_connect(diff_cont, ntie)
soft_connect(ntie, nwell)
soft_connect(poly_cont, poly)
connect(diff_cont, metal1)
connect(poly_cont, metal1)
connect(metal1, via1)
connect(via1, metal2)
# attach labels
connect(poly, poly_lbl)
connect(metal1, metal1_lbl)
connect(metal2, metal2_lbl)
# Global
connect_global(bulk, "SUBSTRATE")
soft_connect_global(ptie, "SUBSTRATE")
# Netlist section (NOTE: we only check log here)
netlist
netlist.simplify