NEC PD750008 User Manual
Page 189

169
CHAPTER 5 PERIPHERAL HARDWARE FUNCTIONS
Figure 5-67. Address Transfer Operation from Master Device to Slave Device (WUP = 1)
Program processing
Hardware operation
Program processing
SCK pin
12
345
6
78
9
SB0 or SB1 pin
A7
Hardware operation
A6
A5
A4
A3
A2
A1
A0
ACK
READY
Address
Master device processing (transmitter)
Transfer line
Slave device processing (receiver)
Interrupt handling (preparation for next serial transfer)
Set
ACKD
Serial transmission
Generate
IRQCSI
Clear
BUSY
Serial reception
Output
BUSY
Clear
BUSY
BUSY
Set
CMDT
Set
RELT
Set
CMDT
Write
to SIO
Stop
SCK
WUP<-0
Set
ACKT
Set
CMDD
Clear
CMDD
Set
RELD
Set
CMDD
Generate
IRQCSI
(When SVA = SIO)
Output
ACK