422 Simple Tapped Delay Line
422 : Simple Tapped Delay Line
- Author: Carson
- Description: Tapped Delay line formed with inverters and FFs
- GitHub repository
- Open in 3D viewer
- View in Wokwi
- Clock: 0 Hz
How it works
It's a tapped delay line! Useful perhaps for measuring time between start and stop signals. I have no idea how fast the signal will propagate through the delay line formed with the inverters, so this is a good characterisation test for future projects.
How to test
Launch a rising edge on start and some time after, launch it on stop, and then flick through the mux'es to see how far the start signal has travelled down the delay line!
External hardware
Signal generator and possibly a FPGA would be nice
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | start | tap0 | |
| 1 | stop | tap1 | |
| 2 | mux0 | tap2 | |
| 3 | mux1 | tap3 | |
| 4 | mux2 | tap4 | |
| 5 | ff_r | tap5 | |
| 6 | tap6 | ||
| 7 | tap7 |