PD671XXX-8 Datasheet, PDF (1/14 Pages) Microsemi Corporation – 24-Channel PoE AF and AT DIMM

PD671xxx - 8 / 12 / 24-Channel PoE AF and AT DIMM
Data Sheet (Non-confidential)
DESCRIPTION
Microsemi’s™ new and unique family of Power over Ethernet
(PoE) modules enable next-generation network devices to
share data and power over the same cable. The PD671xxx
PoE PSE modules are fit / form compatible with the standard
plug-in memory modules used in personal computers (Dual
Inline Memory Modules - DIMMs) (see Figure 1 and Figure 12).
Thus, the use of these modules permit network devices to be
designed for up to 96 ports, with fewer ports actually installed.
Additional modules can be inserted in the field at any time.
The PD671xxx (8, 12 or 24 ports DIMM) includes a wide range
of functions. Some of these modules include the PD69000
micro-controller unit (PoE controller) for Enhanced features and
a flexible work environment in a DIMM master or DIMM slave
configuration (refer to Ordering Information, page 2).
Microsemi’s PoE PD671xxx DIMMs implement real time
mechanisms including detection, classification, port real-time
protection and system level functions (power management and
MIB support).
Microsemi’s PD69012 IC, 12-channel PoE Manager IC is at the
heart of these modules. PD671xxx DIMMs enable the
detection of IEEE802.3at-2009 Type 1 (low power) or Type 2
(high power) Powered Devices (PDs), ensuring safe power
feeding and removal over Ethernet ports. The PD69012-based
DIMMs detect and disable disconnected ports, using DC or AC
disconnection methods. The DIMMs are embedded in multi-
port and highly populated Ethernet switches, requiring a
minimum of external components.
The PD671xxx DIMM is fully backwards compatible with the
PD670xx DIMM and can be dropped into existing designs.
Figure 1: PoE PD67124 DIMM
IMPORTANT: For the most current data, consult Microsemi’s website:
http://www.microsemi.com
KEY FEATURES
Š IEEE 802.3AT-2009 and
IEEE802.3AF-2003 compliant
Š Up to 30 W per port power PoE
solution
Š RoHS compliant
Š Supports IETF PoE MIB (RFC 3621)
Š Up to 24 power ports per single DIMM
Š Up to 96 ports in a system, using
master and slave configuration
Š Thermal protection per port
Š Thermal monitoring capabilities
Š Pre-standard detection methods
(Cisco Inline Power and Power over
LAN Legacy)
Š Non-standard terminals supported
Š DC disconnect with DC modulation
Š AC disconnect function utilizing
external diodes
Š PD 2-events classification function
Š Operates using a single input (44 to
57 VDC)
Š I²C or UART host interface
Š Host communication is backward
compatible with PD67024M
communication, or Marvell® ISSR
Š Programmable over current protection
per port
Š Built-in power management algorithm
Š Internal power-on reset mechanism
Š Fast port shutdown on power supply
failure
Š Supports Backplane Power
Management
Š Automatic on/off sequencer for 96
ports
Š Disable/enable power per port
Š Continuous port current monitoring
Š Serial interface for LED indicator
support
Š Backwards compatible with PD670xx
Š Fit/form compliant with168-pin DIMM
JEDEC MO-161F, 3.3 V
Š Space efficient compact design
Š Factory pre-tested, for plug-and-play
integration
Š Safety standard compliant: UL / cUL
per UL60950-1 (mounted on
Microsemi evaluation board)