12
12-39
Rev.1.0
SERIAL I/O
12.4 Receive Operation in CSIO Mode
12.4 Receive Operation in CSIO Mode
12.4.1 Initial Settings for CSIO Reception
To receive data in CSIO mode, initialize the serial I/O following the procedure described below.
Note, however, that because the receive shift clock is derived from operation of the transmit circuit,
you need to execute transmit operation even when you only want to receive data.
(1) Setting SIO Transmit/Receive Mode Register
•
Set the register to CSIO mode
•
Select the internal or an external clock
(2) Setting SIO Transmit Control Register
•
Select the clock divider's divide-by ratio (when internal clock selected)
(3) Setting SIO Baud Rate Register
When the internal clock is selected, set a baud rate generator value. (Refer to Section 12.3.1,
"Setting the CSIO Baud Rate.")
(4) Setting SIO Interrupt Mask Register
•
Enable or disable the transmit buffer empty interrupt (SIO Interrupt Mask Register)
•
Select the cause of receive interrupt (receive finished/error) (Cause of Receive Interrupt Select
Register)
(5) Setting SIO Receive Control Register
Set the receive enable bit
(6) Setting the Interrupt Controller (SIO Transmit Interrupt Control Register)
When you use a transmit interrupt or receive interrupt during transmission/reception, set its
priority level.
(7) Setting the DMAC
When you generate a DMA transfer request to the internal DMAC when the transmit buffer is
empty or transmission is completed, set the DMAC. (Refer to Chapter 9, "DMAC.")
Содержание 32172
Страница 20: ... This is a blank page 16 ...
Страница 21: ...1 1 Overview 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Layout CHAPTER 1 CHAPTER 1 OVERVIEW ...
Страница 44: ...1 1 24 Rev 1 0 This is a blank page Overview 1 4 Pin Layout ...
Страница 58: ...2 2 14 Rev 1 0 This is a blank page CPU 2 6 Data Formats ...
Страница 122: ...4 4 26 Rev 1 0 This is a blank page EIT 4 13 Precautions on EIT ...
Страница 200: ...7 7 6 Rev 1 0 This is a blank page RESET 7 4 Precautions to Be Taken Immediately after Reset ...
Страница 240: ...8 8 40 Rev 1 0 This is a blank page INPUT OUTPUT PORTS AND PIN FUNCTIONS 8 5 Precautions on Input Output Ports ...
Страница 298: ...9 9 58 Rev 1 0 This is a blank page DMAC 9 4 Precautions on Using DMAC ...
Страница 416: ...10 10 118 Rev 1 0 This is a blank page INPUT OUTPUT TIMERS 10 6 TOM Output Related 16 bit Timers ...
Страница 658: ...14 14 16 Rev 1 0 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 718: ...16 16 16 Rev 1 0 This is a blank page D A CONVERTERS 16 3 Functional Description of the D A Converters ...
Страница 766: ...18 18 22 Rev 1 0 WAIT CONTROLLER 18 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 776: ...19 19 10 Rev 1 0 RAM BACKUP MODE 19 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 777: ...CHAPTER 20 CHAPTER 20 OSCILLATION CIRCUIT 20 1 Oscillator Circuit 20 2 Clock Generator Circuit ...
Страница 782: ...20 20 6 Rev 1 0 OSCILLATION CIRCUIT 20 2 Clock Generator Circuit This is a blank page ...
Страница 856: ...23 23 26 Rev 1 0 This is a blank page ELECTRICAL CHARACTERISTICS 23 6 AC Characteristics ...
Страница 857: ...24 1 A D Conversion Characteristics CHAPTER 24 CHAPTER 24 STANDARD CHARACTERISTICS ...
Страница 859: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 861: ...Appendix 2 1 M32R E Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 865: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...