PD69012 - 12 Ports Power Over Ethernet Manager

Microsemi

Analog Mixed Signal Group

2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308

page 1

Copyright

© 2009

Rev. 1.0, 2009-03-03

Description _________________

Microsemi’s PD69012 Power over Ethernet (PoE)

Manager chip integrates power, analog and state of

the art embedded core logic into a single 80-pin,

plastic QFP package. The device is used in Ethernet

switches and Midspans to enable network devices to

share power and data over the same cable.

PD69012 device is a 12-port, mixed-signal, high-

voltage Power over Ethernet driver. It enables

detection of IEEE802.3af-2003 compliant PDs

(Powered Devices) and IEEE802.3AT High Power

Devices, thus, ensuring safe power feeding and

disconnection of ports. With full digital control via a

serial communication interface and a minimum of

external components, the device integrates into multi-

port and highly populated Ethernet switches and

routers.

The PD69012 executes all real time functions as

specified in the IEEE802.3af-2003 (“AF”) standard

and IEEE802.3at High Power (“AT”) functionality,

including load detection, “AF” and “AT” classification

and port status monitoring. In addition it performs

system level activities such as: power management

and MIB support for system management. The PoE

device is designed to detect and disable

disconnected ports utilizing both DC and AC

disconnection methods, as specified in the

IEEE 802.3af-2003 standard.

The PD69012 is designed to support 2 main

configurations:

• Auto mode: For Basic ”AF” and “AT” PSE

equipment

• Enhanced mode: For High End, Extended

features set of AF and AT PSE equipment

Pin Configuration _____________

I2CINI

Vcc2p5

QGND

Ext_reg

ASIC_INI

ADC2p5

Iref

Reset_n

SDA_out

SCL

SCK

SDA

LSD

LSC

Disable_ports_n

CS_EEPROM_n/ LSL /

Interrupt_n

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

Vmain

Ref_port_neg

CP_OUT

CP_IN

Vport_pos0

Vport_pos1

Vport_pos2

Vport_pos3

Vport_pos4

Vport_pos5

Vport_pos6

Vport_pos7

Vport_pos8

Vport_pos9

Vport_pos10

Vport_pos11

Dgnd2

I2CINI

Vcc2p5

Qgnd

Ext_reg

ASIC_INI

ADC2p5

Iref

Reset_n

SCL

SCK

MOSI

MISO

SDA

CS_n

CS_EEPROM_n/ LSL /

Interrupt_n

Vperi

Disable_ports_n

PD69012

Date Code

Supported Features __________

PD69012 Auto Mode Features:

♦

Fully IEEE802.3af-2003 compliant

♦

Designed to support IEEE802.3at including two-event

classification

♦

Supports Pre-standard PD detection

♦

Supports Cisco devices detection

♦

IETF Power Ethernet MIB (RFC 3621) compliant

♦

Single DC voltage input (44v-57v)

♦

Wide temperature range: -40° C to +85° C

♦

Low thermal dissipation (0.5Ω sense resistor)

♦

Drives 12 independent 2-pairs power ports or 6

independent 4-pairs ports

♦

Can cascade up to 8 PoE devices (96 ports)

♦

EEPROM interface for software patching and

parameter configuration

♦

I

♦

Supports Interrupt out pin

♦

Dynamic Power management

♦

Emergency power management supporting 3

Configurable Power Bank I/Os

♦

Direct register communication

♦

Direct LED drive

♦

Continuous monitoring per port and system data

♦

Parameter setting per port and per system

♦

Power soft start algorithm

♦

Thermal monitoring/protection

♦

Voltage monitoring/protection

♦

H/W disable ports input

♦

Built in 3.3 V regulator

♦

Internal power on reset

♦

Enhanced SPI bus for internal communication

♦

External EEPROM for system parameters update

♦

SW ROM patch option

♦

RoHS compliant

Enhanced Modes Additional Features:

♦

I

♦

Serial Communication Protocol backwards compatible

with PD63000 and PDIC66000

♦

Additional monitoring

♦

Extended parameter setting

♦

Port matrix for flexible PCB layout

♦

Field upgradeable software

♦

Emergency Power Management with 4 power

supplies

Ordering Information __________

Part number

Temperature range

Package

PART

TEMP. RANGE

PIN PACKAGE

PD69012

-40 to +85 °C

LQFP 80 pin

This datasheet refers to ICs with date code "XAA0843" or later.

drawing. Where “0843" is the date code, “08” is the year (2008),

and “43” is the week.