DLPU048E August   2016  – July 2024

 

  1.   1
  2.   Trademarks
  3. 1 Introduction
    1. 1.1 Document Overview
    2. 1.2 Software Overview
    3. 1.3 Headlight Overview
  4. 2 Electrical Interface
    1. 2.1 Power-Up Signals
      1. 2.1.1 STAY-IN-BOOT (TSTPT_0)
      2. 2.1.2 HOST_IF_SEL
      3. 2.1.3 CRCZ_CHKSUM_SEL
      4. 2.1.4 HOST_SPI_MODE
        1. 2.1.4.1 Boot Flow Debug
      5. 2.1.5 SPREAD-SPECTRUM-DISABLE (TSTPT_5)
    2. 2.2 System Signals
      1. 2.2.1 HOST_IRQ
      2. 2.2.2 GPIO
      3. 2.2.3 PWM Control
  5. 3 Communication Protocol
    1. 3.1 Command Protocol
    2. 3.2 SPI Specifications
    3. 3.3 I2C Specifications
    4. 3.4 Write
      1. 3.4.1 Short Write
        1. 3.4.1.1 SPI Short Write
        2. 3.4.1.2 I2C Short Write
      2. 3.4.2 Bulk Write
        1. 3.4.2.1 SPI Bulk Write
        2. 3.4.2.2 I2C Bulk Write
      3. 3.4.3 Write Command Handling
    5. 3.5 Read
      1. 3.5.1 Read Pre-Fetch
        1. 3.5.1.1 SPI Read Pre-Fetch
        2. 3.5.1.2 I2C Read Pre-Fetch
      2. 3.5.2 Read Activate
        1. 3.5.2.1 SPI Read Activate
        2. 3.5.2.2 I2C Read Activate
      3. 3.5.3 Short Status Read
        1. 3.5.3.1 SPI Short Status Read
        2. 3.5.3.2 I2C Short Status Read
      4. 3.5.4 Read Command Handling
    6. 3.6 CRC and Checksum
      1. 3.6.1 CRC Calculation
        1. 3.6.1.1 CRC Example Implementation
        2. 3.6.1.2 CRC Example
      2. 3.6.2 Checksum Calculation
    7. 3.7 Command Tags
  6. 4 System Operation
    1. 4.1 Operating Modes
      1. 4.1.1 Standby
      2. 4.1.2 Display
    2. 4.2 Software Startup Procedure
  7. 5 Application and Use-Cases
    1. 5.1 Display and Source
      1. 5.1.1 Displaying an Image
      2. 5.1.2 Supported Image Processing
      3. 5.1.3 External Video
      4. 5.1.4 Test Pattern
      5. 5.1.5 Splash Image
      6. 5.1.6 Image Flip
    2. 5.2 Batch Command Sets
    3. 5.3 Flash Programming
      1. 5.3.1 Flash Program - Main Application
      2. 5.3.2 Flash Read - Main Application
      3. 5.3.3 Flash Program - Boot Application
    4. 5.4 Video Frame and Illumination Bin Delay
    5. 5.5 Smooth Illumination Transition
    6. 5.6 Temperature Management
      1. 5.6.1 Temperature Management for DMD Park/Unpark
      2. 5.6.2 PWM Temperature Management Function
    7. 5.7 ADC Measurements
      1. 5.7.1 Sequence-Aligned ADC Measurements
      2. 5.7.2 Single ADC Measurements
  8. 6 Tests and Diagnostics
    1. 6.1 Overview
    2. 6.2 Emergency Shutdown
      1. 6.2.1 Emergency Shutdown Causes
    3. 6.3 Diagnostic Memory Interface
    4. 6.4 Test Descriptions
      1. 6.4.1 Periodic Tests
        1. 6.4.1.1  Video Source Loss Detection
          1. 6.4.1.1.1 Configuration
          2. 6.4.1.1.2 Execution
          3. 6.4.1.1.3 Failure Actions
          4. 6.4.1.1.4 Error Codes
        2. 6.4.1.2  Video Tell-Tale Checksum
          1. 6.4.1.2.1 Configuration
          2. 6.4.1.2.2 Execution
          3. 6.4.1.2.3 Failure Actions
          4. 6.4.1.2.4 Error Codes
        3. 6.4.1.3  Video Frame Counter Checksum
          1. 6.4.1.3.1 One-Pixel Frame Counter
          2. 6.4.1.3.2 Seven-Pixel Frame Counter
          3. 6.4.1.3.3 Configuration
          4. 6.4.1.3.4 Execution
          5. 6.4.1.3.5 Failure Actions
          6. 6.4.1.3.6 Error Codes
        4. 6.4.1.4  Average Picture Level
          1. 6.4.1.4.1 Configuration
          2. 6.4.1.4.2 Execution
          3. 6.4.1.4.3 Failure Actions
          4. 6.4.1.4.4 Error Codes
        5. 6.4.1.5  Loss of Ping Command
          1. 6.4.1.5.1 Configuration
          2. 6.4.1.5.2 Execution
          3. 6.4.1.5.3 Failure Actions
          4. 6.4.1.5.4 Error Codes
        6. 6.4.1.6  DLPC230-Q1 Processor Memory ECC
          1. 6.4.1.6.1 Configuration
          2. 6.4.1.6.2 Execution
          3. 6.4.1.6.3 Failure Actions
          4. 6.4.1.6.4 Error Codes
        7. 6.4.1.7  Flash Table Transport CRC
          1. 6.4.1.7.1 Configuration
          2. 6.4.1.7.2 Execution
          3. 6.4.1.7.3 Failure Actions
          4. 6.4.1.7.4 Error Codes
        8. 6.4.1.8  Frame Buffer Swap Watchdog
          1. 6.4.1.8.1 Configuration
          2. 6.4.1.8.2 Execution
          3. 6.4.1.8.3 Failure Actions
          4. 6.4.1.8.4 Error Codes
        9. 6.4.1.9  Sequencer Instruction Read Watchdog
          1. 6.4.1.9.1 Configuration
          2. 6.4.1.9.2 Execution
          3. 6.4.1.9.3 Failure Actions
          4. 6.4.1.9.4 Error Codes
        10. 6.4.1.10 DMD Reset Instruction Watchdog
          1. 6.4.1.10.1 Configuration
          2. 6.4.1.10.2 Execution
          3. 6.4.1.10.3 Failure Actions
          4. 6.4.1.10.4 Error Codes
        11. 6.4.1.11 DLPC230-Q1 System Voltage Monitor
          1. 6.4.1.11.1 Configuration
          2. 6.4.1.11.2 Execution
          3. 6.4.1.11.3 Failure Actions
          4. 6.4.1.11.4 Error Codes
        12. 6.4.1.12 DLPC230-Q1 DMD Voltage Monitor
          1. 6.4.1.12.1 Configuration
          2. 6.4.1.12.2 Execution
          3. 6.4.1.12.3 Failure Actions
          4. 6.4.1.12.4 Error Codes
        13. 6.4.1.13 DLPC230-Q1 TPS99000-Q1 Bandgap Monitor
          1. 6.4.1.13.1 Configuration
          2. 6.4.1.13.2 Execution
          3. 6.4.1.13.3 Failure Actions
          4. 6.4.1.13.4 Error Codes
        14. 6.4.1.14 DMD Temperature Monitor
          1. 6.4.1.14.1 Configuration
          2. 6.4.1.14.2 Execution
          3. 6.4.1.14.3 Failure Actions
          4. 6.4.1.14.4 Error Codes
        15. 6.4.1.15 DMD Clock Monitor
          1. 6.4.1.15.1 Configuration
          2. 6.4.1.15.2 Execution
          3. 6.4.1.15.3 Failure Actions
          4. 6.4.1.15.4 Error Codes
        16. 6.4.1.16 DMD High Speed Interface Training
          1. 6.4.1.16.1 Configuration
          2. 6.4.1.16.2 Execution
          3. 6.4.1.16.3 Failure Actions
          4. 6.4.1.16.4 Error Codes
        17. 6.4.1.17 DMD Low Speed Interface Test
          1. 6.4.1.17.1 Configuration
          2. 6.4.1.17.2 Execution
          3. 6.4.1.17.3 Failure Actions
          4. 6.4.1.17.4 Error Codes
        18. 6.4.1.18 TPS99000-Q1 DLPC230-Q1 Processor Watchdog (WD1)
          1. 6.4.1.18.1 Configuration
          2. 6.4.1.18.2 Execution
          3. 6.4.1.18.3 Failure Actions
          4. 6.4.1.18.4 Error Codes
        19. 6.4.1.19 TPS99000-Q1 DLPC230-Q1 Sequencer Watchdog (WD2)
          1. 6.4.1.19.1 Configuration
          2. 6.4.1.19.2 Execution
          3. 6.4.1.19.3 Failure Actions
          4. 6.4.1.19.4 Error Codes
        20. 6.4.1.20 TPS99000-Q1 Temperature Warning / Error
          1. 6.4.1.20.1 Configuration
          2. 6.4.1.20.2 Execution
          3. 6.4.1.20.3 Failure Actions
          4. 6.4.1.20.4 Error Codes
        21. 6.4.1.21 TPS99000-Q1 Clock Ratio Monitor
          1. 6.4.1.21.1 Configuration
          2. 6.4.1.21.2 Execution
          3. 6.4.1.21.3 Failure Actions
          4. 6.4.1.21.4 Error Codes
        22. 6.4.1.22 TPS99000-Q1 Register Password Lock
          1. 6.4.1.22.1 Configuration
          2. 6.4.1.22.2 Execution
          3. 6.4.1.22.3 Failure Actions
          4. 6.4.1.22.4 Error Codes
        23. 6.4.1.23 TPS99000-Q1 Register Checksum
          1. 6.4.1.23.1 Configuration
          2. 6.4.1.23.2 Execution
          3. 6.4.1.23.3 Failure Actions
          4. 6.4.1.23.4 Error Codes
        24. 6.4.1.24 Software Monitor Thread
          1. 6.4.1.24.1 Configuration
          2. 6.4.1.24.2 Execution
          3. 6.4.1.24.3 Failure Actions
          4. 6.4.1.24.4 Error Codes
      2. 6.4.2 Non-Periodic Tests
        1. 6.4.2.1  Execution Time
        2. 6.4.2.2  DLPC230-Q1 Front End Functional BIST (Main)
          1. 6.4.2.2.1 Configuration
          2. 6.4.2.2.2 Execution
          3. 6.4.2.2.3 Failure Actions
          4. 6.4.2.2.4 Error Codes
        3. 6.4.2.3  DLPC230-Q1 Back End Functional BIST (Main)
          1. 6.4.2.3.1 Configuration
          2. 6.4.2.3.2 Execution
          3. 6.4.2.3.3 Failure Actions
          4. 6.4.2.3.4 Error Codes
        4. 6.4.2.4  DLPC230-Q1 Memory BISTs (Main)
          1. 6.4.2.4.1 Configuration
          2. 6.4.2.4.2 Execution
          3. 6.4.2.4.3 Failure Actions
          4. 6.4.2.4.4 Error Codes
        5. 6.4.2.5  TPS99000-Q1 Interface Signal Connection Test (Main)
          1. 6.4.2.5.1 Configuration
          2. 6.4.2.5.2 Execution
          3. 6.4.2.5.3 Failure Actions
          4. 6.4.2.5.4 Error Codes
        6. 6.4.2.6  DMD Memory Test (Main)
          1. 6.4.2.6.1 Configuration
          2. 6.4.2.6.2 Execution
          3. 6.4.2.6.3 Failure Actions
          4. 6.4.2.6.4 Error Codes
        7. 6.4.2.7  Flash Data Verification (Boot/Main)
          1. 6.4.2.7.1 Configuration
          2. 6.4.2.7.2 Execution
          3. 6.4.2.7.3 Failure Actions
          4. 6.4.2.7.4 Error Codes
        8. 6.4.2.8  DLPC230-Q1 Boot ROM CRC (Boot)
          1. 6.4.2.8.1 Configuration
          2. 6.4.2.8.2 Execution
          3. 6.4.2.8.3 Failure Actions
          4. 6.4.2.8.4 Error Codes
        9. 6.4.2.9  DLPC230-Q1 Flash Table CRC (Boot)
          1. 6.4.2.9.1 Configuration
          2. 6.4.2.9.2 Execution
          3. 6.4.2.9.3 Failure Actions
          4. 6.4.2.9.4 Error Codes
        10. 6.4.2.10 DLPC230-Q1 Main Application CRC (Boot)
          1. 6.4.2.10.1 Configuration
          2. 6.4.2.10.2 Execution
          3. 6.4.2.10.3 Failure Actions
          4. 6.4.2.10.4 Error Codes
        11. 6.4.2.11 DLPC230-Q1 Command and Flash Interface Memory Test (Boot)
          1. 6.4.2.11.1 Configuration
          2. 6.4.2.11.2 Execution
          3. 6.4.2.11.3 Failure Actions
          4. 6.4.2.11.4 Error Codes
      3. 6.4.3 Interface Tests
        1. 6.4.3.1 Temperature Sensor Interface
          1. 6.4.3.1.1 Failure Actions
        2. 6.4.3.2 DLPC230-Q1 to TPS99000-Q1 SPI Interface
          1. 6.4.3.2.1 Failure Actions
        3. 6.4.3.3 DLPC230-Q1 to TPS99000-Q1 ADC Interface
          1. 6.4.3.3.1 Failure Actions
        4. 6.4.3.4 DMD Socket Connectivity Test
          1. 6.4.3.4.1 Configuration
          2. 6.4.3.4.2 Execution
          3. 6.4.3.4.3 Failure Actions
          4. 6.4.3.4.4 Error Codes
  9. 7 Commands - Boot Application
    1. 7.1 Command Table
    2. 7.2 Command Definitions
      1. 7.2.1  System Reset - Write (00h)
      2. 7.2.2  Read Pre-Fetch - Write (01h)
      3. 7.2.3  Read Activate (02h)
      4. 7.2.4  System Software Version - Read (B0h)
      5. 7.2.5  Flash Device ID - Read (B1h)
      6. 7.2.6  Short Status - Read (C0h)
      7. 7.2.7  Error History - Read (C1h)
      8. 7.2.8  Clear Short Status Errors - Write (C2h)
      9. 7.2.9  Clear Error History - Write (C3h)
      10. 7.2.10 Flash Full Erase - Write (E0h)
      11. 7.2.11 Flash Write Data - Write (E1h)
      12. 7.2.12 Flash Verify Data - Write (E2h)
      13. 7.2.13 Flash Interface Rate - Write (E3h)
      14. 7.2.14 Flash Interface Rate - Read (E4h)
  10. 8 Commands - Main Application
    1. 8.1 Mode Availability
    2. 8.2 Command Definitions
      1. 8.2.1  System Reset - Write (00h)
      2. 8.2.2  Read Pre-Fetch - Write (01h)
      3. 8.2.3  Read Activate (02h)
      4. 8.2.4  Operating Mode - Write (03h)
      5. 8.2.5  Operating Mode - Read (04h)
      6. 8.2.6  Source Select - Write (05h)
      7. 8.2.7  Source Select - Read (06h)
      8. 8.2.8  Prepare for Source Change - Write (07h)
      9. 8.2.9  Display Image Orientation - Write (18h)
      10. 8.2.10 Display Image Orientation - Read (19h)
      11. 8.2.11 System Mode Select - Write (1Ch)
      12. 8.2.12 System Mode Select - Read (1Dh)
      13. 8.2.13 Execute Batch Command Set - Write (21h)
      14. 8.2.14 Execution Delay - Write (22h)
      15. 8.2.15 GPIO Configure - Write (23h)
      16. 8.2.16 GPIO Configure - Read (24h)
      17. 8.2.17 GPIO Outputs - Write (25h)
      18. 8.2.18 GPIO Outputs - Read (26h)
      19. 8.2.19 GPIO Reserved - Read (27h)
      20. 8.2.20 Execute Non-Periodic BIST - Write (28h)
      21. 8.2.21 External Video Checksum Control - Write (29h)
      22. 8.2.22 External Video Checksum Control - Read (2Ah)
      23. 8.2.23 External Video Checksum Settings - Write (2Bh)
      24. 8.2.24 External Video Checksum Settings - Read (2Ch)
      25. 8.2.25 DMD Socket Connectivity Test - Write (2Dh)
      26. 8.2.26 DMD Socket Connectivity Test - Read (2Eh)
      27. 8.2.27 Average Picture Level Control - Write (2Fh)
      28. 8.2.28 Average Picture Level Control - Read (30h)
      29. 8.2.29 Loss Of Ping Control - Write (33h)
      30. 8.2.30 Loss Of Ping Control - Read (34h)
      31. 8.2.31 PWM Temperature Management Enable - Write (35h)
      32. 8.2.32 PWM Temperature Management Enable - Read (36h)
      33. 8.2.33 PWM Temperature Management Source - Write (37h)
      34. 8.2.34 PWM Temperature Management Source - Read (38h)
      35. 8.2.35 PWM Temperature Management Duty Cycle - Read (39h)
      36. 8.2.36 Headlight Ping - Write (46h)
      37. 8.2.37 PWM Control - Write (47h)
      38. 8.2.38 PWM Control - Read (48h)
      39. 8.2.39 Illumination Transition Rate - Write (49h)
      40. 8.2.40 Illumination Transition Rate - Read (4Ah)
      41. 8.2.41 De-gamma Select - Write (54h)
      42. 8.2.42 De-gamma Select - Read (55h)
      43. 8.2.43 ADC Measurements - Read (5Ch)
      44. 8.2.44 ADC Single Measurement - Read (63h)
      45. 8.2.45 Illumination Bin Select - Write (70h)
      46. 8.2.46 Illumination Bin Select - Read (71h)
      47. 8.2.47 TPS99000-Q1 TIA1 Trims - Write (86h)
      48. 8.2.48 TPS99000-Q1 TIA1 Trims - Read (87h)
      49. 8.2.49 TPS99000-Q1 TIA1 Gain - Write (88h)
      50. 8.2.50 TPS99000-Q1 TIA1 Gain - Read (89h)
      51. 8.2.51 TPS99000-Q1 TIA1 Capacitance - Write (8Ah)
      52. 8.2.52 TPS99000-Q1 TIA1 Capacitance - Read (8Bh)
      53. 8.2.53 TPS99000-Q1 TIA1 Dark Offsets - Write (8Ch)
      54. 8.2.54 TPS99000-Q1 TIA1 Dark Offsets - Read (8Dh)
      55. 8.2.55 TPS99000-Q1 TIA1 Input Offsets - Write (8Eh)
      56. 8.2.56 TPS99000-Q1 TIA1 Input Offsets - Read (8Fh)
      57. 8.2.57 TPS99000-Q1 Drive Mode - Read (93h)
      58. 8.2.58 TPS99000-Q1 ADC Configuration - Write (94h)
      59. 8.2.59 TPS99000-Q1 ADC Configuration - Read (95h)
      60. 8.2.60 TPS99000-Q1 Illumination Sync Control - Write (96h)
      61. 8.2.61 TPS99000-Q1 Illumination Sync Control - Read (97h)
      62. 8.2.62 TPS99000-Q1 TIA2 Control - Write (98h)
      63. 8.2.63 TPS99000-Q1 TIA2 Control - Read (99h)
      64. 8.2.64 LED Drive Errors - Read (9Ah)
      65. 8.2.65 LED Drive Errors Clear - Write (9Bh)
      66. 8.2.66 TPS99000-Q1 Test Mux Select - Write (9Ch)
      67. 8.2.67 TPS99000-Q1 Test Mux Select - Read (9Dh)
      68. 8.2.68 Flash Data Type Select - Write (A0h)
      69. 8.2.69 Flash Erase Data - Write (A1h)
      70. 8.2.70 Flash Write Data - Write (A2h)
      71. 8.2.71 Flash Read Data - Read (A3h)
      72. 8.2.72 Flash Verify Data - Write (A4h)
      73. 8.2.73 Flash Block Count - Read (A5h)
      74. 8.2.74 Flash Block CRCs - Read (A6h)
      75. 8.2.75 Flash Structure Version - Read (A7h)
      76. 8.2.76 Flash Data Size - Read (A9h)
      77. 8.2.77 System Software Version - Read (B0h)
      78. 8.2.78 Flash Device ID - Read (B1h)
      79. 8.2.79 DLPC230-Q1 Device ID - Read (B2h)
      80. 8.2.80 DMD Device ID - Read (B3h)
      81. 8.2.81 TPS99000-Q1 Device ID - Read (B4h)
      82. 8.2.82 System Temperatures - Read (B5h)
      83. 8.2.83 Current Source Information - Read (B6h)
      84. 8.2.84 Current Display Information - Read (B8h)
      85. 8.2.85 System Information - Read (BAh)
      86. 8.2.86 Flash Interface Rate - Read (BBh)
      87. 8.2.87 Short Status - Read (C0h)
      88. 8.2.88 Error History - Read (C1h)
        1. 8.2.88.1 Information Bits - Command or Communication
        2. 8.2.88.2 Information Bits - System Voltage
        3. 8.2.88.3 Information Bits - DMD High Speed Interface Training
        4. 8.2.88.4 Information Bits - DMD Memory Test
      89. 8.2.89 Clear Short Status Errors - Write (C2h)
      90. 8.2.90 Clear Error History - Write (C3h)
  11. 9 Commands - Diagnostic Interface
    1. 9.1 Diagnostic Command Read Procedure
    2. 9.2 Command Table
    3. 9.3 Command Definitions
      1. 9.3.1 Read Pre-Fetch - Write (01h)
      2. 9.3.2 Read Activate (02h)
      3. 9.3.3 Diagnostic Interface Status - Read (F0h)
      4. 9.3.4 Diagnostic Interface Status Clear - Write (F1h)
  12. 10Flash Configuration
    1. 10.1 Overview
    2. 10.2 System Mode Overview
    3. 10.3 Scratchpad Data
      1. 10.3.1 CRC
      2. 10.3.2 Block Number
      3. 10.3.3 Version (Major, Minor, Patch)
      4. 10.3.4 Custom Data
  13.   A Error Codes
    1.     A.1 Boot Application
    2.     A.2 Main Application
  14.   Revision History

7.2.6 Short Status - Read (C0h)

This command is used to read the short status from hardware.  This is the only read command that does not require the use of Read Pre-Fetch and Read Activate commands.  Refer to Section 3.5 for more information on the Short Status protocol.

Command Parameters

No command parameters.

Return Parameters

Table 7-8 Short Status Return Parameters (Boot)
BYTEBITSDESCRIPTION
17:6Application / Mode

0x0: Boot application

0x1: Main application - Standby

0x2: Main application - Display

5Emergency Shutdown

0x0: Not activated

0x1: Activated

4Reserved
3Read Data Available

0x0: No data available

0x1: Data available

2System Busy

0x0: Not busy

0x1: Busy

1Request in Progress

0x0: Not in progress

0x1: In progress

0System Initialized

0x0: Not initialized

0x1: Initialized

27:0Execution Command Tag
4:315BIST Error

0x0: No error

0x1: Error

14Operational Error

0x0: No error

0x1: Error

13Command Error

0x0: No error

0x1: Error

12Communication Error

0x0: No error

0x1: Error

11:0CMD/COMM Error Code

A diagram of these short status bits is shown in Figure 7-1.

DLPC230-Q1 Short Status Bit DefinitionFigure 7-1 Short Status Bit Definition

The bits are described in Table 7-9.

Table 7-9 Short Status Field Descriptions (Boot)
BIT FIELDDEFINITION
System InitializedIndicates that the system software is ready to accept commands for processing. Typically this would be set by the Main Application, except when the system is forced to stay in boot.
Request in ProgressThis bit is used to inform the host that a commanded task is being performed. When the task is initiated, this bit will be set to 1 and when the operation has completed the bit will be cleared to 0. If the task was a BIST, the results for the requested test will be valid once the bit has been cleared by embedded software. Further requests can be started after this.
System BusyThis bit is used to inform the host that the system's receive FIFO is full. The host should not send any more commands when the system is busy, or the commands and associated data may be lost. The Host is free to send commands when the system is not busy.
Read Data AvailableIndicates when read data is available after the host has sent a Read Prefetch command. When data is available, the Host should send the Read Activate command to fetch the requested data. The Host should always fetch requested data using the Read Activate command before sending another Read Prefetch command. If a Read Prefetch command is sent before the data from a previous Read Prefetch command has been fetched, the previous data will be flushed, and the latest requested data will be made available for fetching by Read Activate. There will be no error indication that this has occurred.
Emergency ShutdownThis bit is used to indicate that the system has automatically gone to Standby Mode due to a critical system error. The specifics of the error may be available via the Error History.
Application/ModeThese bits indicate whether the boot application or main application is being executed. During main application execution, the current operating mode is also specified.
Execution Command TagThis byte contains the command tag for the last write command received that has been executed, whether successful or not. This tag is used along with the Error Code to determine if the command associated with this tag was executed successfully or not. This byte is continually updated as new commands are received and executed.

In the Boot Application, this byte is also used for any system errors. For errors where the command tag is valid, the actual tag will be used. For errors where there is no command tag or the command tag may be invalid, a null (0h) command tag will be provide in this field. In both cases, the appropriate error code will be provided in the error code field.

Error CodeThe 12-bit error code is used to specify the last error received during system operation. The error code can indicate no error (error code = 0h), or indicate the error code for the most recent error to occur. This error code is continually updated as new errors occur. The Error History command can be used to obtain details about previous errors.

For any communication errors, the error code for this error will also be provided in this field.

Communication ErrorA flag set to indicate a communication error, which is used to indicate a problem with the transmission/reception of a command. Some examples are:
  • RXFIFO overflow
  • Command transmission terminated early (the host didn't provide enough SPI clock pulses for all requested data).
  • Command transmission terminated late (the host provided too many SPI clock pulses for requested data).
Command ErrorA flag set to indicate a command error, or an error in the action requested by the command. Some examples are:
  • Command executed in an invalid operating mode
  • CRC Error in Command Header
  • CRC Error in Payload (Bulk Command)
  • Invalid command op-code
  • Invalid command parameter (for example, out of range)
  • Incorrect number of command parameters
  • Non-periodic BIST failure when BIST started by command
  • Error erasing, writing, or reading flash when commanded
  • Flash overflow error
Operational ErrorA flag set to indicate an operational error, which are any errors that don't fall into one of the other three error categories. Some examples are:
  • Sequence CRC error
  • CMT CRC error
  • Sequence / CMT mismatch error
  • Periodic BIST failure
  • Unable to communicate with TPS99000-Q1
  • Unable to communicate with temperature sensor
BIST ErrorA flag set to indicate a non-periodic or periodic BIST error.