SNLU334 December   2023 DS320PR410

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1  DS320PR410 5-Level I/O Control Inputs
    2. 2.2  DS320PR410 Modes of Operation
    3. 2.3  DS320PR410 SMBus or I2C Register Control Interface
    4. 2.4  DS320PR410 Equalization Control
    5. 2.5  DS320PR410 RX Detect State Machine
    6. 2.6  DS320PR410 DC Gain Control
    7. 2.7  DS320PR410 EVM Global Controls
    8. 2.8  DS320PR410-RSC-EVM Downstream Devices Control
    9. 2.9  DS320PR410-RSC-EVM Upstream Devices Control
    10. 2.10 Quick-Start Guide (Pin Mode)
    11. 2.11 Quick-Start Guide (SMBus / I2C Secondary Mode)
  9. 3Implementation Results
    1. 3.1 Test Setup and Results
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 Board Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1.     Trademarks
  12. 6References

2.4 DS320PR410 Equalization Control

Each channel of the DS320PR410 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 3-4 shows available equalization boost through EQ control pins (EQ1 and EQ0) when in Pin Control mode (MODE = L0).

Table 2-4 Equalization Control Settings
EQ INDEXEQ1 PIN LEVELEQ0 PIN LEVELCTLE BOOST AT 8 GHz (dB)CTLE BOOST AT 16 GHz (dB)
0L0L0For CTLE boost values at 8 GHz, please reference the DS320PR410 data sheet (SNLS739).For CTLE boost values at 16 GHz, please reference the DS320PR410 data sheet (SNLS739).
1L0L1
2L0L2
5L1L0
6L1L1
7L1L2
8L1L3
9L1L4
10L2L0
11L2L1
12L2L2
13L2L3
14L2L4
15L3L0
16L3L1
17L3L2
18L3L3
19L3L4

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 DS320PR410 Programming Guide for details.