Mode Flow Of I; Interface - Fujitsu F2MC-16LX Hardware Manual

2
CHAPTER 22 I C INTERFACE
22.3.2

Mode Flow of I

Figure 22.3-3 shows the flow of mode transitions for the I
2
Flow of I C Interface Mode Transitions
540
2
C Interface
Figure 22.3-3 I
Slave receive mode
SCC
NO
YES
TRX,AAS,LRB:reset
FBT:set
YES
SCC&BB=1
NO
BB:set
8 bits received
Address comparison
Match
Acknowledgement
AAS: set
output
INT:set SCL line
retained at "L"
NO
TRX=1
YES
Slave send mode
INT: 0 write
FBT:reset
SCL line freed
Send/receive
YES
Acknowledgement
received?
NO
TRX:reset
2
C interface.
2
C Mode Flow
RSC:set
RSC,FBT:reset
Slave receive mode
YES
SCC
NO
AAS,LRB,BB,RSC
:reset