32186 datasheet(12/1032 Pages) RENESAS

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Contents-7

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

CHAPTER 12 SERIAL INTERFACE

12.1 Outline of Serial Interface ................................................................................................................. 12-2

12.2 Serial Interface Related Registers .................................................................................................... 12-5

12.2.1 SIO Interrupt Related Registers ............................................................................................... 12-6

12.2.2 SIO Transmit Control Registers ................................................................................................ 12-14

12.2.3 SIO Transmit/Receive Mode Registers .................................................................................... 12-15

12.2.4 SIO Transmit Buffer Registers .................................................................................................. 12-19

12.2.5 SIO Receive Buffer Registers .................................................................................................. 12-20

12.2.6 SIO Receive Control Registers ................................................................................................ 12-21

12.2.7 SIO Baud Rate Registers ......................................................................................................... 12-24

12.2.8 SIO Special Mode Registers .................................................................................................... 12-27

12.3 Transmit Operation in CSIO Mode ................................................................................................... 12-29

12.3.1 Setting CSIO Baud Rate .......................................................................................................... 12-29

12.3.2 Initializing CSIO Transmission .................................................................................................. 12-30

12.3.3 Starting CSIO Transmission ..................................................................................................... 12-32

12.3.4 Successive CSIO Transmission ............................................................................................... 12-32

12.3.5 Processing at End of CSIO Transmission ................................................................................ 12-33

12.3.6 Transmit Interrupts ................................................................................................................... 12-33

12.3.7 Transmit DMA Transfer Request .............................................................................................. 12-33

12.3.8 Example of CSIO Transmit Operation ...................................................................................... 12-35

12.4 Receive Operation in CSIO Mode .................................................................................................... 12-37

12.4.1 Initialization for CSIO Reception .............................................................................................. 12-37

12.4.2 Starting CSIO Reception .......................................................................................................... 12-39

12.4.3 Processing at End of CSIO Reception ..................................................................................... 12-39

12.4.4 About Successive Reception .................................................................................................... 12-40

12.4.5 Flags Showing Status of CSIO Receive Operation .................................................................. 12-41

12.4.6 Example of CSIO Receive Operation ....................................................................................... 12-42

12.5 Notes on Using CSIO Mode ............................................................................................................. 12-44

12.6 Transmit Operation in UART Mode .................................................................................................. 12-46

12.6.1 Setting UART Baud Rate ......................................................................................................... 12-46

12.6.2 UART Transmit/Receive Data Formats .................................................................................... 12-46

12.6.3 Initializing UART Transmission ................................................................................................. 12-48

12.6.4 Starting UART Transmission .................................................................................................... 12-50

12.6.5 Successive UART Transmission .............................................................................................. 12-50

12.6.6 Processing at End of UART Transmission ............................................................................... 12-50

12.6.7 Transmit Interrupts ................................................................................................................... 12-50

12.6.8 Transmit DMA Transfer Request .............................................................................................. 12-51

12.6.9 Example of UART Transmit Operation ..................................................................................... 12-52

12.7 Receive Operation in UART Mode ................................................................................................... 12-54

12.7.1 Initialization for UART Reception .............................................................................................. 12-54

12.7.2 Starting UART Reception ......................................................................................................... 12-56

12.7.3 Processing at End of UART Reception .................................................................................... 12-56

12.7.4 Example of UART Receive Operation ...................................................................................... 12-58

12.7.5 Start Bit Detection and Data Sampling Timing during UART Reception ................................... 12-60

12.8 Fixed Period Clock Output Function ................................................................................................. 12-61

12.9 Notes on Using UART Mode ............................................................................................................ 12-62

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