UPD703111A Datasheet, PDF (565/974 Pages) NEC – 32-Bit Single-Chip Microcontroller

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CHAPTER 10 SERIAL INTERFACE FUNCTION
Figure 10-31. Single Mode
0
0
CSI data buffer register n
(CSIBUFn)
Transfer data 4
Transfer data 3
Transfer data 2
Transfer data 1
Transfer data 0
15
87
0
SFDB3nH
SFDB3nL
Transmit data CSI buffer register 3n
(SFDB3n)
Write
CSIBUFn pointer
SIOn load
CSIBUFn pointer
Difference
7
43
0
SFPn3 to
SFPn0
CSIBUF status register
3n (SFA3n)
Incremented
Incremented
SOn
SIOn
SIn
Remark n = 0, 1
SIRB3n
User’s Manual U16031EJ4V1UD
565