SLVAE86B september   2019  – august 2023 BQ75614-Q1 , BQ79612-Q1 , BQ79614-Q1 , BQ79616 , BQ79616-Q1 , BQ79631-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Command Frames
    1. 1.1 Structure
      1. 1.1.1 Initialization Byte
      2. 1.1.2 Device ID Address
      3. 1.1.3 Register Address
      4. 1.1.4 Data
      5. 1.1.5 CRC
    2. 1.2 Command Frame Template Tables
    3. 1.3 ReadReg and WriteReg Functions
      1. 1.3.1 ReadReg
      2. 1.3.2 WriteReg
      3. 1.3.3 Packet Types Available in Sample Code
  5. 2 Quick Start Guide
  6. 3 Wake Sequence
  7. 4 Auto-Addressing
    1. 4.1 Steps
    2. 4.2 Example Commands for ThreeDevices
  8. 5 Read Cell Voltages
    1. 5.1 Steps
    2. 5.2 Example Commands for ThreeDevices
    3. 5.3 Convert to Voltages
  9. 6 Cell Balancing
    1. 6.1 Steps
    2. 6.2 Example Commands
  10. 7 OVUV
    1. 7.1 Steps
  11. 8 OTUT
    1. 8.1 Steps
  12. 9 Reverse Addressing
    1. 9.1 Steps
    2. 9.2 Example Commands for ThreeDevices
  13. 10Revision History

9.1 Steps

  1. For a single device, write CONTROL1 = 0x80 to set DIR_SEL=1 for the base device.
  2. Send broadcast write reverse direction CONTROL1 = 0x80 to change direction for the rest of the devices. This command type should only ever be used for this one scenario, where the user is changing the direction of the daisy chain communications. Do not use this for other commands.
  3. Now that the direction has been changed on all devices, do the standard auto-addressing sequence above, but with DIR1_ADDR instead of DIR0_ADDR, and with CONTROL1=0x81 instead of 0x01 (to keep the reverse direction enabled). Make sure to also update the COMM_CTRL register for top of stack.