Information

Application Examples
MPC8308 Product Brief PowerQUICC
™
II Pro Processor, Rev. 0
Freescale Semiconductor 5
Figure 4 illustrates how an industrial control application is able to take advantage of the IEEE 1588 precise
time synchronization.
Figure 4. IEEE 1588 in Industrial Control
As shown in the example on the top of the figure, IEEE 1588 allows precision control over a distributed
Ethernet network. Precise timing delivery allows drive units to be placed where required. Traditional
mechanical control mechanisms can limit the placement of systems.
In the bottom of the figure, timing synchronization at the drive enables flexibility in system configuration.
Issues due to mismatched cable lengths are minimized. Servos can be added or deleted without having to
rewire other servos. Industrial control applications typically augment IEEE 1588 hardware to provide
trigger inputs and outputs.
In summary, IEEE 1588 support in the MPC8308 enables accurate synchronization of clocks with varying
precision, resolution, and oscillator stability in distributed systems. IEEE 1588 synchronizes individual
clocks to maintain accurate distribution-wide timing. It enhances applications that need local clocks at
each control node and provides sub-microsecond synchronization over long distances using standard
cabling. Target applications for systems with IEEE 1588 are test and measurement appliances and
industrial control and automation.
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MPC8308
MPC8308
MPC8308
MPC8308
Servo Drive
Servo Drive
Master Time
Switch
Servo Drive
Servo Drive
Servo Drive
Master Time
Distributed Control
Peer Controlling Other Peers
Servo Drive