NEC PD75402A - Manual (Page 117)

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CHAPTER 5. PERIPHERAL HARDWARE FUNCTIONS
(5) Signals
The operation of signals and flags in SBIC in the SBI mode are shown in Figs. 5-42 to 5-47, and SBI signals are
listed in Table 5-8.
Fig. 5-42 RELT, CMDT, RELD & CMDD Operation (Master)
Fig. 5-43 RELT, CMDT, RELD & CMDD Operation (Slave)
Tramsfer Start Directive
SIO
SCK
SB0
RELT
CMDT
RELD
CMDD
Transfer Start Directive Write to SIO
SIO
SCK
So Latch
RELT
(Master)
CMDT
(Master)
RELD
CMDD
When Address Matches
When Address Does not Match
1 2 3 4 5 6 7 8 9
D7 D6 D5 D4 D3 D2 D1 D0