SLVUCI5 april   2023 AM6526 , AM6528 , AM6548 , TPS6594-Q1

 

  1.   PDN-0C User's Guide for Powering AM65x with the TPS6594-Q1 PMIC
  2.   Trademarks
  3. 1Introduction
  4. 2Device Versions
  5. 3Processor Connections
    1. 3.1 Power Mapping
    2. 3.2 Control Mapping
  6. 4Supporting Functional Safety Systems
  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 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 and TO_SAFE
      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 ONLY, 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 Runtime Customization
  10. 8References

6.3.8 TO_ACTIVE

When a trigger causes the TO_ACTIVE sequence to execute, all rails power up in the recommended power up sequence as shown in Figure 6-11.

At the beginning of the TO_ACTIVE sequence the PMIC clears SPMI_LP_EN and LPM_EN and set AMUXOUT_EN and CLKMON_EN.

GUID-20220701-SS0I-8FNK-7L3Q-KF026T6F7RTH-low.svg Figure 6-11 TO_ACTIVE Sequence

At the end of the TO_ACTIVE sequence the 'FORCE_EN_DRV_LOW' bit is cleared. Additionally, the nRSTOUT and nRSTOUT_SOC signals are delayed by the value found in PFSM_DELAY_REG_1.

Note: After the TO_ACTIVE sequence the MCU is responsible for managing the EN_DRV.