ZHCSLM6A december   2021  – june 2023 TDP0604

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 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
    9. 6.9 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  4-Level Inputs
      2. 8.3.2  I/O Voltage Level Selection
      3. 8.3.3  HPD_OUT
      4. 8.3.4  Lane Control
      5. 8.3.5  Swap
      6. 8.3.6  Linear and Limited Redriver
      7. 8.3.7  Main Link Inputs
      8. 8.3.8  Receiver Equalizer
      9. 8.3.9  CTLE Bypass
      10. 8.3.10 Input Signal Detect
      11. 8.3.11 Main Link Outputs
        1. 8.3.11.1 Transmitter Bias
        2. 8.3.11.2 Transmitter Impedance Control
        3. 8.3.11.3 TX Slew Rate Control
        4. 8.3.11.4 TX Pre-Emphasis and De-Emphasis Control
        5. 8.3.11.5 TX Swing Control
      12. 8.3.12 DDC Buffer
      13. 8.3.13 HDMI DDC Capacitance
      14. 8.3.14 DisplayPort
    4. 8.4 Device Functional Modes
      1. 8.4.1 MODE Control
        1. 8.4.1.1 I2C Mode (MODE = "F")
        2. 8.4.1.2 Pin Strap Modes
          1. 8.4.1.2.1 Pin-Strap: HDMI 1.4 and HDMI 2.0 Functional Description
      2. 8.4.2 DDC Snoop Feature
        1. 8.4.2.1 HDMI Type
      3. 8.4.3 Low Power Modes
    5. 8.5 Programming
      1. 8.5.1 Pseudocode Examples
        1. 8.5.1.1 HDMI 2.0 Source Example with DDC Snoop and DDC Buffer Enabled
      2. 8.5.2 TDP0604 I2C Address Options
      3. 8.5.3 I2C Target Behavior
    6. 8.6 Register Maps
      1. 8.6.1 TDP0604 Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Source-Side Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Pre-Channel (LAB)
        2. 9.2.2.2 Post-Channel (LCD)
        3. 9.2.2.3 Common Mode Choke
        4. 9.2.2.4 ESD Protection
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 Supply Decoupling
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 接收文档更新通知
    3. 10.3 支持资源
    4. 10.4 Trademarks
    5. 10.5 静电放电警告
    6. 10.6 术语表
  12. 11Mechanical, Packaging, and Orderable Information

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8.3.11.1 Transmitter Bias

The TDP0604 transmitter supports both external (DC-coupled) and internal bias (AC-coupled) to a receiver. Selection between DC and AC-coupled is done through use of the AC_EN pin in pin-strap mode and TX_AC_EN register in I2C mode. The AC_EN pin informs the TDP0604 whether or not an external AC-coupling capacitor is present. When AC_EN is greater than VIH, then TDP0604 transmitters are internally biased to approximately VCC. For AC-coupled application, the AC_EN pin should be connected to greater than VIH and an external AC-coupling capacitor should be placed on each of the OUT_D[2:0] pins and the OUT_CLK pin. If the AC_EN pin is connected to less than VIL, then the AC_EN pin will inform TDP0604 that AC_EN pin is DC-coupled (externally biased) to the far-end HDMI compliant receiver.

Note: Figure 8-3 shows that if using AC-coupled TX mode (AC_EN = high) in an HDMI source application, then an external 499 Ω pull-down to GND must be placed on each OUT pin (OUT_D2:0p/n and OUT_CLKp/n) between the AC-coupling capacitor and the HDMI receptacle. The purpose of the 499 Ω resistor is to set the common mode voltage to HDMI compliant levels.
GUID-20210825-SS0I-VFN5-MFLD-58WQ9X6GDVTJ-low.svg Figure 8-2 DC-Coupled TX in HDMI Source Application (AC_EN = Low). External ESD is Not Shown.
GUID-20220701-SS0I-9DZ0-4V6J-TBFDVMGV9CHH-low.svg Figure 8-3 AC-Coupled TX in HDMI Source Application (AC_EN = High). External ESD is Not Shown.