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Section 16 Renesas Serial Peripheral Interface
Page 844 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
(f) Transfer Operation Flowchart (CPHA = 0)
Figure 16.20 is a flowchart illustrating a transfer in SPI operation when this module is used in
slave mode with the CPHA bit in the command register 0 (SPCMD0) set to 0.
Copy received data from the shift
register to the receive buffer
Detect mode fault
error
RSPCK cycle count
Receive buffer
status
SSL input level
Overrun error
status
SSL input level
SSL input level
MISO Hi-Z
Negate
Negate
Negate
Empty
Error occurred
Full
Assert
Assert
Assert
No error
No error
Shorter than data length
Equal to data length
Start serial transfer
End of initialization in
slave mode
Error handling
Continue serial
transfer
End of transfer
Overrun error
status
Error
occurred
Error handling
No
Ye s
Figure 16.20 Transfer Operation Flowchart in Slave Mode
(CPHA = 0)