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
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