ZHCSCE7I March 2014 – July 2019 TPS23861
PRODUCTION DATA.
- 1 特性
- 2 應用范圍
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Detection Resistance Measurement
- 7.3.2 Physical Layer Classification
- 7.3.3 Class and Detect Fields
- 7.3.4 Register State Following a Fault
- 7.3.5 Disconnect
- 7.3.6 Disconnect Threshold
- 7.3.7 Fast Shutdown Mode
- 7.3.8 Legacy Device Detection
- 7.3.9 VPWR Undervoltage and UVLO Events
- 7.3.10 Timer-Deferrable Interrupt Support
- 7.3.11 A/D Converter and I2C Interface
- 7.3.12 Independent Operation when the AUTO Bit is Set
- 7.3.13 I2C Slave Address and AUTO Bit Programming
- 7.4 Device Functional Modes
- 7.5
Register Map – I2C-Addressable
- 7.5.1 Interrupt Register
- 7.5.2 Interrupt Enable Register
- 7.5.3 Power Event Register
- 7.5.4 Detection Event Register
- 7.5.5 Fault Event Register
- 7.5.6 Start/ILIM Event Register
- 7.5.7 Supply Event Register
- 7.5.8 Port n Status Register
- 7.5.9 Power Status Register
- 7.5.10 I2C Slave Address Register
- 7.5.11 Operating Mode Register
- 7.5.12 Disconnect Enable Register
- 7.5.13 Detect/Class Enable Register
- 7.5.14 Port Power Priority Register
- 7.5.15 Timing Configuration Register
- 7.5.16 General Mask 1 Register
- 7.5.17 Detect/Class Restart Register
- 7.5.18 Power Enable Register
- 7.5.19 Reset Register
- 7.5.20 Legacy Detect Mode Register
- 7.5.21 Two-Event Classification Register
- 7.5.22 Interrupt Timer Register
- 7.5.23 Disconnect Threshold Register
- 7.5.24 ICUTnm CONFIG Register
- 7.5.25 Temperature Register
- 7.5.26 Input Voltage Register
- 7.5.27 Port n Current Register
- 7.5.28 Port n Voltage Register
- 7.5.29 PoE Plus Register
- 7.5.30 Firmware Revision Register
- 7.5.31 I2C Watchdog Register
- 7.5.32 Device ID Register
- 7.5.33 Cool Down/Gate Drive Register
- 7.5.34 Port n Detect Resistance Register
- 7.5.35 Port n Detect Voltage Difference Register
- 7.5.36 Reserved Registers
-
8 Application and Implementation
- 8.1 Introduction to PoE
- 8.2 Application Information
- 8.3 Typical Application
- 8.4 System Examples
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
7.4.5 Push-Button Power On Response
The port behavior of the TPS23861 to a commanded power on from the push-button register varies depending upon both the detect and class enable registers.
Table 8. Summarized Response(1)
| OPERATING MODE | DETECT EN BIT | CLASS EN BIT | PORT BEHAVIOR |
|---|---|---|---|
| Off | x | x | Port does not power on |
| Manual | x | x | Port immediately powers on |
| Semi-Auto | 0 | 0 | Port does not power on |
| 1 | 0 | Port powers on after completion of next good detect | |
| 0 | 1 | Port does not power on | |
| 1 | 1 | Port powers on after completion of next good detect and classification | |
| Auto | x | x | Pushbutton power on ignored. Port follows Auto Mode rules |
(1) Response to a push-button power on.
Figure 45. Semi-Auto Sequenced Turn On