Cypress S6J3200 Series, Manual, Page: 602 / 1355

CHAPTER 21:Ethernet MAC
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 601
9. IEEE Std 1588 version 2 (Ethernet multicast)
10. IEEE Std 1588 version 2 (Ethernet multicast with VLAN)
Note: IEEE Std 1588 version 1 (IEEE Std 1588-2002)
Unicast PTP frame recognition is enabled via bit 20 of the Network Control register. The unicast
addresses themselves are programmable via the PTP Unicast IP Destination Address register for which
there are two (ETHERNETn_rx_ptp_unicast and ETHERNETn_tx_ptp_unicast). The first holds the RX
unicast IP destination address and the other the TX unicast destination address. The PTP Unicast IP
Destination Address register should only be changed when the unicast PTP frame recognition is disabled.
Example of a Sync frame in the IEEE Std 1588 version 1 format:
Preamble/SFD 55555555555555D5
h
DA (Octets 0 – 5)
SA (Octets 6 – 11)
Type (Octets 12 – 13) 0800h
IP stuff (Octets 14 – 22)
UDP (Octet 23) 11h
IP stuff (Octets 24 – 29)
IP DA (Octets 30 - 32) E00001h
IP DA (Octet 33) 81h or 82h or 83h or 84h
source IP port (Octets 34 – 35)
dest IP port (Octets 36 – 37) 013Fh
other stuff (Octets 38 – 42)
version PTP (Octet 43) 01h
other stuff (Octets 44 – 73)
control (Octet 74) 00h
other stuff (Octets 75 – 168)
Example of a Delay_Req frame in the IEEE Std 1588 version 1 format:
Preamble/SFD 55555555555555D5
h
DA (Octets 0 – 5)
SA (Octets 6 – 11)
Type (Octets 12 – 13) 0800h
IP stuff (Octets 14 – 22)
UDP (Octet 23) 11h
IP stuff (Octets 24 – 29)
IP DA (Octets 30 - 32) E00001h
IP DA (Octet 33) 81h or 82h or 83h or 84h
source IP port (Octets 34 – 35)
dest IP port (Octets 36 – 37) 013Fh
other stuff (Octets 38 – 42)
version PTP (Octet 43) 01h
other stuff (Octets 44 – 73)
control (Octet 74) 01h
other stuff (Octets 75 – 168)
For IEEE Std 1588 version 1 messages Sync and Delay_Req frames are indicated by the Ethernet MAC
if the frames type field indicates TCP/IP, UDP protocol is indicated, the destination IP address is