33 5-bit Galois LFSR
33 : 5-bit Galois LFSR
- Author: Michael Bikovitsky
- Description: 5-bit Galois LFSR with configurable taps and initial state. Outputs a value every second.
- GitHub repository
- Clock: 625 Hz
How it works
https://en.wikipedia.org/wiki/Linear-feedback_shift_register#Galois_LFSRs
How to test
- Set the desired taps using the switches
- Assert the reset_taps pin
- Deassert reset_taps
- Set the desired initial state
- Assert reset_lfsr
- Deassert reset_lfsr
- Look at it go!
- Values between 0x00-0x0F are output as hex digits.
- Values between 0x10-0x1F are output as hex digits with a dot.
- Did you know there is a secret CPU inside?
IO
| # | Input | Output |
|---|---|---|
| 0 | clock | segment a |
| 1 | reset_lfsr | segment b |
| 2 | reset_taps | segment c |
| 3 | data_in1 | segment d |
| 4 | data_in2 | segment e |
| 5 | data_in3 | segment f |
| 6 | data_in4 | segment g |
| 7 | data_in5 | segment p |