.include sky130nm.lib
.subckt avsdpll_1v8 Clk_Ref Clk_Out_by_8 Clk_Out_by_4 Clk_Out_by_2 Clk_Out up down VCtrl GND
xx1 Clk_Ref Clk_Out_by_8 up down pd
xx2 up down VCtrl cp

*Loop Filter
r1 VCtrl rc1 490
c1 rc1 0 355f
r2 rc1 rc2 490
c2 rc2 0 350f
r3 rc2 rc3 490
c3 rc3 0 345f

xx3 rc3 Clk_Out vco

xx4 Clk_Out Clk_Out_by_2 fd
xx5 Clk_Out_by_2 Clk_Out_by_4 fd
xx6 Clk_Out_by_4 Clk_Out_by_8 fd


.ic v(VCtrl) = 0
.ic v(Clk_Out_by_2) = 0
.ic v(Clk_Out_by_4) = 1.8
.ic v(Clk_Out_by_8) = 0
.ends

*PFD
.subckt pd Clk1 Clk2 up down 
xm1 1 clk1 3 1 sky130_fd_pr__pfet_01v8 l=150n w=640n 
xm2 3 clk1 4 0 sky130_fd_pr__nfet_01v8 l=150n w=1800n
xm3 4 clk2 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n

xm4 1 clk2 6 1 sky130_fd_pr__pfet_01v8 l=150n w=640n 
xm5 6 clk2 7 0 sky130_fd_pr__nfet_01v8 l=150n w=1800n
xm6 7 clk1 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n

xm7 8 clk1 3 0 sky130_fd_pr__nfet_01v8 l=150n w=2400n 
xm8 clk1 clk1 8 1 sky130_fd_pr__pfet_01v8 l=150n w=640n

xm11 upb 8 1 1 sky130_fd_pr__pfet_01v8 l=150n w=720n
xm12 upb 8 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n

xm15 up upb 1 1 sky130_fd_pr__pfet_01v8 l=150n w=720n
xm16 up upb 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n
  
xm9 9 clk2 6 0 sky130_fd_pr__nfet_01v8 l=150n w=2400n
xm10 clk2 clk2 9 1 sky130_fd_pr__pfet_01v8 l=150n w=640n

xm13 downb 9 1 1 sky130_fd_pr__pfet_01v8 l=150n w=720n
xm14 downb 9 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n

xm17 down downb 1 1 sky130_fd_pr__pfet_01v8 l=150n w=720n
xm18 down downb 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n


*output cap
*c1 up 0 6f
*c2 down 0 6f

v1 1 0 1.8
.ends pd


*CP
.subckt cp up down out
xm43 3 2 1 1 sky130_fd_pr__pfet_01v8 l=150n w=18u 
xm44 out downb 3 1 sky130_fd_pr__pfet_01v8 l=150n w=420n 
xm31 out up 7 0 sky130_fd_pr__nfet_01v8 l=150n w=420n
xm32 7 8 0 0 sky130_fd_pr__nfet_01v8 l=150n w=4.8u

xm33 2 2 1 1 sky130_fd_pr__pfet_01v8 l=150n w=420n 
xm34 8 8 0 0 sky130_fd_pr__nfet_01v8 l=150n w=420n

xm35 9 down 3 1 sky130_fd_pr__pfet_01v8 l=150n w=5400n 
xm36 9 9 0 0 sky130_fd_pr__nfet_01v8 l=150n w=420n

xm37 10 10 1 1 sky130_fd_pr__pfet_01v8 l=150n w=420n 
xm38 10 upb 7 0 sky130_fd_pr__nfet_01v8 l=150n w=5400n

xm39 1 down downb 1 sky130_fd_pr__pfet_01v8 l=150n w=720n 
xm40 0 down downb 0 sky130_fd_pr__nfet_01v8 l=150n w=360n 

xm41 1 up upb 1 sky130_fd_pr__pfet_01v8 l=150n w=720n 
xm42 0 up upb 0 sky130_fd_pr__nfet_01v8 l=150n w=360n 

*r1 out rc 200
*c1 rc 0 8f

v1 1 0 1.8
.ends cp


*VCO
.subckt vco in 17
xm1 10 16 3 10 sky130_fd_pr__pfet_01v8 l=150n w=420n
xm2 3 16 9 9  sky130_fd_pr__nfet_01v8 l=150n w=420n

xm3 10 3 4 10 sky130_fd_pr__pfet_01v8 l=150n w=420n
xm4 4 3 9 9 sky130_fd_pr__nfet_01v8 l=150n w=420n

xm5 10 4 12 10 sky130_fd_pr__pfet_01v8 l=150n w=420n
xm6 12 4 9 9 sky130_fd_pr__nfet_01v8 l=150n w=420n

xm11 10 12 13 10 sky130_fd_pr__pfet_01v8 l=150n w=420n
xm12 13 12 9 9 sky130_fd_pr__nfet_01v8 l=150n w=420n

xm13 10 13 14 10 sky130_fd_pr__pfet_01v8 l=150n w=420n
xm14 14 13 9 9 sky130_fd_pr__nfet_01v8 l=150n w=420n

xm15 10 14 15 10 sky130_fd_pr__pfet_01v8 l=150n w=420n
xm16 15 14 9 9 sky130_fd_pr__nfet_01v8 l=150n w=420n

xm17 10 15 16 10 sky130_fd_pr__pfet_01v8 l=150n w=2400n
xm18 16 15 9 9 sky130_fd_pr__nfet_01v8 l=150n w=1200n

xm7 10 5 1 1 sky130_fd_pr__pfet_01v8 l=150n w=1080n
xm8 5 5 1 1 sky130_fd_pr__pfet_01v8 l=150n w=840n
xm9 5 in 0 0 sky130_fd_pr__nfet_01v8 l=150n w=840n
xm10 9 in 0 0 sky130_fd_pr__nfet_01v8 l=150n w=1080n

xm19 1 16 11 1 sky130_fd_pr__pfet_01v8 l=150n w=720n
xm20 11 16 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n

xm21 1 11 17 1 sky130_fd_pr__pfet_01v8 l=150n w=720n
xm22 17 11 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n

*c1 11 0 24f
v1 1 0 1.8
.ends vco


*FD
.subckt fd Clk 10

xm1 1 2 3 1 sky130_fd_pr__pfet_01v8 l=150n w=720n 
xm2 0 2 3 0 sky130_fd_pr__nfet_01v8 l=150n w=360n 

xm3 3 Clkb 4 1 sky130_fd_pr__pfet_01v8 l=150n w=420n 
xm4 3 Clk 4 0 sky130_fd_pr__nfet_01v8 l=150n w=840n 

xm7 1 4 5 1 sky130_fd_pr__pfet_01v8 l=150n w=720n 
xm8 0 4 5 0 sky130_fd_pr__nfet_01v8 l=150n w=360n 

xm9 5 Clk 6 1 sky130_fd_pr__pfet_01v8 l=150n w=420n 
xm10 5 Clkb 6 0 sky130_fd_pr__nfet_01v8 l=150n w=640n 

xm11 1 6 2 1 sky130_fd_pr__pfet_01v8 l=150n w=720n 
xm12 0 6 2 0 sky130_fd_pr__nfet_01v8 l=150n w=360n 

xm13 1 Clk Clkb 1 sky130_fd_pr__pfet_01v8 l=150n w=720n 
xm14 0 Clk Clkb 0 sky130_fd_pr__nfet_01v8 l=150n w=360n 

xm15 7 6 1 1 sky130_fd_pr__pfet_01v8 l=150n w=720n 
xm16 7 6 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n

xm19 1 7 10 1 sky130_fd_pr__pfet_01v8 l=150n w=720n
xm20 10 7 0 0 sky130_fd_pr__nfet_01v8 l=150n w=360n 


*c1 7 0 18f
v1 1 0 1.8
.ends fd