R. Timothy Edwards

magic. Magic VLSI Layout Tool

qflow. Qflow full end-to-end digital synthesis flow for ASIC designs

XCircuit. XCircuit circuit drawing and schematic capture tool

netgen. Netgen complete LVS tool for comparing SPICE or verilog netlists

qrouter. Qrouter detail router for digital ASIC designs

irsim. IRSIM switch-level simulator for digital circuits

capiche. Parasitic capacitance analysis of foundry metal stackups

tutorial_layout. Repository of files associated with the webinar on analog layout using magic and klayout with Matt Venn.

sky130_ef_ip__opamp. Instrumentation amplifier (analog IP example)

ravenna_standalone. A lightweight version of the efabless Ravenna RISC-V processor chip design files for public access

caravel_openframe_project. Example digital project for the Efabless Caravel "openframe" harness

chipalooza_projects_1. Chipalooza challenge first test chip of projects

tclftdi. Tcl/Tk console based test system for development boards with FTDI chips. Also supports GPIB and instrumentation over ethernet.

chaos_automaton. Chaos Automaton (efabless Caravel harness digital project)

sky130_ef_ip__biasgen. Current bias generator circuit for distributing bias currents to analog circuits.

chipalooza_projects_2. 2nd test chip of Chipalooza analog IP

sky130_ef_ip__rdac3v_8bit. 8-bit resistor ladder DAC with 3.3V output range

sky130_ef_ip__rc_osc_16M. 16MHz (nominal) current-starved ring oscillator

sky130_ef_ip__xtal_osc_32k. Low power, low speed (32.768kHz) crystal oscillator circuit for sky130 technology

sky130_ef_ip__samplehold. Analog 3.3V sample and hold circuit, with buffered output

fracn_dll. Alternative version of the Caravel digital locked loop (DLL) with a fractional feedback divider

vsd_lvs_lab. Laboratory exercises for the VSD course on physical verification, part 5: LVS

sky130_ef_ip__cdac3v_12bit. 12-bit capacitive DAC

vsd_drc_lab. Laboratory exercises for the VSD course on physical verification, part 3, DRC

contact_programmed_ROM_cells. Set of layouts for contact-programmed ROM values of various bit widths.

sky130_ef_ip__ccomp3v. Continuous analog comparator, 1mV resolution

sky130_ef_ip__xtal_osc_16M. High speed (16MHz) crystal oscillator in sky130 technology

tt10-eink-driver. Driver for the Adafruit 2.13" 250x122 monochrome e-ink display

sky130_ef_ip__rheostat_8bit. 8-bit programmable rheostat with 50kohm end-to-end resistance, in the sky130 process.

ttihp-eink-driver. A simple test driver for the Adafruit 2.13" e-ink display board.

caravel_testing. Temprorary test of the project build procedure

tt10-sine-synth. Simple music synthesizer that generates sine waves over an octave, using the input PMOD pins for keys.

FOSSi_workshop. Files related to FOSSi Latch-Up 2024 workshop, Sunday, April 21, 2024.