MPC8544DS Freescale Semiconductor, MPC8544DS Datasheet - Page 479

• Manufacturer Part Number: MPC8544DS
• Description: BOARD DEVELOPMENT SYSTEM 8544
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC III™r
• Type: MPUr

Specifications of MPC8544DS

• Contents: Board
• Processor To Be Evaluated: MPC8544E
• Data Bus Width: 32 bit
• Interface Type: Ethernet, I2C
• Operating Supply Voltage: - 0.3 V to + 1.1 V
• Leaded Process Compatible: Yes
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• For Use With/related Products: MPC8544
• For Use With: PPC8544EVTANG - EVAL MPC8544 783FCPBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Freescale Semiconductor
Master Xmit
Generate
STOP
Master Rcv
I2CCR[TXAK]
Write next byte
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
Set
to I2CDR
Y
EOI
Next-to-last
I2CCR[TXAK]
N
byte
N
Y
Figure 11-11. Example I
Set
I2CCR[MTX]
== 1
End of address phase for
Last byte
master receive mode?
== 1
Read I2CDR
Last byte
and store
Y
N
EOI
Clear I2CCR[MTX]
A
(dummy read)
Only one byte
Read I2CDR
I2CSR[RXAK]
to receive?
N
Generate
STOP
== 0
== 0
Y
Y
N
A
== 1
2
C Interrupt Service Routine Flowchart
Clear I2CSR[MIF]
Slave Xmit
I2CCR[MSTA]
Slave Data Cycle
Clear I2CCR[MTX]
(dummy read)
Read I2CDR
Clear I2CSR[MAL]
== 1
I2CSR[MAAS]
Slave Addr. Phase
EOI
Set I2CCR[MTX]
I2CSR[RXAK]
== 0
Write I2CDR
== 0
== 1
== 1
Write next byte
== 0
to I2CDR
== 1
== 1
I2CSR[MAL]
EOI
I2CSR[SRW]
B
EOI
I2CCR[MTX]
B
I2CSR[MAAS]
Clear I2CCR[MTX]
Slave Received
Dummy read
== 0
== 0
Set I2CCR[TXAK]
== 0
N
== 0
Read I2CDR
All done
and store
== 1
Y
B
I
2
C Interfaces
11-25