SPRACR3A april   2020  – may 2023 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1 , TMS320F28075 , TMS320F28075-Q1 , TMS320F28076 , TMS320F28374D , TMS320F28374S , TMS320F28375D , TMS320F28375S , TMS320F28375S-Q1 , TMS320F28376D , TMS320F28376S , TMS320F28377D , TMS320F28377D-EP , TMS320F28377D-Q1 , TMS320F28377S , TMS320F28377S-Q1 , TMS320F28378D , TMS320F28378S , TMS320F28379D , TMS320F28379D-Q1 , TMS320F28379S , TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1

 

  1.   CRC Engines in C2000 Devices
  2.   Trademarks
  3. 1 Introduction
    1. 1.1 Acronyms
  4. 2 BGCRC
  5. 3 GCRC
  6. 4 VCU CRC
  7. 5 ERAD CRC
  8. 6 CLA CRC (PSA)
    1. 6.1 CLA PSA
      1. 6.1.1 PSA for PAB
      2. 6.1.2 PSA for DWDB
      3. 6.1.3 Considerations While Computing the PSA
  9. 7 CLA-PROMCRC – CLA Program Integrity check
  10. 8 CRC Calculation Using Software
  11. 9 CRC Recommendation for Use-Cases
  12. 10CRC Modules Comparison
  13. 11CRC Engines vs Devices Mapping Table
  14. 12References
  15. 13Revision History

10 CRC Modules Comparison

Table 10-1 Properties of CRC Engines
Properties of CRC enginesBGCRCGCRCVCU CRCERAD CRCCLA PSA
Accessible coresC28x, CLACMC28xC28xCLA
CRC polynomial(s) usedFixed value = 0x04C11DB7User-programmable (up to 32 -bit polynomial)• 8-bit - 0x07
• 16-bit - CRC16 802.15.4, 0x8005, CRC-CCITT, 0x1021
• 24-bit - 0x5d6dcb
• 32-bit - CCITT-32, 0x04C11DB7, 0x1EDC6F41
VCRC supports user configurable size of data and configurable polynomials (value and size (up to 32 bits))		Fixed polynomialPAB : 1 + x + x2 + x22 + x32 (0x00400007)
DWDB: polynomial is configurable
PSA mode : 1 + x + x2 + x22 + x32 (0x00400007)
CRC32 mode : 1 + x + x2 + x4 + x5 + x7 + x8 + x10 + x11 + x12 + x16 + x22 + x23 + x26 + x32 (0x04C11DB7)
CRC-16-IBM : 1 + x2 + x15 + x16 (0x8005)
CRC16-CCITT : 1 + x5 + x12 + x16 (0x1021)
Seed valueUser-programmableUser-programmableUser-programmableUser-programmableUser-programmable
Input sizeMultiples of 256 Bytes
Min : 256 Bytes
Max : 256 KBytes		Any sizeAny size-Any size
Reverse bit order (reflected input)NoYesYesNoNo
Number of cycles for CRC computation1 cycle per 32-bit wordFixed polynomial : 1 cycle per 32-bit word
Others : 2n+2 cycles for n bytes of data		Fixed polynomials - 1 cycle per byte
Configurable polynomials - 3 cycles for 1-8 bits		11
Mode of data accessDirect access to memoryCPU/DMA needs to write the data one by one to a specific register in GCRCDirect access to memoryMonitoring bus accessMonitoring bus access