SPRZ193T January   2003  – December 2023 SM320F2812 , SM320F2812-EP , SMJ320F2812 , TMS320F2810 , TMS320F2810-Q1 , TMS320F2811 , TMS320F2811-Q1 , TMS320F2812 , TMS320F2812-Q1

 

  1.   1
  2. 1Introduction
  3. 2Device and Development Tool Support Nomenclature
  4. 3Device Markings
  5. 4Usage Notes and Known Design Exceptions to Functional Specifications
    1. 4.1 Usage Notes
      1. 4.1.1 PIE: Spurious Nested Interrupt After Back-to-Back PIEACK Write and Manual CPU Interrupt Mask Clear Usage Note
  6. 5Known Design Exceptions to Functional Specifications
    1.     Advisory
    2.     Advisory
    3.     Advisory
    4.     Advisory
    5.     Advisory
    6.     Advisory
    7.     Advisory
    8.     Advisory
    9.     Advisory
    10.     Advisory
    11.     Advisory
    12.     Advisory
    13.     Advisory
    14.     Advisory
    15.     Advisory
    16.     Advisory
    17.     Advisory
    18.     Advisory
    19.     Advisory
    20.     Advisory
    21.     Advisory
    22.     Advisory
    23.     Advisory
    24.     Advisory
    25.     Advisory
    26.     Advisory
    27.     Advisory
    28.     Advisory
    29.     Advisory
    30.     Advisory
    31.     Advisory
  7. 6Documentation Support
  8. 7Trademarks
  9. 8Revision History

Advisory

McBSP: Read Operations Decrement the McBSP FIFO

Revision(s) Affected

0, A, B, C, D, E, F and G

Details

A read operation from any of the following locations will cause the McBSP receive FIFO contents to decrement by 1, as if the McBSP DRR1 register had been read:

  • 0x7001 Reserved
  • 0x7401 EV−A T1CNT
  • 0x7C01 Reserved

The actual value read from the location is correct and is not affected by this issue.

Workaround(s)

  1. Ensure that the McBSP receive FIFO is empty before performing any read operation from any of these addresses.
  2. If McBSP traffic is common in the application and a timer count needs to be monitored, consider using a timer other then EV Timer1.