SPRU566S June   2003  – April 2024 SM320F28335-EP , TMS320C28341 , TMS320C28342 , TMS320C28343 , TMS320C28343-Q1 , TMS320C28344 , TMS320C28345 , TMS320C28346 , TMS320C28346-Q1 , TMS320F2800132 , TMS320F2800133 , TMS320F2800135 , TMS320F2800137 , TMS320F2800152-Q1 , TMS320F2800153-Q1 , TMS320F2800154-Q1 , TMS320F2800155 , TMS320F2800155-Q1 , TMS320F2800156-Q1 , TMS320F2800157 , TMS320F2800157-Q1 , TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , 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 , TMS320F2801 , TMS320F2801-Q1 , TMS320F28015 , TMS320F28016 , TMS320F28016-Q1 , TMS320F2802 , TMS320F2802-Q1 , TMS320F28020 , TMS320F280200 , TMS320F28021 , TMS320F28022 , TMS320F28022-Q1 , TMS320F280220 , TMS320F28023 , TMS320F28023-Q1 , TMS320F280230 , TMS320F28026 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027 , TMS320F28027-Q1 , TMS320F280270 , TMS320F28027F , TMS320F28027F-Q1 , TMS320F28030 , TMS320F28030-Q1 , TMS320F28031 , TMS320F28031-Q1 , TMS320F28032 , TMS320F28032-Q1 , TMS320F28033 , TMS320F28033-Q1 , TMS320F28034 , TMS320F28034-Q1 , TMS320F28035 , TMS320F28035-Q1 , TMS320F28044 , TMS320F28050 , TMS320F28051 , TMS320F28052 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28053 , TMS320F28054 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F28055 , TMS320F2806 , TMS320F2806-Q1 , TMS320F28062 , TMS320F28062-Q1 , TMS320F28062F , TMS320F28062F-Q1 , TMS320F28063 , TMS320F28064 , TMS320F28065 , TMS320F28066 , TMS320F28066-Q1 , TMS320F28067 , TMS320F28067-Q1 , TMS320F28068F , TMS320F28068M , TMS320F28069 , TMS320F28069-Q1 , TMS320F28069F , TMS320F28069F-Q1 , TMS320F28069M , TMS320F28069M-Q1 , TMS320F28075 , TMS320F28075-Q1 , TMS320F2808 , TMS320F2808-Q1 , TMS320F2809 , TMS320F2810 , TMS320F2810-Q1 , TMS320F2811 , TMS320F2811-Q1 , TMS320F2812 , TMS320F2812-Q1 , TMS320F28232 , TMS320F28232-Q1 , TMS320F28234 , TMS320F28234-Q1 , TMS320F28235 , TMS320F28235-Q1 , TMS320F28332 , TMS320F28333 , TMS320F28334 , TMS320F28335 , TMS320F28335-Q1 , TMS320F28374D , TMS320F28374S , TMS320F28375D , TMS320F28375S , TMS320F28375S-Q1 , TMS320F28376D , TMS320F28376S , TMS320F28377D , TMS320F28377D-EP , TMS320F28377D-Q1 , TMS320F28377S , TMS320F28377S-Q1 , TMS320F28379D , TMS320F28379D-Q1 , TMS320F28379S , TMS320F28384D , TMS320F28384S , TMS320F28386D , TMS320F28386S , TMS320F28388D , TMS320F28388S , TMS320F28P550SJ , TMS320F28P559SJ-Q1 , TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1 , TMS320R2811 , TMS320R2812

 

  1.   1
  2.   Read This First
    1.     About This Manual
    2.     Related Documentation from Texas Instruments
    3.     Support Resources
    4.     Trademarks
  3. 1Abbreviations
    1. 1.1 Gen 1 Device Abbreviations
    2. 1.2 Gen 2 Device Abbreviations
    3. 1.3 Gen 3 Device Abbreviations
  4. 2Peripherals Available Per Device
    1. 2.1 Gen 1 Device Peripherals
      1. 2.1.1 TMS320x280x, TMS320x2801x Peripherals
      2. 2.1.2 TMS320x281x Peripherals
      3. 2.1.3 TMS320F2823x Peripherals
      4. 2.1.4 TMS320F2833x Peripherals
      5. 2.1.5 TMS320x2834x Peripherals
    2. 2.2 Gen 2 Device Peripherals
      1. 2.2.1 TMS320F2802x Peripherals
      2. 2.2.2 TMS320F2803x Peripherals
      3. 2.2.3 TMS320x2804x Peripherals
      4. 2.2.4 TMS320F2805x Peripherals
      5. 2.2.5 TMS320F2806x Peripherals
      6. 2.2.6 TMS320F28M35x Peripherals
      7. 2.2.7 TMS320F28M36x Peripherals
    3. 2.3 Gen 3 Device Peripherals
      1. 2.3.1  TMS320F2807x Peripherals
      2. 2.3.2  TMS320F28002x Peripherals
      3. 2.3.3  TMS320F28003x Peripherals
      4. 2.3.4  TMS320F28004x Peripherals
      5. 2.3.5  TMS320F280013x Peripherals
      6. 2.3.6  TMS320F280015x Peripherals
      7. 2.3.7  TMS320F2837xD Peripherals
      8. 2.3.8  TMS320F2837xS Peripherals
      9. 2.3.9  TMS320F2838x Peripherals
      10. 2.3.10 TMS320F28P55x Peripherals
      11. 2.3.11 TMS320F28P65x Peripherals
  5. 3Peripheral Descriptions
    1. 3.1 Coprocessor and C28x Extended Instruction Sets
      1. 3.1.1 Control Law Accelerator (CLA) Module
      2. 3.1.2 Floating-Point Unit (FPU)
      3. 3.1.3 Viterbi, Complex Math, and CRC Unit (VCU)
      4. 3.1.4 Cyclic Redundancy Check (VCRC) Module
      5. 3.1.5 Trigonometric Math Unit (TMU)
    2. 3.2 System Peripherals
      1. 3.2.1  Advance Encryption Standard (AES) Accelerator Module
      2. 3.2.2  Background CRC-32 (BGCRC) Module
      3. 3.2.3  Boot ROM
      4. 3.2.4  Direct Memory Access (DMA) Module
      5. 3.2.5  Dual-Clock Comparator (DCC)
      6. 3.2.6  Embedded Pattern Generator (EPG) Module
      7. 3.2.7  Embedded Real-time Analysis and Diagnostic (ERAD) Module
      8. 3.2.8  External Memory Interface (EMIF)
      9. 3.2.9  External Peripheral Interface (EPI)
      10. 3.2.10 Event Manager (EV) Module
      11. 3.2.11 External Interface (XINTF) Module
      12. 3.2.12 Hardware Built-in Self-Test (HWBIST) Module
      13. 3.2.13 Host Interface Controller (HIC) Module
      14. 3.2.14 Lockstep Comparator Module (LCM)
      15. 3.2.15 Memory Power On Self-Test (MPOST) Module
      16. 3.2.16 Micro Cyclic Redundancy Check (µCRC) Module
      17. 3.2.17 Neural-Network Processing Unit (NNPU)
      18. 3.2.18 Watchdog Module
      19. 3.2.19 NMI Watchdog Module
      20. 3.2.20 System Control and Interrupts
    3. 3.3 Control Peripherals
      1. 3.3.1  Analog-to-Digital Converter (ADC) Modules
        1. 3.3.1.1 Analog-to-Digital Converter (ADC) Module
        2. 3.3.1.2 Analog-to-Digital Converter (ADC) Wrapper Module
      2. 3.3.2  Configurable Logic Block (CLB) Module
      3. 3.3.3  Comparator (COMP) Module
      4. 3.3.4  Comparator Subsystem (CMPSS) Module
      5. 3.3.5  Comparator Subsystem LITE (CMPSS_LITE) Module
      6. 3.3.6  Digital-to-Analog Converter (DAC) Module
      7. 3.3.7  Enhanced Capture (eCAP) Module
      8. 3.3.8  Enhanced Pulse Width Modulator (ePWM) Module
      9. 3.3.9  Enhanced Quadrature Encoder Pulse (eQEP) Module
      10. 3.3.10 High-Resolution Capture (HRCAP) Module
      11. 3.3.11 InstaSPIN™ Solutions
        1. 3.3.11.1 InstaSPIN-FOC™
        2. 3.3.11.2 InstaSPIN-MOTION™
      12. 3.3.12 Programmable Gain Amplifier (PGA) Module
      13. 3.3.13 Sigma Delta Filter Module (SDFM)
    4. 3.4 Communication Peripherals
      1. 3.4.1  Controller Area Network (DCAN) Module
      2. 3.4.2  Enhanced Controller Area Network (eCAN) Module
      3. 3.4.3  EtherCAT® SubordinateDevice Controller (ESC)
      4. 3.4.4  Ethernet Media Access Controller (EMAC) Module
      5. 3.4.5  Fast Serial Interface (FSI) Module
      6. 3.4.6  C28x Inter-Integrated Circuit (I2C) Module
      7. 3.4.7  M3 Inter-Intergrated Circuit (I2C) Module Type Description
      8. 3.4.8  Local Interconnect Network (LIN) Module
      9. 3.4.9  Modular Controller Area Network (MCAN)
      10. 3.4.10 Multichannel Buffered Serial Port (McBSP) Module
      11. 3.4.11 Power Management Bus (PMBus) Module
      12. 3.4.12 Serial Communications Interface (SCI) Module
      13. 3.4.13 Serial Peripheral Interface (SPI) Module
      14. 3.4.14 Synchronous Serial Interface (SSI) Module
      15. 3.4.15 Universal Asynchronous Receiver/Transmitter (UART) Module
      16. 3.4.16 Universal Parallel Port (uPP) Module
      17. 3.4.17 Universal Serial Bus (USB) Module
  6. 4Revision History

Floating-Point Unit (FPU)

The C28x plus floating-point (C28x+FPU) processor extends the capabilities of the C28x fixed-point CPU by adding registers and instructions to support IEEE single-precision floating point operations. Devices with the C28x+FPU include the standard C28x register set plus an additional set of floating-point unit registers. The additional floating-point unit registers are the following:

  • Eight floating-point result registers, RnH (where n = 0–7)
  • Floating-point Status Register (STF)
  • Repeat Block Register (RB)

All of the floating-point registers, except the repeat block register, are shadowed. This shadowing can be used in high-priority interrupts for fast context save and restore of the floating-point registers.

For more information, see the TMS320C28x Extended Instruction Sets Technical Reference Manual.

Table 3-2 lists the FPU types, including device-specific differences within each type.

Table 3-2 Floating-Point Unit (FPU) Type Description
TypeDescriptionDevices CoveredDevice-Specific Options
Original FPU Instruction Set2806x, 2807x, 28004x, 280013x, 280015x, 2833x, 2834x, 2837xD, 2837xS, 28P55x, M35x, M36x
28002x, 28003xNew instructions for Fast Integer Division.
2838x, 28P65xAdditional double-precision float instruction set (FPU64). New instructions for Fast Integer Division.