Altera 10-Gbps Ethernet MAC MegaCore Function Bedienungsanleitung PDF herunterladen (Seite 89)

7–22 Chapter 7: Functional Description

IEEE 1588v2

10-Gbps Ethernet MAC MegaCore Function User Guide February 2014 Altera Corporation

The IEEE 1588v2 option has the following features:

■ Supports 4 types of PTP clock on the transmit datapath:

■ Master and slave ordinary clock

■ Master and slave boundary clock

■ End-to-end (E2E) transparent clock

■ Peer-to-peer (P2P) transparent clock

■ Supports PTP with the following message types:

■ PTP event messages—Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp.

■ PTP general messages—Follow_Up, Delay_Resp, Pdelay_Resp_Follow_Up,

Announce, Management, and Signaling.

■ Supports simultaneous 1-step and 2-step clock synchronizations on the transmit

datapath.

■ 1-step clock synchronization—The MAC function inserts accurate timestamp

in Sync PTP message or updates the correction field with residence time.

■ 2-step clock synchronization—The MAC function provides accurate timestamp

and the related fingerprint for all PTP message.

■ Supports the following PHY operating speed random error:

■ 10 Gbps—Timestamp accuracy of ± 3 ns

■ 1 Gbps—Timestamp accuracy of ± 2 ns

■ 100 Mbps—Timestamp accuracy of ± 5 ns

■ Supports static error of ± 3 ns across all speeds.

■ Supports IEEE 802.3, UDP/IPv4, and UDP/IPv6 protocol encapsulations for the

PTP packets.

■ Supports untagged, VLAN tagged, and Stacked VLAN Tagged PTP packets, and

any number of MPLS labels.

■ Supports configurable register for timestamp correction on both transmit and

receive datapaths.

■ Supports ToD clock that provides a stream of 96-bit timestamps. For more

information about the ToD clock, refer to Appendix B, Time-of-Day (ToD) Clock.

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Altera 10-Gbps Ethernet MAC MegaCore Function Bedienungsanleitung Seite 89