NEC Renesas V850/SC1 User Manual page 357

Figure 11-13. Timing Chart in Single Transfer Mode (1/2)
(a) In transmit/receive mode, data length: 8 bits, transfer direction: MSB first, no interrupt delay,
single transfer mode, operation mode: CKPn bit = 0, DAPn bit = 0
SCKn
(I/O)
SOn
0
(output)
SIn
1
(input)
Reg_R/W Write 55H to SOTBLn register
SOTBLn
register
SIOLn
register
SIRBLn
register
CSOTn
bit
INTCSIn
interrupt
Remarks 1. n = 5, 6
2. Reg_R/W: Internal signal. This signal indicates that receive data buffer register (SIRBn/SIRBLn)
read or transmit data buffer register (SOTBn/SOTBLn) write was performed.
CHAPTER 11 SERIAL INTERFACE FUNCTION
1 0 1
0 1 0
55H (transmit data)
ABH 56H ADH
User's Manual U15109EJ3V0UD
0 1 0
1 0 1
5AH B5H 6AH
1 (55H)
0 (AAH)
D5H AAH
AAH
355