ZHCSEG3C September   2015  – July 2016 SN65DP149 , SN75DP149

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 说明 （续）
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Power Supply Electrical Characteristics
    6. 7.6  Differential Input Electrical Characteristics
    7. 7.7  HDMI and DVI TMDS Output Electrical Characteristics
    8. 7.8  DDC, and I2C Electrical Characteristics
    9. 7.9  HPD Electrical Characteristics
    10. 7.10 HDMI and DVI Main Link Switching Characteristics
    11. 7.11 HPD Switching Characteristics
    12. 7.12 DDC and I2C Switching Characteristics
    13. 7.13 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Reset Implementation
      2. 9.3.2 Operation Timing
      3. 9.3.3 Input Lane Swap and Polarity Working
      4. 9.3.4 Main Link Inputs
      5. 9.3.5 Main Link Inputs Debug Tools
      6. 9.3.6 Receiver Equalizer
      7. 9.3.7 Termination Impedance Control
      8. 9.3.8 TMDS Outputs
        1. 9.3.8.1 Pre-Emphasis/De-Emphasis
    4. 9.4 Device Functional Modes
      1. 9.4.1 Retimer Mode
      2. 9.4.2 Redriver Mode
      3. 9.4.3 DDC Functional Description
    5. 9.5 Register Maps
      1. 9.5.1 DP-HDMI Adaptor ID Buffer
      2. 9.5.2 Local I2C Interface Overview
      3. 9.5.3 I2C Control Behavior
      4. 9.5.4 I2C Control and Status Registers
        1. 9.5.4.1 Bit Access Tag Conventions
        2. 9.5.4.2 CSR Bit Field Definitions
          1. 9.5.4.2.1 ID Registers
          2. 9.5.4.2.2 Misc Control
          3. 9.5.4.2.3 HDMI Control
          4. 9.5.4.2.4 Equalization Control Register
          5. 9.5.4.2.5 EyeScan Control Register
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Use Case of SNx5DP149
      2. 10.1.2 DDC Pullup Resistors
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
    3. 10.3 System Example
      1. 10.3.1 Compliance Testing
  11. 11Power Supply Recommendations
    1. 11.1 Power Management
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13器件和文档支持
    1. 13.1 相关链接
    2. 13.2 文档支持
      1. 13.2.1 相关文档
    3. 13.3 接收文档更新通知
    4. 13.4 社区资源
    5. 13.5 商标
    6. 13.6 静电放电警告
    7. 13.7 Glossary
  14. 14机械、封装和可订购信息

11 Power Supply Recommendations

11.1 Power Management

To minimize the power consumption of customer application, SNx5DP149 uses dual power supply. VCC is 3.3-V with 10% range to support the I/O voltage. The VDD is 1.00-V to 1.27-V range to supply the internal digital control circuit. SNx5DP149 operates in two different working states. See Table 15 for conditions for each mode. When OE is deasserted and then reasserted the device will rest to its default configurations. If different configurations were programmed using I2C then the device will have to be reprogrammed.

  • Power-down mode:
    • OE = Low puts the device into its lowest power state by shutting down all function blocks
      • When OE is re-asserted the transitions from L → H will create a reset and if the device is programmed through I2C it will have to be reprogrammed.
      • OE = High, HPD_SNK = Low
      • Writing a 1 to register 09h[3]
  • Normal operation: Working in redriver or retimer
  • When HPD asserts, the device CDR and output will enable based on the signal detector circuit result
  • HPD_SRC = HPD_SNK in all conditions. The HPD channel operational when VCC over 3-V.

Table 14. Control Logic and Mode of Operation

INPUTS(1) STATUS MODE
HPD_SNK OE Mode of Operation HPD_SRC IN_Dx SDA_CTL
SCL_CTL		 OUT_Dx
OUT_CLK		 DDC AUX_SRC±
(48 PIN ONLY)
H L X H High-Z Disabled High-Z Disabled Disable Power-down mode
L H X L High-Z Active High-Z Disabled Disable Power-down mode
H H X H High-Z Active High-Z Disabled Disable Power-down mode when a one is written to 09h[3]
H H Redriver H RX active Active TX active Active Active Normal operation
H H Retimer H RX active Active TX active Active Active Normal operation
(1) L = LOW, H = HIGH

TMDS output termination control impacts the operating power.

Table 15. Control Logic and Mode of Operation

INPUTS(1) STATUS MODE
HPD_SNK OE Mode of Operation HPD_SRC IN_Dx SDA_CTL
SCL_CTL		 OUT_Dx
OUT_CLK		 DDC
H L X H High-Z Disabled High-Z Disabled Power-down mode
L H X L High-Z Active High-Z Disabled Power-down mode
H H X H High-Z Active High-Z Disabled Power-down mode when a one is written to 09h[3]
H H Redriver H RX active Active TX active Active Normal operation
H H Retimer H RX active Active TX active Active Normal operation
(1) L = LOW, H = HIGH

TMDS output termination control impacts the operating power.

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