SGPAT10xx-100 User Guide
33515 Rev. A
http://www.transition.com/
IEEE 802.3at (
Max. PoE output power consumption up to 30W) is an updated
standard in progress referred to as PoE plus or 802.3at introduces increases
available power. Numerous non-standard schemes had been used prior to PoE
standardization to provide Power over Ethernet cabling. Some are still in active use.
The standard describes two types of devices:
1. Power Sourcing Equipment(PSE) and Powered Devices(PD), and
2. PSE provides power to the PD.
The PoE PSE+ converter may auto-detect PD and provide power via one of two
valid four-wire connections. In each four-wire connection, the two conductors
associated with a pair each carry the same nominal current in both magnitude and
polarity. Refer to following figure in conjunction with PSE pinout alternative table,
illustrates the valid alternatives.
PSE Pinout Alternative Table
PD and PSE Eight-Pin Modular Jack (RJ-45)
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