SLAZ312AD October   2012  – May 2021 MSP430F5527

 

  1. 1Functional Advisories
  2. 2Preprogrammed Software Advisories
  3. 3Debug Only Advisories
  4. 4Fixed by Compiler Advisories
  5. 5Nomenclature, Package Symbolization, and Revision Identification
    1. 5.1 Device Nomenclature
    2. 5.2 Package Markings
      1.      PN80
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  ADC25
    2. 6.2  ADC27
    3. 6.3  ADC29
    4. 6.4  ADC42
    5. 6.5  ADC69
    6. 6.6  BSL6
    7. 6.7  BSL7
    8. 6.8  COMP10
    9. 6.9  CPU21
    10. 6.10 CPU22
    11. 6.11 CPU23
    12. 6.12 CPU26
    13. 6.13 CPU27
    14. 6.14 CPU28
    15. 6.15 CPU29
    16. 6.16 CPU30
    17. 6.17 CPU31
    18. 6.18 CPU32
    19. 6.19 CPU33
    20. 6.20 CPU34
    21. 6.21 CPU35
    22. 6.22 CPU37
    23. 6.23 CPU39
    24. 6.24 CPU40
    25. 6.25 CPU47
    26. 6.26 DMA4
    27. 6.27 DMA7
    28. 6.28 DMA8
    29. 6.29 DMA10
    30. 6.30 EEM9
    31. 6.31 EEM11
    32. 6.32 EEM13
    33. 6.33 EEM14
    34. 6.34 EEM15
    35. 6.35 EEM16
    36. 6.36 EEM17
    37. 6.37 EEM19
    38. 6.38 EEM21
    39. 6.39 EEM23
    40. 6.40 FLASH33
    41. 6.41 FLASH34
    42. 6.42 FLASH35
    43. 6.43 FLASH37
    44. 6.44 JTAG20
    45. 6.45 JTAG26
    46. 6.46 JTAG27
    47. 6.47 MPY1
    48. 6.48 PMAP1
    49. 6.49 PMM9
    50. 6.50 PMM10
    51. 6.51 PMM11
    52. 6.52 PMM12
    53. 6.53 PMM14
    54. 6.54 PMM15
    55. 6.55 PMM17
    56. 6.56 PMM18
    57. 6.57 PMM20
    58. 6.58 PORT15
    59. 6.59 PORT16
    60. 6.60 PORT19
    61. 6.61 PORT24
    62. 6.62 RTC3
    63. 6.63 RTC6
    64. 6.64 SYS10
    65. 6.65 SYS12
    66. 6.66 SYS14
    67. 6.67 SYS16
    68. 6.68 SYS18
    69. 6.69 TAB23
    70. 6.70 USB4
    71. 6.71 USB6
    72. 6.72 USB8
    73. 6.73 USB9
    74. 6.74 USB10
    75. 6.75 USB11
    76. 6.76 USB12
    77. 6.77 USB13
    78. 6.78 USCI26
    79. 6.79 USCI30
    80. 6.80 USCI31
    81. 6.81 USCI34
    82. 6.82 USCI35
    83. 6.83 USCI39
    84. 6.84 USCI40
    85. 6.85 WDG4
  7. 7Revision History

USB6

USB Module

Category

Functional

Function

Endpoint0 STALL bit can be cleared during USBIEPCNFG_0/ USBOEPCNFG_0 register access

Description

According to the MSP430F5xx Family User's Guide (SLAU208), the STALL bit in the Endpoint0 configuration register should be set by software when there is either an unsupported control request or a control request fail or an endpoint halt, and this bit is automatically cleared by the next setup transaction. In correct operation, the hardware clearing of the Endpoint0 STALL bit should not occur when the configuration registers USBIEPCNFG_0/USBOEPCNFG_0 are being accessed even though the next set-up transaction required to clear the STALL bit has occurred. Rather, the hardware clear of the STALL bit should wait until the access is finished, and then clear the bit.  

However due to the erratum, if the next setup transaction occurs while the USBIEPCNFG_0/USBOEPCNFG_0 registers are being accessed, the STALL bit will be cleared immediately.  This can be a problem during write accesses; for example, if the application tries to set the STALL bit and the next set-up transaction has cleared it. In this case, a valid STALL condition might be missed.

Workaround

- Set the STALL bit inside the SETUP ISR. The STALL bit is automatically cleared on entering SETUP ISR so the user does not need to check it is cleared before setting STALL = 1.

or

- Poll the STALL bit to verify it is cleared, then set STALL = 1.

NOTE: The USB stacks supplied by TI implement the first software workaround.