uses lfsr to generate and check prbs15 sequence
running clk, gnd pin1, set enable high. feedback prbs15 output to check, monitor error for pulses
| # | Input | Output |
|---|---|---|
| 0 | clock | clk |
| 1 | gnd | prbs15 |
| 2 | enable | error |
| 3 | check | checked |
| 4 | none | none |
| 5 | none | none |
| 6 | none | none |
| 7 | none | none |