Table 7-1 provides available equalization boost through EQ control pins or SMBus/I2C registers. In Pin Control

mode EQ1 and EQ0 pins set equalization boost for channels 0-3. In I2C mode individual channels can be

independently programmed for EQ boost.

Table 7-1. Equalization Control Settings

EQUALIZATION SETTING

TYPICAL EQ BOOST (dB)

Pin mode

SMBus/I2C Mode

0

L0

L0

0

0

0

1

3.0

4.5

1

L0

L1

1

0

0

1

4.0

6.5

2

L0

L2

3

0

0

1

5.5

8.5

5

L1

L0

0

0

1

0

6.5

11.0

6

L1

L1

1

0

1

0

7.0

12.0

7

L1

L2

2

0

1

0

8.0

12.5

8

L1

L3

3

0

3

0

8.5

13.0

9

L1

L4

4

0

3

0

9.0

14.0

10

L2

L0

5

1

7

0

10.0

15.0

11

L2

L1

6

1

7

0

10.5

15.5

12

L2

L2

8

1

7

0

11.5

16.5

13

L2

L3

10

1

7

0

12.5

17.5

14

L2

L4

10

2

15

0

13.0

18.0

15

L3

L0

11

3

15

0

13.5

19.0

16

L3

L1

12

4

15

0

14.0

20.0

17

L3

L2

13

5

15

0

15.0

21.0

18

L3

L3

14

6

15

0

15.5

22.0

19

L3

L4

15

7

15

0

16.0

22.5

7.3.2 Flat-Gain

The GAIN pin can be used to set the overall data-path flat gain (DC and AC) of the DS320PR410 when the

device is in Pin mode. The pin GAIN sets the Flat-Gain for channels 0-3. In I2C mode each channel can be

independently set. Table 7-2 provides flat gain control configuration settings. In the default recommendation for

most systems will be GAIN = L4 (float) that provides flat gain of 0 dB.

The flat-gain and equalization of the DS320PR410 must be set such that the output signal swing at DC and high

frequency does not exceed the DC and AC linearity ranges of the devices, respectively.

Table 7-2. Flat Gain Configuration Settings

Pin mode GAIN

I2C Modeflat_gain_2:0

Flat Gain

L0

0

-5.6 dB

L1

1

-3.8 dB

L2

3

-1.2 dB

L4 (float)

5

0.6 dB (default recommendation)

L3

7

+2.6 dB

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DS320PR410

SNLS739 – OCTOBER 2023

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