128 Linear Feedback Shift Register
128 : Linear Feedback Shift Register
- Author: Steve Jenson <[email protected]>
- Description: An implementation of a Linear Feedback Shift Register for ttihp0p3
- GitHub repository
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- Clock: 0 Hz
How it works
Read the ui_out pins, each read should be different than the last.
To reset the shift register, reset the chip, or set the 'write_enable' pin high after offering a value on ui_in as a seed.
How to test
Read several bytes from ui_in, they should each be different.
External hardware
No external hardware needed other than to read the pins.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Seed Bit 1 | LFSR Bit 1 | Write Enable |
| 1 | Seed Bit 2 | LFSR Bit 2 | |
| 2 | Seed Bit 3 | LFSR Bit 3 | |
| 3 | Seed Bit 4 | LFSR Bit 4 | |
| 4 | Seed Bit 5 | LFSR Bit 5 | |
| 5 | Seed Bit 6 | LFSR Bit 6 | |
| 6 | Seed Bit 7 | LFSR Bit 7 | |
| 7 | Seed Bit 8 | LFSR Bit 8 |