Renesas RL78/G13 - Table of Contents

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RL78/G13 Handshake-based SPI Master Transmission/Reception

R01AN6883EJ0100 Rev.1.00 Page 2 of 38

June.15.23

Contents

1. Specifications .......................................................................................................................... 4

1.1 Outline of CSI Communication ................................................................................................................ 4

1.2 Outline of Communication ....................................................................................................................... 5

1.3 Communication Format ........................................................................................................................... 7

1.4 Handshake .............................................................................................................................................. 7

1.5 Specification Details ................................................................................................................................ 8

2. Operation Confirmation Conditions ........................................................................................ 11

3. Related Application Notes...................................................................................................... 11

4. Hardware Descriptions .......................................................................................................... 12

4.1 Example of Hardware Configuration ..................................................................................................... 12

4.2 List of Pins to be Used .......................................................................................................................... 13

5. Description of the Software .................................................................................................... 14

5.1 List of Option Byte Settings ................................................................................................................... 14

5.2 List of Constants .................................................................................................................................... 14

5.3 List of Variables ..................................................................................................................................... 15

5.4 List of Functions .................................................................................................................................... 16

5.5 Function Specifications ......................................................................................................................... 16

5.6 Flowcharts ............................................................................................................................................. 22

5.6.1 Initialization process ............................................................................................................................ 22

5.6.2 Reset source reading .......................................................................................................................... 22

5.6.3 CPU clock Configuration ..................................................................................................................... 23

5.6.4 Port Configuration ............................................................................................................................... 23

5.6.5 SAU Configuration ............................................................................................................................... 24

5.6.6 CSI00 Configuration ............................................................................................................................ 25

5.6.7 TAU0 Configuration ............................................................................................................................. 26

5.6.8 Flowchart of Main Processing ............................................................................................................. 27

5.6.9 User Main Initialization ........................................................................................................................ 28

5.6.10 TAU0 channel 3 upper 8 bits start operation ....................................................................................... 29

5.6.11 CSI00 start operation .......................................................................................................................... 29

5.6.12 CSI00 Transmit/Receive Processing .................................................................................................. 30

5.6.13 INICSI00 interrupt processing ............................................................................................................. 31

5.6.14 Flowchart of CSI Status Check ........................................................................................................... 32

5.6.15 Flowchart of CSI Transmission/Reception .......................................................................................... 33

5.6.16 Flowchart of CSI Transmission ........................................................................................................... 34

5.6.17 Flowchart of CSI Reception ................................................................................................................. 35

5.6.18 Flowchart of Wait for Slave Response ................................................................................................ 36

6. Sample Code ......................................................................................................................... 37

7. Reference Documents ........................................................................................................... 37