SLAZ091Z October   2012  – May 2021 CC430F5125

 

  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.      RGZ48
    3. 5.3 Memory-Mapped Hardware Revision (TLV Structure)
  6. 6Advisory Descriptions
    1. 6.1  ADC39
    2. 6.2  ADC42
    3. 6.3  ADC69
    4. 6.4  AES1
    5. 6.5  BSL7
    6. 6.6  BSL14
    7. 6.7  COMP10
    8. 6.8  CPU21
    9. 6.9  CPU22
    10. 6.10 CPU36
    11. 6.11 CPU40
    12. 6.12 CPU46
    13. 6.13 CPU47
    14. 6.14 DMA4
    15. 6.15 DMA7
    16. 6.16 DMA10
    17. 6.17 EEM17
    18. 6.18 EEM19
    19. 6.19 EEM23
    20. 6.20 JTAG26
    21. 6.21 JTAG27
    22. 6.22 PMM11
    23. 6.23 PMM12
    24. 6.24 PMM14
    25. 6.25 PMM15
    26. 6.26 PMM18
    27. 6.27 PMM20
    28. 6.28 PMM26
    29. 6.29 PORT15
    30. 6.30 PORT19
    31. 6.31 PORT29
    32. 6.32 RF1A1
    33. 6.33 RF1A2
    34. 6.34 RF1A3
    35. 6.35 RF1A5
    36. 6.36 RF1A6
    37. 6.37 RF1A8
    38. 6.38 SYS12
    39. 6.39 SYS16
    40. 6.40 UCS11
    41. 6.41 USCI26
    42. 6.42 USCI30
    43. 6.43 USCI34
    44. 6.44 USCI35
    45. 6.45 USCI39
    46. 6.46 USCI40
  7. 7Revision History

RF1A2

RF1A Module

Category

Functional

Function

RXFIFO overflow flag does not work as intended

Description

In addition to having a 64-byte long RX FIFO, the CC430 has a one byte long pre-fetch buffer between the FIFO and the RF1A module. It also has buffers for status registers and CRC bytes. If more than 65 bytes have been received (the FIFO and the pre-fetch buffer are full) without reading the RX FIFO, the radio will enter RXFIFO_OVERFLOW state. There are, however, some cases where the radio will be stuck in RX state instead of entering RXFIFO_OVERFLOW state. Below is a table showing the register settings that will cause this problem. APPEND_STATUS is found in the PKTCTRL1 register, and CRC_EN is found in the PKTCTRL0 register.

Setting IOCFGx=0x06 should mean that the GDO signal is deasserted when the RXFIFO overflows. In the cases where the radio is stuck in RX state, the GDOx pin will not be deasserted.

When the radio is stuck in this RX state it draws current as if it was in the RX state, but it will not be able to receive any more data. The only way to get out of this state is to issue an SIDLE strobe and then flush the FIFO (SFRX).

Workaround

In applications where the packets are short enough to fit in the RX FIFO and one wants to wait for the whole packet to be received before starting to read the RX FIFO, for variable packet length mode (PKTCTRL0.LENGTH_CONFIG=1) the PKTLEN register should be set to 61 to make sure the whole packet including status bytes are 64 bytes or less (length byte (61) + 61 payload bytes + 2 status bytes = 64 bytes) or PKTLEN = 62 if fixed packet length mode is used (PKTCTRL0.LENGTH_CONFIG=0). In application where the packets do not fit in the RX FIFO, one must start reading the RX FIFO before it reaches its limit (64 bytes).