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12-48
Ver.0.10
SERIAL I/O
12.6 Transmit Operation in UART Mode
12.6.3 Initial Settings for UART Transmission
To transmit data in UART mode, initialize the serial I/O following the procedure described below.
(1) Setting SIO Transmit/Receive Mode Register
• Set the register to UART mode
• Set parity (when enabled, select odd/even)
• Set stop bit length
• Set character length
Note : During UART mode, settings of the internal/external clock select bit have no effect (only
the internal clock is useful).
(2) Setting SIO Transmit Control Register
• Select the clock divider's divide-by ratio.
(3) Setting SIO Baud Rate Register
Set a baud rate generator value. (Refer to Section 12.6.1, "Setting the UART Baud Rate.")
(4) Setting SIO Interrupt Mask Register
• Enable or disable SIO transmit interrupt.
(5) Setting the Interrupt Controller (SIO Transmit Interrupt Control Register)
When you use a transmit interrupt, set its priority level.
(6) Setting DMAC
When you issue DMA transfer requests to the internal DMAC when the transmit buffer is empty,
set the DMAC. (Refer to Chapter 9, "DMAC.")
(7) Selecting pin functions
Because the serial I/O related pins serve dual purposes (shared with input/output ports), set pin
functions. (Refer to Chapter 8, "Input/Output Ports and Pin Functions.")
Содержание M32170F3VFP
Страница 19: ...CHAPTER 1 CHAPTER 1 OVERVIEW 1 1 Outline of the 32170 1 2 Block Diagram 1 3 Pin Function 1 4 Pin Layout ...
Страница 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Страница 56: ...2 2 14 Ver 0 10 This is a blank page ...
Страница 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Страница 192: ...6 6 58 Ver 0 10 INTERNAL MEMORY 6 9 Precautions to Be Taken When Rewriting Flash Memory This is a blank page ...
Страница 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Страница 498: ...10 10 228 Ver 0 10 MULTIJUNCTION TIMERS 10 9 TOM Output related 16 bit Timer This is a blank page ...
Страница 550: ...11 11 52 Ver 0 10 A D CONVERTERS 11 4 Precautions on Using A D Converters This is a blank page ...
Страница 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Страница 710: ...14 14 16 Ver 0 10 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 746: ...16 16 20 Ver 0 10 WAIT CONTROLLER 16 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 757: ...CHAPTER 18 CHAPTER 18 OSCILLATION CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit ...
Страница 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Страница 798: ...19 19 36 Ver 0 10 JTAG 19 6 Precautions about Board Design when Connecting JTAG This is a blank page ...
Страница 830: ...21 21 24 Ver 0 10 PRELIMINARY PRELIMINARY This is a blank page ELECTRICAL CHARACTERISTICS 21 5 AC Characteristics ...
Страница 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Страница 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 837: ...Appendix 2 1 32170 Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...