Texas Instruments DS320PR810-RSC-EVM, User Manual, Page: 6 / 32

2.4 DS320PR810 Equalization Control
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).
Table 2-4. Equalization Control Settings
EQ INDEX EQ1 PIN LEVEL EQ0 PIN LEVEL
CTLE BOOST AT 8 GHz
(dB)
CTLE BOOST AT 16 GHz
(dB)
0 L0 L0 0 0
1 L0 L1 1.2 2.0
2 L0 L2 2.4 4.0
3 L0 L3 3.6 6.0
4 L0 L4 4.8 8.0
5 L1 L0 5.6 10.0
6 L1 L1 6.2 11.0
7 L1 L2 6.9 12.0
8 L1 L3 7.5 13.0
9 L1 L4 8.1 14.0
10 L2 L0 8.7 15.0
11 L2 L1 9.1 16.0
12 L2 L2 9.4 17.0
13 L2 L3 10.0 18.0
14 L2 L4 10.8 19.0
15 L3 L0 11.2 20.0
16 L3 L1 12.0 21.0
17 L3 L2 12.8 22.0
18 L3 L3 13.2 23.0
19 L3 L4 14.0 24.0
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
DS320PR810 Programming Guide for details.
Description www.ti.com
6 DS320PR810-RSC-EVM User's Guide SNLU297 – MAY 2021
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