SLLU318 April 2020 TUSB1146
Each of the TUSB1146 receiver lanes has individual controls for receiver equalization. Table 2, Table 3, and Table 4 detail the gain values for each available combination for downstream, upstream, and all DisplayPort configurations.
| Level | Settings |
|---|---|
| 0 | Option 1: Tie 1 kΩ 5% to GND
Option 2: Tie directly to GND |
| R | Tie 20 kΩ, 5% to GND |
| F | Float (leave pin open) |
| 1 | Option 1: Tie 1 kΩ 5% to VCC
Option 2: Tie directly to VCC |
| USB3.1 Downstream Facing Ports | USB3.1 Upstream Facing Port | ||||||
|---|---|---|---|---|---|---|---|
| EQ Setting # | EQ1 Pin Level | EQ0 Pin Level | EQ Gain @ 5 GHz (dB) | SSEQ1 Pin Level | SSEQ0 Pin Level | EQ Gain @ 5 GHz (dB) | |
| 0 | 0 | 0 | -1 | 0 | 0 | -0.5 | |
| 1 | 0 | R | 1.3 | 0 | R | 1.7 | |
| 2 | 0 | F | 3 | 0 | F | 3.4 | |
| 3 | 0 | 1 | 4.5 | 0 | 1 | 5 | |
| 4 | R | 0 | 5.5 | R | 0 | 6 | |
| 5 | R | R | 6 | R | R | 7 | |
| 6 | R | F | 7.5 | R | F | 8 | |
| 7 | R | 1 | 8.3 | R | 1 | 8.7 | |
| 8 | F | 0 | 9 | F | 0 | 9.4 | |
| 9 | F | R | 9.5 | F | R | 10 | |
| 10 | F | F | 10 | F | F | 10.6 | |
| 11 | F | 1 | 10.5 | F | 1 | 11 | |
| 12 | 1 | 0 | 11 | 1 | 0 | 11.5 | |
| 13 | 1 | R | 11.3 | 1 | R | 11.9 | |
| 14 | 1 | F | 11.6 | 1 | F | 12.1 | |
| 15 | 1 | 1 | 12 | 1 | 1 | 12.5 | |
| All DisplayPort Lanes | |||
|---|---|---|---|
| EQ Setting # | DPEQ1 Pin Level | DPEQ0 Pin Level | EQ Gain @ 5 GHz (dB) |
| 0 | 0 | 0 | -0.4 |
| 1 | 0 | R | 1.3 |
| 2 | 0 | F | 2.8 |
| 3 | 0 | 1 | 4.1 |
| 4 | R | 0 | 6.1 |
| 5 | R | R | 6.2 |
| 6 | R | F | 7.1 |
| 7 | R | 1 | 7.9 |
| 8 | F | 0 | 8.6 |
| 9 | F | R | 9.2 |
| 10 | F | F | 9.8 |
| 11 | F | 1 | 10.3 |
| 12 | 1 | 0 | 10.7 |
| 13 | 1 | R | 11.2 |
| 14 | 1 | F | 11.5 |
| 15 | 1 | 1 | 12 |