PD69100

DATASHEET

Copyright © 2010

Microsemi

Rev. 1.1, Dec. 2010

Analog Mixed Signal Group

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

3

PoE Controller Unit

TM

®



M A I N F E AT U RE S D ESC R IP TIO N

Function

Description

Supports up to eight PoE

devices – 96 ports

Up to 12 PoE devices can be cascaded, fitting into a 96 port PoE system that

utilizes one PoE controller (PD69100)

Power Management

The system supports three power management modes: Class (LLDP) mode,

Dynamic mode and Static mode. For more details see technical note 113, catalogue

number 06-0002-081.

Threshold Configuration

Configure overvoltage and under-voltage thresholds for disconnection purposes.

High power ports, 2 pairs

or 4 pairs

PoE devices can be configured (both hardware and software) to enable higher

current through ports (up to ~720mA) or double power RJ in case of 4 pairs.

Communication

Supports both I

2C and UART interfaces with Host CPU.

Legacy (capacitor)

Detection

Enables detection and powering of pre-standard devices (PDs).

LED Stream

Direct SPI interface to an external LED stream circuitry. Enables designers to

implement a simple LED circuit that does not require a software code.

System OK Indication

Digital output pin to Host, indicating voltage and temperature range are valid.

System and Port

Measurements

Measurements of the following parameters: Current (mA), Power Consumption (W),

Vmain (V), Port Voltage (V), PD Class (0-4).

Detailed Port Status

Port statuses are received from PoE managers. Statuses such as ‘port on’ and ‘port

off due to disconnection or due to overload’

Interrupt Pin

Interrupt out from PoE controller indicating events such as: port on, port off, port

fault, PoE device fault, voltage out of range, and more. For a full list of interrupt

events refer to Serial Communication Protocol, catalogue number 06-0032-056.

Port Power Limit

Configurable port power limit; when a port exceeds the limit, it is automatically

disconnected

Port Matrix Control

Enables layout designers to connect all physical ports to logical ports whenever

required.

‘Power Good’ Interrupt

from Power Supply

Directly to POE Drivers.

For systems comprising more than a single power supply, in case one power supply

fails, a fast port disconnection mechanism is executed to maintain operation and

prevent collapse of other power supplies.

I 2 C ADDR E S S S E L E CT I O N

I

2C interface between Host CPU and a specific PD69000 requires setting the device address; this is done by

applying a specific voltage level to pin #25 (I2C_ADDR) as shown below:

I 2 C _ AD DR

V O L TA G E L EV EL

I 2 C A DD RE S S

( H E X AD E CI M AL )

0.00 to 0.21VDC

UART

0.21 to 0.41VDC

0x4

0.41 to 0.62VDC

0x8

0.62 to 0.83VDC

0xC

0.83 to 1.03VDC

0x10

1.03 to 1.24VDC

0x14

1.24 to 1.44VDC

0x18

1.44 to 1.65VDC

0x1C

1.65 to 1.86VDC

0x20

1.86 to 2.06VDC

0x24

2.06 to 2.27VDC

0x28

2.27 to 2.48VDC

0x2C

2.48 to 2.68VDC

0x30

2.68 to 2.89VDC

0x34

2.89 to 3.09VDC

0x38

3.09 to 3.30VDC

0x3C