SLLSF80B October   2019  – March 2022 TCAN1144-Q1 , TCAN1145-Q1 , TCAN1146-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description continued
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  ESD Ratings
    4. 8.4  Recommended Operating Conditions
    5. 8.5  Thermal Information
    6. 8.6  Supply Characteristics
    7. 8.7  Electrical Characteristics
    8. 8.8  Timing Requirements
    9. 8.9  Switching Characteristics
    10. 8.10 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1  VSUP Pin
      2. 10.3.2  VIO Pin
      3. 10.3.3  VCC Pin
      4. 10.3.4  GND
      5. 10.3.5  INH/LIMP Pin
      6. 10.3.6  WAKE Pin
      7. 10.3.7  TXD Pin
      8. 10.3.8  RXD Pin
      9. 10.3.9  SDO/nINT Interrupt Pin
      10. 10.3.10 nCS Pin
      11. 10.3.11 SCLK
      12. 10.3.12 SDI
      13. 10.3.13 CANH and CANL Bus Pins
    4. 10.4 Device Functional Modes
      1. 10.4.1 Normal Mode
      2. 10.4.2 Standby Mode
      3. 10.4.3 Listen Only Mode
      4. 10.4.4 Sleep Mode
        1. 10.4.4.1 Bus Wake via RXD Request (BWRR) in Sleep Mode
        2. 10.4.4.2 Local Wake Up (LWU) via WAKE Input Terminal
      5. 10.4.5 Selective Wake-up
        1. 10.4.5.1 Selective Wake Mode (TCAN1145-Q1 and TCAN1146-Q1)
        2. 10.4.5.2 Frame Detection (TCAN1145-Q1 and TCAN1146-Q1)
        3. 10.4.5.3 Wake-Up Frame (WUF) Validation (TCAN1145-Q1 and TCAN1146-Q1)
        4. 10.4.5.4 WUF ID Validation (TCAN1145-Q1 and TCAN1146-Q1)
        5. 10.4.5.5 WUF DLC Validation (TCAN1145-Q1 and TCAN1146-Q1)
        6. 10.4.5.6 WUF Data Validation (TCAN1145-Q1 and TCAN1146-Q1)
        7. 10.4.5.7 Frame error counter (TCAN1145-Q1 and TCAN1146-Q1)
        8. 10.4.5.8 CAN FD Frame Tolerance (TCAN1145-Q1 and TCAN1146-Q1)
      6. 10.4.6 Fail-safe Features
        1. 10.4.6.1 Sleep Mode via Sleep Wake Error
        2. 10.4.6.2 Fail-safe Mode
      7. 10.4.7 Protection Features
        1. 10.4.7.1 Driver and Receiver Function
        2. 10.4.7.2 Floating Terminals
        3. 10.4.7.3 TXD Dominant Time Out (DTO)
        4. 10.4.7.4 CAN Bus Short Circuit Current Limiting
        5. 10.4.7.5 Thermal Shutdown
        6. 10.4.7.6 Under-Voltage Lockout (UVLO) and Unpowered Device
          1. 10.4.7.6.1 UVSUP, UVCC
          2. 10.4.7.6.2 UVIO
            1. 10.4.7.6.2.1 Fault Behavior
        7. 10.4.7.7 Watchdog (TCAN1144-Q1 and TCAN1146-Q1)
          1. 10.4.7.7.1 Watchdog Error Counter
          2. 10.4.7.7.2 Watchdog SPI Control Programming
          3. 10.4.7.7.3 Watchdog Timing
          4. 10.4.7.7.4 Question and Answer Watchdog
            1. 10.4.7.7.4.1 WD Question and Answer Basic information
            2. 10.4.7.7.4.2 Question and Answer Register and Settings
            3. 10.4.7.7.4.3 WD Question and Answer Value Generation
          5. 10.4.7.7.5 Question and Answer WD Example
            1. 10.4.7.7.5.1 Example configuration for desired behavior
            2. 10.4.7.7.5.2 Example of performing a question and answer sequence
      8. 10.4.8 Bus Fault Detection and Communication (TCAN1144-Q1 and TCAN1146-Q1)
      9. 10.4.9 SPI Communication
        1. 10.4.9.1 Chip Select Not (nCS):
        2. 10.4.9.2 SPI Clock Input (SCLK):
        3. 10.4.9.3 SPI Serial Data Input (SDI):
        4. 10.4.9.4 SPI Serial Data Output (SDO):
    5. 10.5 Programming
    6. 10.6 Register Maps
      1. 10.6.1  DEVICE_ID_y Register (Address = 0h + formula) [reset = value]
      2. 10.6.2  REV_ID_MAJOR Register (Address = 8h) [reset = 01h]
      3. 10.6.3  REV_ID_MINOR Register (Address = 9h) [reset = 00h]
      4. 10.6.4  SPI_RSVD_x Register (Address = Ah + formula) [reset = 00h]
      5. 10.6.5  Scratch_Pad_SPI Register (Address = Fh) [reset = 00h]
      6. 10.6.6  MODE_CNTRL Register (Address = 10h) [reset = 04h]
      7. 10.6.7  WAKE_PIN_CONFIG Register (Address = 11h) [reset = 4h]
      8. 10.6.8  PIN_CONFIG Register (Address = 12h) [reset = 00h]
      9. 10.6.9  WD_CONFIG_1 Register (Address = 13h) [reset = 15h]
      10. 10.6.10 WD_CONFIG_2 Register (Address = 14h) [reset = 02h]
      11. 10.6.11 WD_INPUT_TRIG Register (Address = 15h) [reset = 00h]
      12. 10.6.12 WD_RST_PULSE Register (Address = 16h) [reset = 07h]
      13. 10.6.13 FSM_CONFIG Register (Address = 17h) [reset = 00h]
      14. 10.6.14 FSM_CNTR Register (Address = 18h) [reset = 00h]
      15. 10.6.15 DEVICE_RST Register (Address = 19h) [reset = 00h]
      16. 10.6.16 DEVICE_CONFIG1 Register (Address = 1Ah) [reset = 00h]
      17. 10.6.17 DEVICE_CONFIG2 Register (Address = 1Bh) [reset = 0h]
      18. 10.6.18 SWE_DIS Register (Address 1Ch) [reset = 04h]
      19. 10.6.19 SDO_CONFIG Register (Address = 29h) [reset = 00h]
      20. 10.6.20 WD_QA_CONFIG Register (Address = 2Dh) [reset = 00h]
      21. 10.6.21 WD_QA_ANSWER Register (Address = 2Eh) [reset = 00h]
      22. 10.6.22 WD_QA_QUESTION Register (Address = 2Fh) [reset = 00h]
      23. 10.6.23 SW_ID1 Register (Address = 30h) [reset = 00h]
      24. 10.6.24 SW_ID2 Register (Address = 31h) [reset = 00h]
      25. 10.6.25 SW_ID3 Register (Address = 32h) [reset = 00h]
      26. 10.6.26 SW_ID4 Register (Address = 33h) [reset = 00h]
      27. 10.6.27 SW_ID_MASK1 Register (Address = 34h) [reset = 00h]
      28. 10.6.28 SW_ID_MASK2 Register (Address = 35h) [reset = 00h]
      29. 10.6.29 SW_ID_MASK3 Register (Address = 36h) [reset = 00h]
      30. 10.6.30 SW_ID_MASK4 Register (Address = 37h) [reset = 00h]
      31. 10.6.31 SW_ID_MASK_DLC Register (Address = 38h) [reset = 00h]
      32. 10.6.32 DATA_y Register (Address = 39h + formula) [reset = 00h]
      33. 10.6.33 SW_RSVD_y Register (Address = 41h + formula) [reset = 00h]
      34. 10.6.34 SW_CONFIG_1 Register (Address = 44h) [reset = 50h]
      35. 10.6.35 SW_CONFIG_2 Register (Address = 45h) [reset = 00h]
      36. 10.6.36 SW_CONFIG_3 Register (Address = 46h) [reset = 1Fh]
      37. 10.6.37 SW_CONFIG_4 Register (Address = 47h) [reset = 00h]
      38. 10.6.38 SW_CONFIG_RSVD_y Register (Address = 48h + formula) [reset = 00h]
      39. 10.6.39 INT_GLOBAL Register (Address = 50h) [reset = 00h]
      40. 10.6.40 INT_1 Register (Address = 51h) [reset = 00h]
      41. 10.6.41 INT_2 Register (Address = 52h) [reset = 40h]
      42. 10.6.42 INT_3 Register (Address 53h) [reset = 00h]
      43. 10.6.43 INT_CANBUS Register (Address = 54h) [reset = 00h]
      44. 10.6.44 INT_GLOBAL_ENABLE (Address = 55h) [reset = 00h]
      45. 10.6.45 INT_ENABLE_1 Register (Address = 56h) [reset = FFh]
      46. 10.6.46 INT_ENABLE_2 Register (Address = 57h) [reset = 1Fh]
      47. 10.6.47 INT_ENABLE_3 Register (Address = 58h) [reset = 0h]
      48. 10.6.48 INT_ENABLE_CANBUS Register (Address = 59h) [reset = 7Fh]
      49. 10.6.49 INT_RSVD_y Register (Address = 5Ah + formula) [reset = 00h]
  11. 11Application Information Disclaimer
    1. 11.1 Application Information
      1. 11.1.1 BUS Loading, Length and Number of Nodes
      2. 11.1.2 CAN Termination
        1. 11.1.2.1 Termination
        2. 11.1.2.2 CAN Bus Biasing
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Brownout
      3. 11.2.3 Application Curves
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Documentation Support
      1. 14.1.1 CAN Transceiver Physical Layer Standards:
      2. 14.1.2 EMC Requirements:
      3. 14.1.3 Conformance Test Requirements:
      4. 14.1.4 Related Documentation
    2. 14.2 Receiving Notification of Documentation Updates
    3. 14.3 Support Resources
    4. 14.4 Trademarks
    5. 14.5 Electrostatic Discharge Caution
    6. 14.6 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

10.6.42 INT_3 Register (Address 53h) [reset = 00h]

INT_3 is shown in Figure 10-81 and described in Table 10-62.

Return to Summary Table.

All interrupts are for TCAN1146-Q1. Watchdog and CAN bus interrupts are for TCAN1144-Q1. Selective wake interrupts are for TCAN1145-Q1

The CRC_EEPROM interrupt is set when the internal EEPROM used for trimming has a CRC error. Upon power-up, the device loads an internal register from the EEPROM and performs a CRC check. If an error is present after eight attempts of loading valid data the CRC_EEPROM interrupt will be set. This will indicate an error that may impact device performance. This is repeated when the device leaves sleep mode or fail-safe mode due to a wake event. The device will perform a CRC check on the internal registers loaded from the EEPROM. If there is an error the device will reload the registers from the EEPROM. If there is a CRC error the device will attempt to load the internal registers up to eight times. After the eighth attempt the CRC_EEPROM interrupt flag will be set. This will indicate an error that may impact the device performance.

Figure 10-81 INT_3 Register
76543210
SPIERRSWERRFSMRSVDCRC_EEPROM
R/W1C-0bRH-0bR/W1C-0bR-0000bR/W1C-0b
Table 10-62 INT_3 Register Field Descriptions
BitFieldTypeResetDescription
7SPIERRR/W1C0bSets when SPI status bit sets
6SWERRRH0bLogical OR of (SW_EN=1 and NOT(SWCFG)) and FRAME_OVF. Selective Wake may not be enabled while SWERR is set
5FSMR/W1C0bEntered fail-safe mode. Can be cleared while in fail-safe mode.
4-1RSVDR0000bReserved
0CRC_EEPROMR/W1C0bEEPROM CRC error