IEEE 802.3br-2016 pdf free download – Amendment 5: Specification and Management Parameters for Interspersing Express Traffic.
90. Ethernet support for time synchronization protocols
90.4 Time Synchronization Service Interface (TSSI)
90.4.3 Detailed service specification
90.4.3.1 TS_TX.indication primitive
Change 90.4.3.1.1 as follows:
90.4.3.1.1 Semantics
The semantics of the primitive are as follows:
TS_TX.indication(SFD, MM)
The SFD parameter can take only one possible value, DETECTED. When asserted (SFD = DETECTED), the TimeSync Client is notified that a valid SFD was detected by the gRS sublayer TS_SFD_Detect_TX function (see 90.5.1) in the xMII transmit signals. The MM parameter is mandatory when the MAC Merge sublayer (see Clause 99) is instantiated. The MM parameter, when present, can take one of two possible values, i.e., PMAC or EMAC. The value EMAC indi- cates the SMD-E (SFD) value has been detected at the xMII. The value PMAC indicates that an SMD-S value has been detected at the xMII (see Table 99–1). The MM parameter is not provided when MAC Merge sublayer is not instantiated.
90.4.3.2 TS_RX.indication primitive
Change 90.4.3.2.1 as follows:
90.4.3.2.1 Semantics
The semantics of the primitive are as follows:
TS_RX.indication(SFD, MM)
The SFD parameter can take only one possible value, DETECTED. When asserted (SFD = DETECTED), the TimeSync Client is notified that a valid SFD was detected by the gRS sublayer TS_SFD_Detect_RX function (see 90.5.2) in the xMII receive signals. The MM parameter is mandatory when the MAC Merge sublayer (see Clause 99) is instantiated. The MM parameter, when present, can take one of two possible values, i.e., PMAC or EMAC. The value EMAC indicates the SMD-E (SFD) value has been detected at the xMII. The value PMAC indicates that an SMD-S value has been detected at the xMII (see Table 99–1). The MM parameter is not provided when MAC Merge sublayer is not instantiated. 90.5 generic Reconciliation Sublayer (gRS) Change the first paragraph of 90.5 as follows: Within the scope of this clause, the term generic Reconciliation Sublayer (gRS) is used to denote any IEEE 802.3 Reconciliation Sublayer (RS) used to interface a MAC with any PHY supporting the TimeSync capability through the xMII. The behavior of the gRS depends on whether a MAC Merge sublayer (see Clause 99) is instantiated above the gRS.IEEE 802.3br pdf download.