The Nixel 512 chip is a recording peripheral that can implement the Synapse Electrical Broadband node. It supports the following ElectricalBroadbandConfig parameters:
| Parameter name | Parameter options |
|---|---|
bit_width | 12 |
sample_rate | 4000, 8000, 16000, 20000, 25000, 32000 |
gain | 200 |
low_cutoff_hz | 57, 66, 77, 92, 114, 154, 234, 457 (defaults 92 if field is empty) |
high_cutoff_hz | 1445, 1862, 2630, 4365, 13489 (defaults 13489 if field is empty) |
channels | valid electrode_id and reference_id depend on the desired reference mode |
You need to select pairs of electrodes according to the following rules:
electrode_id: Select of set of even numbered electrodes which fall between 0–511, inclusive.reference_id: For a givenelectrode_idn,reference_id= n+1
electrode_id: All even OR all odd values between 0–511, inclusive.reference_id: Refer to the following table:
electrode_id | Valid reference_id |
|---|---|
0–7 | 512 |
8–127 | 513 |
128–135 | 514 |
136–255 | 515 |
256–263 | 516 |
264–383 | 517 |
384–391 | 518 |
392–511 | 519 |
To use PCB ground as your reference signal:
electrode_id: All even OR all odd values between 0–511, inclusive.reference_id: 520
This recording peripheral generates test data for benchmarking and debugging SciFi. It can implement the Electrical Broadband node. The peripheral will attempt to match the bit-rate requested by the supplied config parameters. It supports the following ElectricalBroadbandConfig parameters:
| Parameter name | Parameter options |
|---|---|
bit_width | 12 |
sample_rate | 0–10000 |
gain | Ignored |
low_cutoff_hz | Ignored |
high_cutoff_hz | Ignored |
channels | electrode_id and reference_id are ignored. Test data will output the id of each configured channel at the requested sample rate |