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Renesas RX Series

Renesas RX Series
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R01UH0823EJ0100 Rev.1.00 Page 1402 of 1823
Jul 31, 2019
RX23W Group 38. Serial Peripheral Interface (RSPIa)
Figure 38.43 Procedure for Determining the Form of Serial Transmission in Master Mode
In this section, a frame is the combination of the data (SPDR) and the settings (SPCMDm).
Figure 38.44 Concept of a Frame
SPSCR
Command
pointer control
SPCMD0
SPCMD1
SPCMD2
SPCMD3
SPCMD4
SPCMD5
SPCMD6
SPCMD7
SPCKD
SSLND SPND
Transfer format determiner
SCKDEN
SLNDEN SPNDEN
CPHA
CPOL
BRDV[1:0]
SSLA[2:0]
SSLKP
SPB[3:0]
LSBF
Sequence length
setting
Determining
reference command
Loading transfer format settings
Frame
+
Settings
Data
Data
(SPDR)
Settings
(SPCMD)

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