SPRUIW3 October   2021 TMS320F280033 , TMS320F280034 , TMS320F280034-Q1 , TMS320F280036-Q1 , TMS320F280036C-Q1 , TMS320F280037 , TMS320F280037-Q1 , TMS320F280037C , TMS320F280037C-Q1 , TMS320F280038-Q1 , TMS320F280038C-Q1 , TMS320F280039 , TMS320F280039-Q1 , TMS320F280039C , TMS320F280039C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1

 

  1.   Trademarks
  2. 1Feature Differences Between F28004x and F28003x
    1. 1.1 F28004x and F28003x Feature Comparison
  3. 2PCB Hardware Changes
    1. 2.1 PCB Hardware Changes for the 100-Pin PZ Package
      1. 2.1.1 100-Pin PZ Migration for Existing PCB
      2. 2.1.2 100-Pin PZ Migration for New PCB Design
    2. 2.2 PCB Hardware Changes for the 64-Pin PM Package
      1. 2.2.1 64-Pin PM Migration for New and Existing PCB
  4. 3Feature Differences for System Consideration
    1. 3.1 New Features in F28003x
      1. 3.1.1  TMU Type1
      2. 3.1.2  Fast Integer Division (FINTDIV)
      3. 3.1.3  Host Interface Controller (HIC)
      4. 3.1.4  Background CRC (BGCRC)
      5. 3.1.5  Standby Low Power Mode
      6. 3.1.6  X1 GPIO Functionality
      7. 3.1.7  Diagnostic Features (PBIST/HWBIST)
      8. 3.1.8  Advance Encryption Standard (AES)
      9. 3.1.9  Secure Boot/JTAG Lock
      10. 3.1.10 Modular Controller Area Network (MCAN)
      11. 3.1.11 Embedded Pattern Generator (EPG)
      12. 3.1.12 Live Firmware Update (LFU)
    2. 3.2 Communication Module Changes
    3. 3.3 Control Module Changes
    4. 3.4 Analog Module Differences
    5. 3.5 Other Device Changes
      1. 3.5.1 XTAL Module
      2. 3.5.2 PLL
      3. 3.5.3 PIE Channel Mapping
      4. 3.5.4 Bootrom
      5. 3.5.5 CLB and Motor Control Libraries
      6. 3.5.6 ERAD
      7. 3.5.7 GPIO
      8. 3.5.8 AGPIO
      9. 3.5.9 ERROR Status
    6. 3.6 Power Management
      1. 3.6.1 LDO/VREG
      2. 3.6.2 DCDC
      3. 3.6.3 POR/BOR
      4. 3.6.4 Power Consumption
    7. 3.7 Memory Module Changes
    8. 3.8 GPIO Multiplexing Changes
    9. 3.9 Analog Multiplexing Changes
  5. 4Application Code Migration From F28004x to F28003x
    1. 4.1 C2000Ware Header Files
    2. 4.2 Linker Command Files
    3. 4.3 Minimum Compiler Version Requirement for TMU Type 1
    4. 4.4 C2000Ware Examples
  6. 5Specific Use Cases Related to F28003x New Features
    1. 5.1 HIC
    2. 5.2 FINTDIV
    3. 5.3 TMU Type1
    4. 5.4 AES
    5. 5.5 MCAN
    6. 5.6 EPG
  7. 6EABI Support
    1. 6.1 Flash API
    2. 6.2 NoINIT Struct Fix (Linker Command)
    3. 6.3 Pre-Compiled Libraries
  8. 7References

3.1.1 TMU Type1

Two instructions have been added to the instruction set of the Trigonometrical Math Unit (TMU) on F28003x to support computation of the floating-point power function “powf”. These instructions calculate the inverse binary exponent in base two logarithm and can be combined to compute the power of a floating-point number raised to the power of another floating-point number.

This calculation would typically take 300 cycles using library emulation, but takes less than ten cycles using the new instructions. An example of the application of the power function is non-linear proportional integral derivative control (NLPID), which is a component of the C2000 Digital Control Library found in C2000Ware.