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IEEE 802.3at standard

Munin Lin
Prodigy 230 points
Other Parts Discussed in Thread: TPS23754

Hi,

1. POE have 2-Event classification and LLDP negotiation, i want to confirm 802.3at standard have support one or both?

2. How to implement DLL negotiation in TPS23754? 

Thanks.

  • 0
    TI__Expert 7990 points

    1) Compliant type 2 (high power) PDs support LLDP and 2-event class.  Type 1 devices are not required to do either, but may choose to do so. 

    2) LLDP is implemented by the same h/w and s/w that implements the Ethernet stack (OSI model implementation) in the device.  The TPS23754 is not involved in the LLDP, but does implement the 2-event (h/w) classification as described in the datasheet.