JAJSC25I March   2014  – July 2019 TPS23861

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      概略回路図
  4. 4 改訂履歴
  5. 5 概要（続き）
  6. 6 Pin Configuration and Functions
    1.     Pin 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 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
      1. 8.1.1 Detailed Pin Description
      2. 8.1.2 I2C Detailed Pin Description
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Detection Resistance Measurement
      2. 8.3.2  Physical Layer Classification
      3. 8.3.3  Class and Detect Fields
      4. 8.3.4  Register State Following a Fault
      5. 8.3.5  Disconnect
      6. 8.3.6  Disconnect Threshold
      7. 8.3.7  Fast Shutdown Mode
      8. 8.3.8  Legacy Device Detection
      9. 8.3.9  VPWR Undervoltage and UVLO Events
      10. 8.3.10 Timer-Deferrable Interrupt Support
      11. 8.3.11 A/D Converter and I2C Interface
      12. 8.3.12 Independent Operation when the AUTO Bit is Set
      13. 8.3.13 I2C Slave Address and AUTO Bit Programming
    4. 8.4 Device Functional Modes
      1. 8.4.1 Off
      2. 8.4.2 Manual
      3. 8.4.3 Semi-Auto
      4. 8.4.4 Auto
      5. 8.4.5 Push-Button Power On Response
      6. 8.4.6 TSTART Indicators of Detect and Class Failures
      7. 8.4.7 Device Power On Initialization
    5. 8.5 Register Map – I2C-Addressable
      1. 8.5.1  Interrupt Register
      2. 8.5.2  Interrupt Enable Register
      3. 8.5.3  Power Event Register
      4. 8.5.4  Detection Event Register
      5. 8.5.5  Fault Event Register
      6. 8.5.6  Start/ILIM Event Register
      7. 8.5.7  Supply Event Register
      8. 8.5.8  Port n Status Register
        1. 8.5.8.1 Port 1 Status Register
        2. 8.5.8.2 Port 2 Status Register
        3. 8.5.8.3 Port 3 Status Register
        4. 8.5.8.4 Port 4 Status Register
      9. 8.5.9  Power Status Register
      10. 8.5.10 I2C Slave Address Register
      11. 8.5.11 Operating Mode Register
      12. 8.5.12 Disconnect Enable Register
      13. 8.5.13 Detect/Class Enable Register
      14. 8.5.14 Port Power Priority Register
      15. 8.5.15 Timing Configuration Register
      16. 8.5.16 General Mask 1 Register
      17. 8.5.17 Detect/Class Restart Register
      18. 8.5.18 Power Enable Register
      19. 8.5.19 Reset Register
      20. 8.5.20 Legacy Detect Mode Register
      21. 8.5.21 Two-Event Classification Register
      22. 8.5.22 Interrupt Timer Register
      23. 8.5.23 Disconnect Threshold Register
        1. 8.5.23.1 Bits Description
      24. 8.5.24 ICUTnm CONFIG Register
        1. 8.5.24.1 ICUT21 CONFIG Register
        2. 8.5.24.2 ICUT43 CONFIG Register
        3. 8.5.24.3 Bits Description
      25. 8.5.25 Temperature Register
      26. 8.5.26 Input Voltage Register
      27. 8.5.27 Port n Current Register
        1. 8.5.27.1 Port 1 Current Register
        2. 8.5.27.2 Port 2 Current Register
        3. 8.5.27.3 Port 3 Current Register
        4. 8.5.27.4 Port 4 Current Register
      28. 8.5.28 Port n Voltage Register
        1. 8.5.28.1 Port 1 Voltage Register
        2. 8.5.28.2 Port 2 Voltage Register
        3. 8.5.28.3 Port 3 Voltage Register
        4. 8.5.28.4 Port 4 Voltage Register
      29. 8.5.29 PoE Plus Register
      30. 8.5.30 Firmware Revision Register
      31. 8.5.31 I2C Watchdog Register
      32. 8.5.32 Device ID Register
      33. 8.5.33 Cool Down/Gate Drive Register
      34. 8.5.34 Port n Detect Resistance Register
        1. 8.5.34.1 Port 1 Detect Resistance Register
          1. 8.5.34.1.1 Port 2 Detect Resistance Register
          2. 8.5.34.1.2 Port 3 Detect Resistance Register
          3. 8.5.34.1.3 Port 4 Detect Resistance Register
      35. 8.5.35 Port n Detect Voltage Difference Register
        1. 8.5.35.1 Port 1 Detect Voltage Difference Register
        2. 8.5.35.2 Port 2 Detect Voltage Difference Register
        3. 8.5.35.3 Port 3 Detect Voltage Difference Register
        4. 8.5.35.4 Port 4 Detect Voltage Difference Register
      36. 8.5.36 Reserved Registers
  9. 9 Application and Implementation
    1. 9.1 Introduction to PoE
    2. 9.2 Application Information
      1. 9.2.1 Kelvin Current Sensing Resistor
      2. 9.2.2 Connections on Unused Ports
    3. 9.3 Typical Application
      1. 9.3.1 Two Port, Auto Mode Application with External Port Reset
        1. 9.3.1.1 Design Requirements
      2. 9.3.2 Four Port, Auto Mode Application
        1. 9.3.2.1 Design Requirements
      3. 9.3.3 Eight Port, Semi-Auto Mode Application Using MSP430 Micro-Controller
        1. 9.3.3.1 Design Requirements
      4. 9.3.4 Detailed Design Procedure
        1. 9.3.4.1 Power Pin Bypass Capacitors
        2. 9.3.4.2 Per Port Components
        3. 9.3.4.3 System Level Components (not shown in the schematic diagrams)
      5. 9.3.5 Application Curves
    4. 9.4 System Examples
      1. 9.4.1 Overcurrent and Overload Protection
      2. 9.4.2 Inrush Protection
      3. 9.4.3 ICUT Current Limit
      4. 9.4.4 Foldback Protection (ILIM)
      5. 9.4.5 Kelvin Current Sensing Resistor
  10. 10Power Supply Recommendations
    1. 10.1 VDD
    2. 10.2 VPWR
    3. 10.3 VPWR-RESET Sequencing
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Port Current Kelvin Sensing
    2. 11.2 Layout Example
      1. 11.2.1 Component Placement and Routing Guidelines
        1. 11.2.1.1 Power Pin Bypass Capacitors
        2. 11.2.1.2 Per-Port Components
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントのサポート
      1. 12.1.1 関連資料
    2. 12.2 ドキュメントの更新通知を受け取る方法
    3. 12.3 コミュニティ・リソース
    4. 12.4 商標
    5. 12.5 静電気放電に関する注意事項
    6. 12.6 Glossary
  13. 13メカニカル、パッケージ、および注文情報

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

8.5.4 Detection Event Register

Command = 04h with 1 Data Byte, Read Only

Command = 05h with 1 Data Byte, Clear on Read

BITS D7 D6 D5 D4 D3 D2 D1 D0
BIT NAME CLSC4 CLSC3 CLSC2 CLSC1 DETC4 DETC3 DETC2 DETC1
RESET or POR VALUE 0 0 0 0 0 0 0 0

Active high, each bit corresponds to a particular event that occurred.

Each bit CLSCn, DETCn represents an individual port.

A read at each location (04h or 05h) returns the same register data with the exception that the Clear-on-Read command clears all bits of the register. These bits are cleared when port n is turned off.

If this register is causing the INT pin to be activated, this Clear-on-Read command releases the INT pin.

Any active bit will have an impact on the Interrupt Register as indicated in the Interrupt Register description.

Bit Descriptions

CLSC4-CLSC1: Indicates that at least one classification cycle occurred.

1 = At least one classification cycle occurred.

0 = No classification cycle occurred.

DETC4-DETC1: Indicates that at least one detection cycle occurred.

1 = At least one detection cycle occurred.

0 = No detection cycle occurred.