sky130_fd_io__top_gpiov2 REF_PAD (.IN_H(),                 //for analog output from PAD                                   .PAD_A_NOESD_H(),                                                                      .PAD_A_ESD_0_H(REF_pll), // REF_pll is wire from core                                                                      .PAD_A_ESD_1_H(),                                                                      .PAD(REF),  // REF is wire to PAD                                                                      .DM(000),                                    .HLD_H_N(1),                                                                     .IN(),                                                                      .INP_DIS(1),                                    .IB_MODE_SEL(),                                    .ENABLE_H(0),                                    .ENABLE_VDDA_H(1),                                    .ENABLE_INP_H(),                                    .OE_N(1),                                   .TIE_HI_ESD(),                                    .TIE_LO_ESD(),                                    .SLOW(0),                                    .VTRIP_SEL(),                                    .HLD_OVR(0),                                    .ANALOG_EN(),                                    .ANALOG_SEL(),                                    .ENABLE_VDDIO(),                                    .ENABLE_VSWITCH_H(),                                   .ANALOG_POL(),                                    .OUT(),                                    .AMUXBUS_A(),                                                                      .AMUXBUS_B(),                                   .VSSA(VSSA),             // VSSA,VDDA,VDDD,VSSD are wire signals defined above                                   .VDDA(VDDA),                                    .VSWITCH(),                                    .VDDIO_Q(),                                    .VCCHIB(),                                    .VDDIO(),                                    .VCCD(VDDD),                                    .VSSIO(),                                   .VSSD(VSSD),                                    .VSSIO_Q()                                 );