SNVSC50 june   2023 TPS389006

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  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 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 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 I2C
      2. 8.3.2 Auto Mask (AMSK)
      3. 8.3.3 PEC
      4. 8.3.4 VDD
      5. 8.3.5 MON
      6. 8.3.6 NIRQ
      7. 8.3.7 ADC
      8. 8.3.8 Time Stamp
    4. 8.4 Device Functional Modes
      1. 8.4.1 Built-In Self Test and Configuration Load
        1. 8.4.1.1 Notes on BIST Execution
      2. 8.4.2 TPS389006 Power ON
      3. 8.4.3 General Monitoring
        1. 8.4.3.1 IDLE Monitoring
        2. 8.4.3.2 ACTIVE Monitoring
        3. 8.4.3.3 Sequence Monitoring 1
          1. 8.4.3.3.1 ACT Transitions 0→1
          2. 8.4.3.3.2 SLEEP Transition 1→0
          3. 8.4.3.3.3 SLEEP Transition 0→1
        4. 8.4.3.4 Sequence Monitoring 2
          1. 8.4.3.4.1 ACT Transition 1→0
    5. 8.5 Register Maps
      1. 8.5.1 BANK0 Registers
      2. 8.5.2 BANK1 Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Multichannel Sequencer and Monitor
      2. 9.2.2 Design Requirements
      3. 9.2.3 Detailed Design Procedure
      4. 9.2.4 Application Curves
  11. 10Power Supply Recommendations
    1. 10.1 Power Supply Guidelines
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Device Nomenclature
    2. 12.2 Documentation Support
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.3 PEC

TPS389006 supports Packet Error Checking (PEC). It uses a CRC-8 represented by the polynomial C(x)=x^8 + x^2 + x + 1, with CRC initial value set to 0x00. The PEC calculation includes all bytes in the transmission, including address, command and data. The PEC calculation does not include ACK or NACK bits or START,STOP or REPEATED START conditions. The device which acts as a peripheral and supports PEC must be prepared to perform the transfer with or without a PEC, verify the correctness of the PEC if present and only process the message if PEC is correct.

  • If PEC is enabled by EN_PEC, and the PEC byte is present in the write transaction, the device will NACK and assert NIRQ if PEC byte is incorrect.

  • If PEC is enabled by EN_PEC, and the PEC byte is not present in the write transaction

-If REQ_PEC =0, missing PEC is treated as good PEC and register write succeeds. NIRQ is not asserted.

-If REQ_PEC =1, missing PEC is treated as incorrect PEC and register write fails. NIRQ is asserted.