ZHCSTI6 October   2023 DS320PR410

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 DC Electrical Characteristics
    6. 6.6 High Speed Electrical Characteristics
    7. 6.7 SMBUS/I2C Timing Charateristics
    8. 6.8 Typical Characteristics
    9. 6.9 Typical Jitter Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Linear Equalization
      2. 7.3.2 Flat-Gain
      3. 7.3.3 Receiver Detect State Machine
    4. 7.4 Device Functional Modes
      1. 7.4.1 Active PCIe Mode
      2. 7.4.2 Active Buffer Mode
      3. 7.4.3 Standby Mode
    5. 7.5 Programming
      1. 7.5.1 Pin mode
        1. 7.5.1.1 Five-Level Control Inputs
      2. 7.5.2 SMBUS/I2C Register Control Interface
        1. 7.5.2.1 Shared Registers
        2. 7.5.2.2 Channel Registers
      3. 7.5.3 SMBus/I 2 C Primary Mode Configuration (EEPROM Self Load)
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 PCIe Reach Extension – x16 Lane Configuration
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 接收文档更新通知
    2. 9.2 支持资源
    3. 9.3 Trademarks
    4. 9.4 静电放电警告
    5. 9.5 术语表
  11. 10Mechanical, Packaging, and Orderable Information

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7.3.1 Linear Equalization

The DS320PR410 receivers feature 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. The receivers implement two stage linear equalizer for wide range of equalization capability. The equalizer stages also provide flexibility to make subtle modifications of mid-frequency boost for best EQ gain profile match with wide range of channel media characteristics. The EQ profile control feature is only available in SMBus/I2C mode. In Pin mode, the settings are optimized for FR4 traces.

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 SETTINGTYPICAL EQ BOOST (dB)
EQ INDEXPin modeSMBus/I2C Modeat 8 GHzat 16 GHz
EQ1EQ0eq_stage1_3:0eq_stage2_2:0eq_profile_3:0eq_stage1_bypass
0L0L000013.04.5
1L0L110014.06.5
2L0L230015.58.5
5L1L000106.511.0
6L1L110107.012.0
7L1L220108.012.5
8L1L330308.513.0
9L1L440309.014.0
10L2L0517010.015.0
11L2L1617010.515.5
12L2L2817011.516.5
13L2L31017012.517.5
14L2L410215013.018.0
15L3L011315013.519.0
16L3L112415014.020.0
17L3L213515015.021.0
18L3L314615015.522.0
19L3L415715016.022.5
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