SNLU298 August 2021 DS320PR810
Each channel of the DS320PR810 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 8GHz (dB) | CTLE BOOST AT 16GHz (dB) |
|---|---|---|---|---|
| 0 | L0 | L0 | Refer to data sheet | Refer to data sheet |
| 1 | L0 | L1 | ||
| 2 | L0 | L2 | ||
| 3 | L0 | L3 | ||
| 4 | L0 | L4 | ||
| 5 | L1 | L0 | ||
| 6 | L1 | L1 | ||
| 7 | L1 | L2 | ||
| 8 | L1 | L3 | ||
| 9 | L1 | L4 | ||
| 10 | L2 | L0 | ||
| 11 | L2 | L1 | ||
| 12 | L2 | L2 | ||
| 13 | L2 | L3 | ||
| 14 | L2 | L4 | ||
| 15 | L3 | L0 | ||
| 16 | L3 | L1 | ||
| 17 | L3 | L2 | ||
| 18 | L3 | L3 | ||
| 19 | L3 | L4 |
The equalization gain of each channel of each device can also be set by writing to SMBus, I2C registers in I2C Mode.