mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 250

• Manufacturer Part Number: mcf5407
• Description: Mcf5407 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

I
8-14
2
C Programming Examples
Dummy Read
Switch to
Rx Mode
from I2DR
Y
ADDR Cycle
Byte to I2DR
(Master RX)
Transmitted
Write Next
Last Byte
RXAK= 0
End of
?
?
?
N
Y
Figure 8-10. Flow-Chart of Typical I
N
STOP Signal
Generate
TX
Y
N
Set TXAK =1
TX/Rx
?
Y
Read Data
from I2DR
Byte to be
Byte to be
And Store
2nd Last
Read
Read?
RX
Last
MCF5407 User’s Manual
N
N
?
STOP Signal
Generate
Y
Y
RTE
Master
Clear
Mode?
IIF
(Read)
Write Data
to I2DR
Set TX
Mode
2
Address
Cycle
C Interrupt Routine
N
N
Y
Dummy Read
from I2DR
Clear IAL
IAAS=1
Set RX
SRW=1
Mode
Y
?
?
N
(WRITE)
Tx Next
Byte
Y
Y
Y
Dummy Read
Arbitration
from I2DR
Switch to
ACK from
Receiver
Rx Mode
IAAS=1
Tx/Rx
Lost?
?
?
?
N
TX
N
N
Read Data
from I2DR
Data
Cycle
and Store
RX