Input/Output Signal Application; Classic Clock Synchronization Example - Intel EP80579 Manual

IEEE 1588-2008 Hardware Assist Interface—Intel
Figure 142. Classic Clock Synchronization Example
NODE 1
3:00 AM
20.1

Input/Output Signal Application

The IEEE 1588-2008 hardware assist has a total of six input/output signals, as
described in the following tables.
ASMSSIG
AMMSSIG
1588_TESTMODE_DATA
1588_PPS
1588_RX_SNAP
1588_TX_SNAP
This section describes how the signals shown in the tables above can be used for
debugging, event capture, and event trigger. The usage of the input/output signals can
vary from application-to-application and software implementation.
All of the above signals can be accessed on the Development Board via the IEEE 1588
Hardware Assist Interface Connector J53.
®
Intel EP80579 Integrated Processor Product Line
Order Number: 320068-005US
®
EP80579 Integrated Processor Product Line
NETWORK
NO IEEE-1588
NODE 2 NODE 3
3:03 AM 3:05 AM
Inputs
• Auxiliary Slave Mode Snapshot
• Must be pulled down with a 10K ohm
resistor when the port is not connected to
an interfacing device.
• Auxiliary Master Mode Snapshot
• Must be pulled down with a 10K ohm
resistor when the port is not connected to
an interfacing device.
Outputs
• Test Mode Data
• Can be left NC when the port is not
connected to an interfacing device.
• Test Pulse Per Second
• Can be left NC when the port is not
connected to an interfacing device.
• Receive Snapshot Taken
• Can be left NC when the port is not
connected to an interfacing device.
• Transmit Snapshot Taken
• Can be left NC when the port is not
connected to an interfacing device.
NETWORK
IEEE-1588
ASSIST
NODE 1 NODE 2
3:00 AM 3:00 AM
GRAND MASTER SLAVE
Full Duplex
NODE 3
3:00 AM
SLAVE
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