SNLU273 December 2020 DS160PR810
Each channel of the DS160PR810 features a continuous-time linear equalizer (CTLE) that applies high-frequency boost and low-frequency attenuation to help equalize the frequency-dependent insertion loss effects of the passive channel. Table 2-4 shows available equalization boost through EQ control pins (EQ1_0 and EQ0_0 for channels 0–3 and EQ1_1 and EQ0_1 for channels 4–7) when in Pin Control mode (MODE = L0).
| EQ INDEX | EQ1 PIN LEVEL | EQ0 PIN LEVEL | CTLE BOOST AT 4 GHz (dB) | CTLE BOOST AT 8 GHz (dB) |
|---|---|---|---|---|
| 0 | L0 | L0 | –0.25 | –0.5 |
| 1 | L0 | L1 | 2.0 | 4.0 |
| 2 | L0 | L2 | 2.5 | 5.0 |
| 3 | L0 | L3 | 3.0 | 6.0 |
| 4 | L1 | L0 | 4.0 | 7.0 |
| 5 | L1 | L1 | 4.5 | 7.5 |
| 6 | L1 | L2 | 5.0 | 8.0 |
| 7 | L1 | L3 | 6.0 | 9.5 |
| 8 | L2 | L0 | 7.0 | 10 |
| 9 | L2 | L1 | 8.0 | 11 |
| 10 | L2 | L2 | 8.5 | 12.5 |
| 11 | L2 | L3 | 9.0 | 13 |
| 12 | L3 | L0 | 9.5 | 14.5 |
| 13 | L3 | L1 | 10.0 | 15 |
| 14 | L3 | L2 | 10.5 | 16.0 |
| 15 | L3 | L3 | 12 | 18 |
The equalization gain of each channel of each device can also be set by writing to SMBus, I2C registers in I2C Mode. Refer to the DS160PR810 Programming Guide (SNLU268) for details.