SNLU301 November 2021 SN75LVPE5412 , SN75LVPE5421
Each channel of the DS320PR412, DS320PR421, SN75LVPE5412 and SN75LVPE5421 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 index through EQ control pins (EQ1 and EQ0) for all channels when in Pin Control mode (MODE = L0). Please refer to data sheet for actual EQ Gain values.
| EQ INDEX | EQ1 PIN LEVEL | EQ0 PIN LEVEL |
|---|---|---|
| 0 | L0 | L0 |
| 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.