MPC8544COMEDEV Freescale Semiconductor, MPC8544COMEDEV Datasheet - Page 475

• Manufacturer Part Number: MPC8544COMEDEV
• Description: KIT DEV EXPRESS MPC8544COM
• Manufacturer: Freescale Semiconductor
• Type: MPUr

Specifications of MPC8544COMEDEV

• Contents: Board
• For Use With/related Products: MPC8544
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11.5
This section describes some programming guidelines recommended for the I
a recommended flowchart for I
The I
software must swap the bytes appropriately. This appropriate byte swapping is needed as I
byte registers. Also, an msync assembly instruction must be executed after each I
access to guarantee in-order execution.
The I
malfunctioning device may hold the bus captive. A good programming practice is for software to rely on
a watchdog timer to help recover from I
when the status bits returned after an interrupt are not consistent with what was expected due to illegal I
bus protocol behavior.
11.5.1
A hard reset initializes all the I
initializes the I
Freescale Semiconductor
1. All I
2. Update I2CFDR[FDR] and select the required division ratio to obtain the SCL frequency from the
3. Update I2CADR to define the slave address for this device.
2
2
C registers in this chapter are shown in big-endian format. If the system is in little-endian mode,
C controller does not guarantee its recovery from all illegal I
CCB (platform) clock. Note that the platform frequency must first be divided by two; see
Section 11.3.1.2, “I
Initialization/Application Information
2
C registers must be located in a cache-inhibited page.
Initialization Sequence
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
2
C unit:
ACS
0
0
0
2
C Frequency Divider Register
0
0
0
Figure 11-10. EEPROM Contents (continued)
2
2
C registers to their default states. The following initialization sequence
C interrupt service routines.
BYTE_EN
0
0
0
ADDR[10–17]
DATA[16–23]
DATA[24–31]
CRC[16–23]
CRC[24–31]
DATA[8–15]
ADDR[2–9]
CRC[8–15]
DATA[0–7]
CRC[0–7]
2
C bus hangs. The recovery routine should also handle the case
0
0
0
0
0
0
1
0
0
0
ADDR[0–1]
0
0
0
(I2CFDR),” for more details.
0
0
0
Cyclic Redundancy
Preload Command
Last Configuration
2
End Command
C bus activity. In addition, a
Check
2
C interface.
2
C register read/write
2
Figure 11-11
C registers are
I
2
C Interfaces
11-21
2
is
C