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

5.5 VCCA Settings

These settings detail the default monitoring enabled on VCCA. All these settings can be changed though I2C after startup.

Table 5-6 VCCA NVM Settings
Register Name Field Name TPS6594141B-Q1 LP876441B1-Q1
Value Description Value Description
VCCA_VMON_CTRL VMON_DEGLITCH_SEL 0x1 20 us 0x1 VCCA 20us, VMON/BUCK 20us
VMON2_RV_SEL 0x0 Disabled
VMON2_EN 0x0 Disabled; OV and UV comparators.
VMON1_RV_SEL 0x0 Disabled
VMON1_EN 0x0 Disabled; OV and UV comparators.
VCCA_VMON_EN 0x1 Enabled; OV and UV comparators. 0x1 Enabled; OV and UV comparators.
VCCA_PG_WINDOW VCCA_OV_THR 0x7 +10% 0x7 +10%
VCCA_UV_THR 0x7 -10% 0x7 -10%
VCCA_PG_SET 0x0 3.3 V 0x0 3.3 V
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