SLLSF63C March   2018  – July 2024 TUSB1002A

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Switching Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 4-Level Control Inputs
      2. 6.3.2 Linear Equalization
      3. 6.3.3 Adjustable VOD Linear Range and DC Gain
      4. 6.3.4 USB3.2 Dual Channel Operation (MODE = “F”)
      5. 6.3.5 USB3.2 Single Channel Operation (MODE = “1”)
      6. 6.3.6 PCIe/SATA/SATA Express Redriver Operation (MODE = “R”; CFG1 = "0"; CFG2 = "0" )
      7. 6.3.7 Basic Redriver Operation (MODE = “0”)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown Mode
      2. 6.4.2 Disconnect Mode
    5. 6.5 U0 Mode
    6. 6.6 U1 Mode
    7. 6.7 U2/U3 Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical USB3.2 Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 ESD Protection
      4. 7.2.4 Application Curves
    3. 7.3 Typical SATA, PCIe and SATA Express Application
      1. 7.3.1 Design Requirements
      2. 7.3.2 Detailed Design Procedure
      3. 7.3.3 Application Curves
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.3 Adjustable VOD Linear Range and DC Gain

The CFG1 and CFG2 pins can be used to adjust the TUSB1002A output voltage swing linear range and receiver equalization DC gain. Table 6-3 details the available options.

For best performance, make sure to operate the TUSB1002A within the defined VOD linearity range. Keep the gain of the incoming VID to less than or equal to the TUSB1002A VOD linear range setting. The can be determined by Equation 1:

Equation 1. VID at 5GHz = VOD x (10-(Gv/20))

where

  • Gv = TUSB1002A Gain and VOD = TUSB1002A VOD linearity setting.

For example, for a VOD linearity range setting of 1200mV, the maximum incoming VID signal at 5GHz with a CHx_EQ[1:0] setting of 2 (5.5dB) is 1200 x (10-(5.5/20)) = 637mVpp. The TUSB1002A can operate outside VOD linear range, but the jitter will be higher.

Table 6-3 VOD Linear Range and DC Gain
SETTING # CFG1 PIN LEVEL CFG2 PIN LEVEL CH1 DC GAIN (dB) CH2 DC GAIN (dB) CH1 VOD LINEAR RANGE (mVpp) CH2 VOD LINEAR RANGE (mVpp)
1 0 0 +1 0 900 900
2 0 R 0 +1 900 900
3 0 F 0 0 900 900
4 0 1 +1 +1 900 900
5 R 0 0 0 1000 1000
6 R R +1 0 1000 1000
7 R F 0 -1 1000 1000
8 R 1 +2 +2 1000 1000
9 F 0 -1 -1 1200 1200
10 F R +2 +2 1200 1200
11 F F 0 0 1200 1200
12 F 1 +1 +1 1200 1200
13 1 0 +2 0 1200 1200
14 1 R 0 +2 1200 1200
15 1 F 0 +1 1200 1200
16 1 1 +1 0 1200 1200