SLVUBY7A October   2020  – October 2022 DRA821U , DRA821U-Q1 , LP8764-Q1 , TPS6594-Q1

 

  1.   User's Guide for Powering DRA821 with TPS6594-Q1 and LP8764-Q1
  2.   Trademarks
  3. 1Introduction
  4. 2Device Versions
  5. 3Processor Connections
  6. 4Supporting Functional Safety Systems
    1. 4.1 Achieving ASIL-B System Requirements
    2. 4.2 Achieving up to ASIL-D System Requirements
  7. 5Static NVM Settings
    1. 5.1  Application-Based Configuration Settings
    2. 5.2  Device Identification Settings
    3. 5.3  BUCK Settings
    4. 5.4  LDO Settings
    5. 5.5  VCCA Settings
    6. 5.6  GPIO Settings
    7. 5.7  Finite State Machine (FSM) Settings
    8. 5.8  Interrupt Settings
    9. 5.9  POWERGOOD Settings
    10. 5.10 Miscellaneous Settings
    11. 5.11 Interface Settings
    12. 5.12 Multi-Device Settings
    13. 5.13 Watchdog Settings
  8. 6Pre-Configurable Finite State Machine (PFSM) Settings
    1. 6.1 Configured States
    2. 6.2 PFSM Triggers
    3. 6.3 Power Sequences
      1. 6.3.1 TO_SAFE_SEVERE
      2. 6.3.2 TO_SAFE_ORDERLY and TO_STANDBY
      3. 6.3.3 ACTIVE_TO_WARM
      4. 6.3.4 ESM_SOC_ERROR
      5. 6.3.5 PWR_SOC_ERROR
      6. 6.3.6 MCU_TO_WARM
      7. 6.3.7 TO_MCU
      8. 6.3.8 TO_ACTIVE
      9. 6.3.9 TO_RETENTION
  9. 7Application Examples
    1. 7.1 Moving Between States: ACTIVE, MCU, and RETENTION
      1. 7.1.1 ACTIVE
      2. 7.1.2 MCU ONLY
      3. 7.1.3 RETENTION
    2. 7.2 Entering and Exiting Standby
    3. 7.3 Entering and Existing LP_STANDBY
    4. 7.4 GPIO8 and Watchdog
  10. 8Additional Resources
  11. 9Revision History

5.9 POWERGOOD Settings

These settings detail the default configurations for what is monitored by PGOOD pin. All these settings can be changed though I2C after startup.

Table 5-10 POWERGOOD NVM Settings
Register Name Field Name TPS6594141B-Q1 LP876441B1-Q1
Value Description Value Description
PGOOD_SEL_1 PGOOD_SEL_BUCK1 0x0 Masked 0x0 Masked
PGOOD_SEL_BUCK2 0x0 Masked 0x0 Masked
PGOOD_SEL_BUCK3 0x0 Masked 0x0 Masked
PGOOD_SEL_BUCK4 0x0 Masked 0x0 Masked
PGOOD_SEL_2 PGOOD_SEL_BUCK5 0x0 Masked
PGOOD_SEL_3 PGOOD_SEL_LDO1 0x0 Masked
PGOOD_SEL_LDO2 0x0 Masked
PGOOD_SEL_LDO3 0x0 Masked
PGOOD_SEL_LDO4 0x0 Masked
PGOOD_SEL_4 PGOOD_SEL_VCCA 0x0 Masked 0x0 Masked
PGOOD_SEL_VMON1 0x0 Masked
PGOOD_SEL_VMON2 0x0 Masked
PGOOD_SEL_TDIE_WARN 0x0 Masked 0x0 Masked
PGOOD_SEL_NRSTOUT 0x0 Masked 0x0 Masked
PGOOD_SEL_NRSTOUT_ SOC 0x0 Masked 0x0 Masked
PGOOD_POL 0x0 PGOOD signal is high when monitored inputs are valid 0x0 PGOOD signal is high when monitored inputs are valid
PGOOD_WINDOW 0x1 Both undervoltage and overvoltage are monitored 0x0 Only undervoltage is monitored