PD64012

12-channel PoE Manager

Preliminary Datasheet

Description __________________

PowerDsine’s™

PD64012

Power

over

Ethernet

(PoE) Manager chip integrates power, analog and

logic functions into a single 64-pin, plastic pack. It is

used in Ethernet switches and Midspans to allow next

generation network devices to share power and data

over the same cable.

The device is a twelve-port, mix-signal, high-voltage

Power over Ethernet driver. The PoE Manager allows

the

detection

of

IEEE

802.3af-2003

compliant

terminals, referred to as powered devices or PDs,

ensuring safe power feeding and removal over

Ethernet ports. With full digital control via a serial

communication interface and a minimum of external

components, the device integrates in multi-port and

highly populated Ethernet switches.

The PD64012 implements all real time functions

according to IEEE 802.3af-2003, including: detection,

classification, and port status monitoring; as well as

system level activities such as: power management

and MIB support, for system management. The PoE

Manager

is

designed

to

detect

and

disable

disconnected

ports,

using

both

DC

and

AC

disconnect methods, as defined in IEEE 802.3af-

2003.

The

PD64012

has

two

possible

working

configurations: an Auto mode (stand-alone topology)

for basic PoE functions and an Enhanced mode for

extended functions.

Pin Configuration _____________

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

PD64012

VPERI

EXT_REG

VCC2p5

ASICINI

I2CINI

ADC2p5

IREF

QGND

RESET_N

SDA

SCL

SCK

MOSI

MISO

CS0_N

Features ____________________

♦ IEEE 802.3af-2003 compliant

♦ Drives 12 independent power ports

♦ Can be cascaded for up to 48 ports, using a

master/slave architecture

♦ Supports IETF Power Ethernet MIB (RFC 3621)

♦ Thermal protection per port

♦ Thermal monitoring capabilities

♦ Multi-point resistor detection

♦ Supports DC modulation method under-current

detection according to IEEE 802.3af-2003

♦ AC & DC disconnect functions

♦ PD classification function

♦ Operates from single input (44 to 57 V)

♦ Supports foldback current limiting

♦ Digitally programmable overcurrent protection

per port

♦ Digitally programmable timers

♦ Power management algorithm for up to 48 ports

♦ Internal power-on reset

♦ Power soft-start algorithm

♦ Fast power shutdown, in case of power

supply failure

♦ Automatic on/off sequencer for up to 48 ports

♦ Disable/enable power feeding

♦ Continuous port current monitoring

VPORT_POS7

VPORT_POS1

VPORT_POS2

VPORT_POS3

VPORT_POS4

VPORT_POS5

VPORT_POS9

VPORT_POS10

VPORT_POS11

VMAIN

VPORT_POS8

CP_IN

CP_OUT

REF_PORT_NEG

VPORT_POS6

VPORT_POS0

DGND

04202AL1W07

♦ Supports back-off feature for Midspan

implementation

♦ Additional features for Enhanced mode:

Ordering Information

PART

TEMP. RANGE

PIN PACKAGE

PD64012

-20 to +85

°C

LQFP-64

Date code: see the bottom line (04202AL1W07) in

the Pin Configuration drawing. “0420” is the date

code. “04” the year (2004), while “20” is the week.

PowerDsine

The Power over Ethernet Pioneers

This document contains information that is proprietary to PowerDsine. As such, it is confidential and its disclosure is strictly prohibited by applicable law. If you and/or your company and PowerDsine

have executed a Non-Disclosure Agreement, then this document is being provided in connection with the Agreement, and the information contained herein is covered by the Agreement and under its

terms may not be disclosed or used and must be protected by you and/or your company.