update
diff --git a/xschem/Tx_line.sch b/xschem/Tx_line.sch
new file mode 100644
index 0000000..50ead79
--- /dev/null
+++ b/xschem/Tx_line.sch
@@ -0,0 +1,15 @@
+v {xschem version=3.0.0 file_version=1.2 }
+G {}
+K {}
+V {}
+S {}
+E {}
+N 90 -200 190 -200 {}
+N 90 -130 200 -130 {}
+C {ipin.sym} 90 -200 0 0 {name=p1 lab=INA
+}
+C {opin.sym} 190 -200 0 0 {name=p2 lab=OUTA
+}
+C {ipin.sym} 90 -130 0 0 {name=p3 lab=INB
+}
+C {opin.sym} 190 -130 0 0 {name=p4 lab=OUTB}
diff --git a/xschem/Tx_line.sym b/xschem/Tx_line.sym
new file mode 100644
index 0000000..666c5d0
--- /dev/null
+++ b/xschem/Tx_line.sym
@@ -0,0 +1,32 @@
+v {xschem version=3.0.0 file_version=1.2 }
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=X1"}
+V {}
+S {}
+E {}
+L 4 180 -100 200 -100 {}
+L 4 80 -120 80 -60 {}
+L 4 80 -60 180 -60 {}
+L 4 180 -120 180 -60 {}
+L 4 80 -120 180 -120 {}
+L 4 80 -100 180 -100 {}
+L 4 80 -80 180 -80 {}
+L 4 50 -100 80 -100 {}
+L 4 50 -80 200 -80 {}
+L 4 50 -160 70 -160 {}
+L 4 60 -160 60 -130 {}
+L 4 50 -130 70 -130 {}
+L 4 180 -160 180 -130 {}
+L 4 180 -130 200 -130 {}
+L 4 200 -160 200 -130 {}
+L 4 180 -160 200 -160 {}
+B 5 47.5 -102.5 52.5 -97.5 {name=INA
+dir=in}
+B 5 47.5 -82.5 52.5 -77.5 {name=INB
+dir=in}
+B 5 197.5 -102.5 202.5 -97.5 {name=OUTA
+dir=out}
+B 5 197.5 -82.5 202.5 -77.5 {name=OUTB
+dir=out}
diff --git a/xschem/user_analog_project_wrapper.sch b/xschem/user_analog_project_wrapper.sch
index f69667a..72da915 100644
--- a/xschem/user_analog_project_wrapper.sch
+++ b/xschem/user_analog_project_wrapper.sch
@@ -25,15 +25,15 @@
N 3630 -460 3730 -460 {
lab=REF}
N 3690 -380 3730 -380 {
-lab=io_in[14]}
-N 3690 -360 3730 -360 {
lab=io_in[15]}
-N 3690 -340 3730 -340 {
+N 3690 -360 3730 -360 {
lab=io_in[16]}
-N 3690 -320 3730 -320 {
+N 3690 -340 3730 -340 {
lab=io_in[17]}
-N 3690 -300 3730 -300 {
+N 3690 -320 3730 -320 {
lab=io_in[18]}
+N 3690 -300 3730 -300 {
+lab=io_in[19]}
N 3670 -240 3730 -240 {
lab=io_analog[10]}
N 3280 -190 3350 -190 {
@@ -103,9 +103,39 @@
N 4980 -370 5030 -370 {
lab=io_analog[7]}
N 4720 -250 4780 -250 {
-lab=gpio_analog[12]}
+lab=gpio_analog[7]}
N 4920 -400 4980 -400 {
lab=io_analog[6]}
+N 3750 80 3850 80 {
+lab=REF2}
+N 3810 160 3850 160 {
+lab=io_in[15]}
+N 3810 180 3850 180 {
+lab=io_in[16]}
+N 3810 200 3850 200 {
+lab=io_in[17]}
+N 3810 220 3850 220 {
+lab=io_in[18]}
+N 3810 240 3850 240 {
+lab=io_in[19]}
+N 3790 300 3850 300 {
+lab=io_analog[10]}
+N 4020 440 4110 440 {
+lab=vssa2}
+N 4020 -40 4090 -40 {
+lab=vdda2}
+N 4390 160 4520 160 {
+lab=txina}
+N 4390 220 4520 220 {
+lab=txinb}
+N 4520 180 4520 220 {
+lab=txinb}
+N 4670 160 4720 160 {
+lab=#net9}
+N 4670 180 4720 180 {
+lab=#net10}
+N 4920 -330 4980 -330 {
+lab=REF2}
C {devices/iopin.sym} 3240 -470 0 0 {name=p1 lab=vdda1}
C {devices/iopin.sym} 3240 -440 0 0 {name=p2 lab=vdda2}
C {devices/iopin.sym} 3240 -410 0 0 {name=p3 lab=vssa1}
@@ -144,11 +174,11 @@
C {devices/lab_pin.sym} 4340 -380 2 0 {name=l3 sig_type=std_logic lab=io_analog[9]}
C {devices/lab_pin.sym} 4340 -320 2 0 {name=l4 sig_type=std_logic lab=io_analog[8]}
C {devices/lab_pin.sym} 3660 -460 0 0 {name=l5 sig_type=std_logic lab=REF}
-C {devices/lab_pin.sym} 3690 -380 0 0 {name=l6 sig_type=std_logic lab=io_in[14]}
-C {devices/lab_pin.sym} 3690 -360 0 0 {name=l7 sig_type=std_logic lab=io_in[15]}
-C {devices/lab_pin.sym} 3690 -340 0 0 {name=l8 sig_type=std_logic lab=io_in[16]}
-C {devices/lab_pin.sym} 3690 -320 0 0 {name=l9 sig_type=std_logic lab=io_in[17]}
-C {devices/lab_pin.sym} 3690 -300 0 0 {name=l10 sig_type=std_logic lab=io_in[18]}
+C {devices/lab_pin.sym} 3690 -380 0 0 {name=l6 sig_type=std_logic lab=io_in[15]}
+C {devices/lab_pin.sym} 3690 -360 0 0 {name=l7 sig_type=std_logic lab=io_in[16]}
+C {devices/lab_pin.sym} 3690 -340 0 0 {name=l8 sig_type=std_logic lab=io_in[17]}
+C {devices/lab_pin.sym} 3690 -320 0 0 {name=l9 sig_type=std_logic lab=io_in[18]}
+C {devices/lab_pin.sym} 3690 -300 0 0 {name=l10 sig_type=std_logic lab=io_in[19]}
C {devices/lab_pin.sym} 3670 -240 0 0 {name=l11 sig_type=std_logic lab=io_analog[10]}
C {devices/lab_pin.sym} 3670 -580 0 0 {name=l12 sig_type=std_logic lab=vdda2}
C {devices/lab_pin.sym} 3370 210 2 0 {name=l13 sig_type=std_logic lab=la_oenb[127:0]}
@@ -178,5 +208,22 @@
C {lab_wire.sym} 4980 -380 0 1 {name=l36 sig_type=std_logic lab=REF}
C {lab_wire.sym} 5030 -370 0 1 {name=l37 sig_type=std_logic lab=io_analog[7]}
C {lab_wire.sym} 4980 -400 0 1 {name=l38 sig_type=std_logic lab=io_analog[6]}
-C {lab_wire.sym} 4720 -250 0 0 {name=l39 sig_type=std_logic lab=gpio_analog[12]}
+C {lab_wire.sym} 4720 -250 0 0 {name=l39 sig_type=std_logic lab=gpio_analog[7]}
C {lab_wire.sym} 4830 -490 0 0 {name=l40 sig_type=std_logic lab=vccd2}
+C {VCO.sym} 2270 680 0 0 {name=X3}
+C {devices/lab_pin.sym} 3780 80 0 0 {name=l41 sig_type=std_logic lab=REF2}
+C {devices/lab_pin.sym} 3810 160 0 0 {name=l42 sig_type=std_logic lab=io_in[15]}
+C {devices/lab_pin.sym} 3810 180 0 0 {name=l43 sig_type=std_logic lab=io_in[16]}
+C {devices/lab_pin.sym} 3810 200 0 0 {name=l44 sig_type=std_logic lab=io_in[17]}
+C {devices/lab_pin.sym} 3810 220 0 0 {name=l45 sig_type=std_logic lab=io_in[18]}
+C {devices/lab_pin.sym} 3810 240 0 0 {name=l46 sig_type=std_logic lab=io_in[19]}
+C {devices/lab_pin.sym} 3790 300 0 0 {name=l47 sig_type=std_logic lab=io_analog[10]}
+C {devices/lab_pin.sym} 4020 -40 0 0 {name=l48 sig_type=std_logic lab=vdda2
+}
+C {devices/lab_pin.sym} 4020 440 0 0 {name=l49 sig_type=std_logic lab=vssa2}
+C {/foss/designs/sloci_caravel_vco_fix/xschem/Tx_line.sym} 4470 260 0 0 {name=X4}
+C {devices/lab_pin.sym} 4490 160 0 0 {name=l50 sig_type=std_logic lab=txina
+}
+C {devices/lab_pin.sym} 4490 220 0 0 {name=l51 sig_type=std_logic lab=txinb
+}
+C {lab_wire.sym} 4980 -330 0 1 {name=l52 sig_type=std_logic lab=REF2}
