ZHCSEW6G may   2013  – november 2020 DS90UB913A-Q1

PRODUCTION DATA  

  1.   1
  2. 1特性
  3. 2应用
  4. 3说明
  5. 4Revision History
  6.   Device Comparison Table
  7. 5Pin Configuration and Functions
    1.     Pin Functions: DS90UB913A-Q1 Serializer
  8. 6Specifications
    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  Recommended Serializer Timing For PCLK
    7. 6.7  AC Timing Specifications (SCL, SDA) - I2C-Compatible
    8. 6.8  Bidirectional Control Bus DC Timing Specifications (SCL, SDA) - I2C-Compatible
    9. 6.9  Timing Diagrams
    10. 6.10 Serializer Switching Characteristics
    11. 6.11 Typical Characteristics
  9. 7Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Serial Frame Format
      2. 7.3.2 Line Rate Calculations for the DS90UB913A/914A
      3. 7.3.3 Error Detection
      4. 7.3.4 Synchronizing Multiple Cameras
      5. 7.3.5 General Purpose I/O (GPIO) Descriptions
      6. 7.3.6 LVCMOS VDDIO Option
      7. 7.3.7 Pixel Clock Edge Select (TRFB / RRFB)
      8. 7.3.8 Power Down
    4. 7.4 Device Functional Modes
      1. 7.4.1 DS90UB913A/914A Operation with External Oscillator as Reference Clock
      2. 7.4.2 DS90UB913A/914A Operation with Pixel Clock from Imager as Reference Clock
      3. 7.4.3 MODE Pin on Serializer
      4. 7.4.4 Internal Oscillator
      5. 7.4.5 Built In Self Test
      6. 7.4.6 BIST Configuration and Status
      7. 7.4.7 Sample BIST Sequence
    5. 7.5 Programming
      1. 7.5.1 Programmable Controller
      2. 7.5.2 Description of Bidirectional Control Bus and I2C Modes
      3. 7.5.3 I2C Pass-Through
      4. 7.5.4 Slave Clock Stretching
      5. 7.5.5 ID[x] Address Decoder on the Serializer
      6. 7.5.6 Multiple Device Addressing
    6. 7.6 Register Maps
  10.   Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Power Over Coax
      2. 8.1.2 Power-Up Requirements and PDB Pin
      3. 8.1.3 AC Coupling
      4. 8.1.4 Transmission Media
    2. 8.2 Typical Applications
      1. 8.2.1 Coax Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 STP Application
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
  11.   Power Supply Recommendations
  12. 8Layout
    1. 8.1 Layout Guidelines
      1. 8.1.1 Interconnect Guidelines
    2. 8.2 Layout Example
  13. 9Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
  14.   Mechanical, Packaging, and Orderable Information

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7.5.2 Description of Bidirectional Control Bus and I2C Modes

The I2C-compatible interface allows programming of the DS90UB913A-Q1, DS90UB914A-Q1, or an external remote device (such as image sensor) through the bidirectional control channel. Register programming transactions to/from the DS90UB913A-Q1/914A-Q1 chipset are employed through the clock (SCL) and data (SDA) lines. These two signals have open drain I/Os and both lines must be pulled-up to VDDIO by an external resistor. Pullup resistors or current sources are required on the SCL and SDA busses to pull them high when they are not being driven low. A logic LOW is transmitted by driving the output low. Logic HIGH is transmitted by releasing the output and allowing it to be pulled-up externally. The appropriate pullup resistor values will depend upon the total bus capacitance and operating speed. The DS90UB913A I2C bus data rate supports up to 400 kbps according to I2C fast mode specifications.

For further description of general I2C communication, please refer to application note Understanding the I2C Bus (SLVA704). For more information on choosing appropriate pullup resistor values, please refer to application note I2C Bus Pullup Resistor Calculation (SLVA689).

GUID-16115718-9483-4C76-B686-5A48EDEEC1BD-low.gifFigure 7-9 Write Byte
GUID-A6984092-5A36-422A-8303-5A5629DCD777-low.gifFigure 7-10 Read Byte
GUID-7D108EB9-EED2-4F34-9B0A-0DC5308E2E43-low.gifFigure 7-11 Basic Operation
GUID-4ADBDA7E-7D9A-443B-8131-A0E7A29EACB9-low.gifFigure 7-12 Start and Stop Conditions
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