SNLU301 November   2021 SN75LVPE5412 , SN75LVPE5421

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  3. 2Description
    1. 2.1  Redriver-Mux 5-Level I/O Control Inputs
    2. 2.2  Redriver-Mux Modes of Operation
    3. 2.3  Redriver-Mux SMBus or I2C Register Control Interface
    4. 2.4  Redriver-Mux Equalization Control
    5. 2.5  Redriver-Mux RX Detect State Machine
    6. 2.6  Redriver-Mux DC Gain Control
    7. 2.7  DS320PR412-421EVM Global Controls
    8. 2.8  DS320PR412-421EVM Downstream Devices Control
    9. 2.9  DS320PR412-421EVM Upstream Devices Control
    10. 2.10 Quick-Start Guide (Pin Mode)
    11. 2.11 Quick-Start Guide (SMBus Slave Mode)
  4. 3Schematics
  5. 4PCB Layouts
  6. 5Bill of Materials

2.6 Redriver-Mux DC Gain Control

When operating in Pin Mode, the GAIN/SDA pin can be used to set the overall datapath DC (low frequency) gain of the DS320PR412, DS320PR421, SN75LVPE5412 and SN75LVPE5421 as shown in Table 2-6. Please refer to data sheet for actual Gain values.

Table 2-6 GAIN Control
GAIN/SDA PIN LEVELGAIN SETTING
L0Refer to data sheet
L1Refer to data sheet
L2Refer to data sheet
L3Refer to data sheet
L40 dB (Recommended for most use cases)

The DC gain of each channel of each device can also be set by writing to SMBus / I2C registers in Slave or Master Modes.