ZHCSNX8B December   2020  – September 2023 TPS6593-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
    1.     5
  5. 4 Revision History
  6. 5 说明（续）
  7. 6 Pin Configuration and Functions
    1. 6.1 Digital Signal Descriptions
  8. 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  General Purpose Low Drop-Out Regulators (LDO1, LDO2, LDO3)
    6. 7.6  Low Noise Low Drop-Out Regulator (LDO4)
    7. 7.7  Internal Low Drop-Out Regulators (LDOVRTC, LDOVINT)
    8. 7.8  BUCK1, BUCK2, BUCK3, BUCK4 and BUCK5 Regulators
    9. 7.9  Reference Generator (BandGap)
    10. 7.10 Monitoring Functions
    11. 7.11 Clocks, Oscillators, and PLL
    12. 7.12 Thermal Monitoring and Shutdown
    13. 7.13 System Control Thresholds
    14. 7.14 Current Consumption
    15. 7.15 Backup Battery Charger
    16. 7.16 Digital Input Signal Parameters
    17. 7.17 Digital Output Signal Parameters
    18. 7.18 I/O Pullup and Pulldown Resistance
    19. 7.19 I2C Interface
    20. 7.20 Serial Peripheral Interface (SPI)
    21. 7.21 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  System Supply Voltage Monitor
      2. 8.3.2  Power Resources (Bucks and LDOs)
        1. 8.3.2.1 Buck Regulators
          1. 8.3.2.1.1  BUCK Regulator Overview
          2. 8.3.2.1.2  Multi-Phase Operation and Phase-Adding or Shedding
          3. 8.3.2.1.3  Transition Between PWM and PFM Modes
          4. 8.3.2.1.4  Multi-Phase BUCK Regulator Configurations
          5. 8.3.2.1.5  Spread-Spectrum Mode
          6. 8.3.2.1.6  Adaptive Voltage Scaling (AVS) and Dynamic Voltage Scaling (DVS) Support
          7. 8.3.2.1.7  BUCK Output Voltage Setting
          8. 8.3.2.1.8  BUCK Regulator Current Limit
          9. 8.3.2.1.9  SW_Bx Short-to-Ground Detection
          10. 8.3.2.1.10 Sync Clock Functionality
          11.        49
        2. 8.3.2.2 Low Dropout Regulators (LDOs)
          1. 8.3.2.2.1 LDOVINT
          2. 8.3.2.2.2 LDOVRTC
          3. 8.3.2.2.3 LDO1, LDO2, and LDO3
          4. 8.3.2.2.4 Low-Noise LDO (LDO4)
      3. 8.3.3  Output Voltage Monitor and PGOOD Generation
      4. 8.3.4  Thermal Monitoring
        1. 8.3.4.1 Thermal Warning Function
        2. 8.3.4.2 Thermal Shutdown
      5. 8.3.5  Backup Supply Power-Path
      6. 8.3.6  General-Purpose I/Os (GPIO Pins)
      7. 8.3.7  nINT, EN_DRV, and nRSTOUT Pins
      8. 8.3.8  Interrupts
      9. 8.3.9  RTC
        1. 8.3.9.1 General Description
        2. 8.3.9.2 Time Calendar Registers
          1. 8.3.9.2.1 TC Registers Read Access
          2. 8.3.9.2.2 TC Registers Write Access
        3. 8.3.9.3 RTC Alarm
        4. 8.3.9.4 RTC Interrupts
        5. 8.3.9.5 RTC 32-kHz Oscillator Drift Compensation
      10. 8.3.10 Watchdog (WDOG)
        1. 8.3.10.1 Watchdog Fail Counter and Status
        2. 8.3.10.2 Watchdog Start-Up and Configuration
        3. 8.3.10.3 MCU to Watchdog Synchronization
        4. 8.3.10.4 Watchdog Disable Function
        5. 8.3.10.5 Watchdog Sequence
        6. 8.3.10.6 Watchdog Trigger Mode
        7. 8.3.10.7 WatchDog Flow Chart and Timing Diagrams in Trigger Mode
        8.       79
        9. 8.3.10.8 Watchdog Question-Answer Mode
          1. 8.3.10.8.1 Watchdog Q&A Related Definitions
          2. 8.3.10.8.2 Question Generation
          3. 8.3.10.8.3 Answer Comparison
            1. 8.3.10.8.3.1 Sequence of the 2-bit Watchdog Answer Counter
            2. 8.3.10.8.3.2 Watchdog Sequence Events and Status Updates
            3. 8.3.10.8.3.3 Watchdog Q&A Sequence Scenarios
      11. 8.3.11 Error Signal Monitor (ESM)
        1. 8.3.11.1 ESM Error-Handling Procedure
          1. 8.3.11.1.1 Level Mode
          2.        90
          3. 8.3.11.1.2 PWM Mode
            1. 8.3.11.1.2.1 Good-Events and Bad-Events
            2. 8.3.11.1.2.2 ESM Error-Counter
            3. 8.3.11.1.2.3 ESM Start-Up in PWM Mode
            4. 8.3.11.1.2.4 ESM Flow Chart and Timing Diagrams in PWM Mode
            5.         96
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device State Machine
        1. 8.4.1.1 Fixed Device Power FSM
          1. 8.4.1.1.1 Register Resets and NVM Read at INIT State
        2. 8.4.1.2 Pre-Configurable Mission States
          1. 8.4.1.2.1 PFSM Commands
            1. 8.4.1.2.1.1  REG_WRITE_IMM Command
            2. 8.4.1.2.1.2  REG_WRITE_MASK_IMM Command
            3. 8.4.1.2.1.3  REG_WRITE_MASK_PAGE0_IMM Command
            4. 8.4.1.2.1.4  REG_WRITE_BIT_PAGE0_IMM Command
            5. 8.4.1.2.1.5  REG_WRITE_WIN_PAGE0_IMM Command
            6. 8.4.1.2.1.6  REG_WRITE_VOUT_IMM Command
            7. 8.4.1.2.1.7  REG_WRITE_VCTRL_IMM Command
            8. 8.4.1.2.1.8  REG_WRITE_MASK_SREG Command
            9. 8.4.1.2.1.9  SREG_READ_REG Command
            10. 8.4.1.2.1.10 SREG_WRITE_IMM Command
            11. 8.4.1.2.1.11 WAIT Command
            12. 8.4.1.2.1.12 DELAY_IMM Command
            13. 8.4.1.2.1.13 DELAY_SREG Command
            14. 8.4.1.2.1.14 TRIG_SET Command
            15. 8.4.1.2.1.15 TRIG_MASK Command
            16. 8.4.1.2.1.16 END Command
          2. 8.4.1.2.2 Configuration Memory Organization and Sequence Execution
          3. 8.4.1.2.3 Mission State Configuration
          4. 8.4.1.2.4 Pre-Configured Hardware Transitions
            1. 8.4.1.2.4.1 ON Requests
            2. 8.4.1.2.4.2 OFF Requests
            3. 8.4.1.2.4.3 NSLEEP1 and NSLEEP2 Functions
            4. 8.4.1.2.4.4 WKUP1 and WKUP2 Functions
            5. 8.4.1.2.4.5 LP_WKUP Pins for Waking Up from LP STANDBY
        3. 8.4.1.3 Error Handling Operations
          1. 8.4.1.3.1 Power Rail Output Error
          2. 8.4.1.3.2 Catastrophic Error
          3. 8.4.1.3.3 Watchdog (WDOG) Error
          4. 8.4.1.3.4 Warnings
        4. 8.4.1.4 Device Start-up Timing
        5. 8.4.1.5 Power Sequences
        6. 8.4.1.6 First Supply Detection
        7. 8.4.1.7 Register Power Domains and Reset Levels
      2. 8.4.2 Multi-PMIC Synchronization
        1. 8.4.2.1 SPMI Interface System Setup
        2. 8.4.2.2 Transmission Protocol and CRC
          1. 8.4.2.2.1 Operation with Transmission Errors
          2. 8.4.2.2.2 Transmitted Information
        3. 8.4.2.3 SPMI Target Device Communication to SPMI Controller Device
          1. 8.4.2.3.1 Incomplete Communication from SPMI Target Device to SPMI Controller Device
        4. 8.4.2.4 SPMI-BIST Overview
          1. 8.4.2.4.1 SPMI Bus during Boot BIST and RUNTIME BIST
          2. 8.4.2.4.2 Periodic Checking of the SPMI
          3. 8.4.2.4.3 SPMI Message Priorities
    5. 8.5 Control Interfaces
      1. 8.5.1 CRC Calculation for I2C and SPI Interface Protocols
      2. 8.5.2 I2C-Compatible Interface
        1. 8.5.2.1 数据有效性
        2. 8.5.2.2 启动和停止条件
        3. 8.5.2.3 Transferring Data
        4. 8.5.2.4 Auto-Increment Feature
      3. 8.5.3 Serial Peripheral Interface (SPI)
    6. 8.6 Configurable Registers
      1. 8.6.1 Register Page Partitioning
      2. 8.6.2 CRC Protection for Configuration, Control, and Test Registers
      3. 8.6.3 CRC Protection for User Registers
      4. 8.6.4 Register Write Protection
        1. 8.6.4.1 Watchdog and ESM Configuration Registers
        2. 8.6.4.2 User Registers
    7. 8.7 Register Maps
      1. 8.7.1 TPS6593-Q1 Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Powering a Processor
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 VCCA
          2. 9.2.1.2.2 Internal LDOs
          3. 9.2.1.2.3 Crystal Oscillator
          4. 9.2.1.2.4 Buck Input Capacitors
          5. 9.2.1.2.5 Buck Output Capacitors
          6. 9.2.1.2.6 Buck Inductors
          7. 9.2.1.2.7 LDO Input Capacitors
          8. 9.2.1.2.8 LDO Output Capacitors
          9. 9.2.1.2.9 Digital Signal Connections
      2. 9.2.2 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 第三方产品免责声明
    2. 10.2 Device Nomenclature
    3. 10.3 Documentation Support
    4. 10.4 Receiving Notification of Documentation Updates
    5. 10.5 支持资源
    6. 10.6 Trademarks
    7. 10.7 静电放电警告
    8. 10.8 术语表
  12. 11Mechanical, Packaging, and Orderable Information

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8.3.10.8.1 Watchdog Q&A Related Definitions

A question and answer are defined as follows:

    QuestionA question is a 4-bit word (see Section 8.3.10.8.2).

    The watchdog provides the question to the MCU when the MCU reads the WD_QUESTION[3:0] bits.

    The MCU can request each new question at the start of the watchdog sequence, but this is not required to calculate the answer. The MCU can also have a software implementation that generates the question according the circuit shown in Figure 8-23. Nevertheless, the answer and therefore the answer-bytes are always based on the question generated inside the watchdog of the device. So, if the MCU generates an incorrect question and gives answer-bytes calculated from this incorrect question, the watchdog detects a bad event

    AnswerAn answer is a 32-bit word that is split into four answer bytes: Answer-3, Answer-2, Answer-1, and Answer-0.

    The watchdog receives an answer-byte when the MCU writes to the WD_ANSWER[7:0] bits. For each question, the watchdog requires four correct answer-bytes from the MCU in the correct timing and order (Answer-3, Answer-2, and Answer-1 in Window 1 in the correct sequence, and Answer-0 in Window 2) to detect a good event.

The watchdog sequence in Q&A mode ends after the MCU writes the fourth answer byte (Answer-0), or after a time-out event when the Window-2 time-interval elapses.

GUID-25A1988D-5835-4399-84F9-142592BA7DF1-low.gif

The register WD_QUESTION_ANSW_CNT has following bits:

  • Bit 6: Reserved
  • Bit 5-4: WD_ANSW_CNT. These bits give the number for the next expected answer-byte
  • Bit 3-0: WD_QUESTION. These bits give the value of the current generated question

(1) For the question generation, the MCU is not required to read the question. The MCU can give correct answer-bytes Answer-3, Answer-2, Answer-1 as soon as Window-1 starts. The next watchdog sequence always starts in 1 system clock cycle after the watchdog receives the final Answer-0.
(2) The MCU can put other I2C or SPI commands in-between the write-commands to WD_ANSWER[7:0] (even re-requesting the question). The insertion of other commands in-between the write-commands to WD_ANSWER[7:0] has no influence on the detection of a good event, as long as the three correct answer-bytes in Window-1 are in the correct sequence, and the fourth correct answer-byte is provided before the configured Window-2 time-interval elapses.
Figure 8-21 Watchdog Sequence in Q&A Mode