NEC PD75402A - Manual (Page 125)

114
CHAPTER 5. PERIPHERAL HARDWARE FUNCTIONS
Fig. 5-49 Address Transmission form Master Device to Slave Device (WUP = 1)
RELT
Setting CMDT
Setting
Serial Transmit Operation
Write
to SIO
IRQCSI
Gene-
ration ACKD
Setting
SCK
Stop-
page
Interrupt Servicing
(Preparation for Next Serial Transfer)
1 2 3 4 5 6 7 8 9
ACK BUSY READY
BUSY
Clear-
ance
ACKT
Setting
BUSY
Clear-
ance BUSY
Output ACK
Output IRQCSI
Gene-
ration
(When SVA = SIO)
Serial Receive Operation
CMDD
Clear-
ance
RELD
Setting
CMDD
Setting
A7 A6 A5 A4 A3 A2 A1 A0
Address
Master Device Processing
(Transmission Side)
Program
Processing
Hardware
Operation
Transfer Line
SCK Pin
SB0 Pin
Slave Device Processing
(Reception Side)
Program
Processing
Hardware
Operation
WUP 0
CMDD
Setting
CMDT
Setting