Microchip VSC8491 Manual

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ENT-AN1005

Application Note

IEEE 1588v2 Support in the Microsemi PHY API

Released

2016

IEEE 1588v2 Support in the Microsemi PHY API

VPPD-02802 ENT-AN1005 Application Note Revision 1.1

Contents

1 Revision History ............................................................................................................................. 1

1.1 Revision 1.1 ........................................................................................................................................

1.2 Revision 1.0 ........................................................................................................................................

2 IEEE 1588v2 Support in the Microsemi PHY API ............................................................................ 2

3 Feature Description ....................................................................................................................... 3

4 Functional Description ................................................................................................................... 7

4.1 FIFO .....................................................................................................................................................

4.1.1 Enable ...................................................................................................................................................... 7

4.1.2 FIFO Overflow_Underflow Indication ...................................................................................................... 7

4.2 Analyzer ..............................................................................................................................................

4.2.1 Enable_Disable ........................................................................................................................................ 7

4.2.2 Encapsulation Protocol(s) ........................................................................................................................ 7

4.2.3 Application Protocol(s) and Modes ......................................................................................................... 7

4.2.4 Operation Mode ...................................................................................................................................... 8

4.2.5 FrameSignature ..................................................................................................................................... 12

4.3 Timestamp Block .............................................................................................................................. 1

4.3.1 LocalLatency .......................................................................................................................................... 13

4.3.2 PathDelay .............................................................................................................................................. 13

4.3.3 DelayAsymmetry ................................................................................................................................... 14

4.3.4 Correction Field Overflow Indication .................................................................................................... 14

4.4 LocalTimeCounter ............................................................................................................................. 14

4.4.1 PtpTime ................................................................................................................................................. 14

4.4.2 SavedPtpTime ........................................................................................................................................ 14

4.4.3 LocalClockAdjustment ........................................................................................................................... 15

4.4.4 LocalClockIncrementDecrement ........................................................................................................... 15

4.4.5 LocalClockFrequency ............................................................................................................................. 15

4.5 Rewriter ............................................................................................................................................ 1

4.5.1 PreambleShrink ..................................................................................................................................... 15

4.5.2 StatisticCounters ................................................................................................................................... 15

4.6 TimestampFIFO ................................................................................................................................. 1

4.6.1 TxTimestampMode ............................................................................................................................... 15

4.6.2 TxTimestamps ....................................................................................................................................... 15

4.6.3 TxTimestampFifo Not Empty Indication ................................................................................................ 16

4.6.4 TxTimestampFifo Overflow Indication .................................................................................................. 16

4.6.5 TxTimestampFifo AgeTime .................................................................................................................... 16

4.6.6 RxTimestamp ......................................................................................................................................... 16

4.6.7 RxTimestampMode ............................................................................................................................... 16