12
12-40
Ver.0.10
SERIAL I/O
12.4 Receive Operation in CSIO Mode
12.4.5 Flags Indicating the Status of CSIO Receive Operation
Following flags are available that indicate the status of receive operation in CSIO mode.
• SIO Receive Control Register receive status bit
• SIO Receive Control Register receive-finished bit
• SIO Receive Control Register receive error bit
• SIO Receive Control Register overrun error bit
After reception is completed, you may read out the content of the SIO Receive Buffer Register, but
if the serial I/O finishes receiving the next data before you read, an overrun error occurs. In this
case, the data received thereafter is not transferred to the SIO Receive Buffer Register. To restart
reception, temporarily clear the receive enable bit to 0 and initialize the receive control block before
you restart.
The said receive enable bit can be cleared, when there are no receive errors(note) encountered, by
reading the lower byte from the SIO Receive Buffer Register or clearing the REN (receive enable)
bit. If any receive error has occurred, it can only be cleared by clearing the REN (receive enable) bit,
and cannot be cleared by reading the lower byte from the SIO Receive Buffer Register.
Note : Overrun error is the only error that can be detected during reception in CSIO mode.
Summary of Contents for M32170F3VFP
Page 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Page 56: ...2 2 14 Ver 0 10 This is a blank page ...
Page 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Page 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Page 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Page 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Page 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Page 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...