PD69104B1SLASHF datasheet(23/36 Pages) MICROSEMI

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4-Port PoE Manager

Microsemi Proprietary and Confidential. PD69104B1/F Datasheet Revision 2.0

Pin Name

Type

Description

VPORT_NEG3

Analog

I/O

Negative port output

PORT_SENSE3

Analog

input

Sense resistor port input (connected to 0.36 Ω, 1% resistor to QGND with ~6 mΩ

trace for measurements accuracy).

VPORT_NEG2

Analog

I/O

Negative port output

PORT_SENSE2

Analog

input

Sense resistor port input (connected to 0.36 Ω, 1% resistor to QGND with ~6 mΩ

trace for measurements accuracy).

LED 3

Open

drain

output

Port 3 LED indication – active low ('0' = LED on). See

Table 22 (see page 29)

LED 2

Open

drain

output

Port 2 LED indication – active low ('0' = LED on). See

Table 22 (see page 29)

AGND

Power

Analog ground

4 pairs mode

Analog

input

2 state input pin. Select 4 pairs mode:

“0” (GND) - 4 ports of 2 pairs.

“1” (VCC) - 2 ports of 4 pair.

Current_SET

Analog

input

3 state input pin, used for selecting output current and AF/AT mode:

“0” (AGND) – AF mode

“open” (N.C) – Low AT mode 600mA

“1” (V ) – High AT mode 720mA

COMM_MODE

Analog

input

3 state input pin communication. Following options are available:

“0” (AGND) – UART active

“open” (N.C) – E2PROM connected and I2C active if connected.

In this case within 2PROM Register 0x7E (SYS_CFG) bit 5

(i2c_en) should be set to "1".

“1” (V ) – I2C active

ALT A/B

Digital

input

User input pin, used for setting the chip working mode:

GND – ALT B mode = Midspan mode (midsp [1:4] bits =”1”)

DVDD – ALT A mode = Endspan mode (midsp [1:4] bits =”0”)

INT_OUT

Digital

I/O

(open

drain)

In MSCC Extended Auto mode: User input pin. Used for setting the chip legacy

detection mode:

“1” (V ) – IEEE802.3af compliant resistor detection only

“0” (GND) – IEEE802.3 AF / AT Detection and Legacy (non-

standard) line detection

In semi-auto mode: Interrupt out pin. Indicates an interruption event has occurred.

An external 10K pull-up resistor should be connected between this pin and DVDD.

Mode0

Digital

input

Used for IC operational mode selection. See

Table 2 (see page 6)

Mode1

Digital

input

Used for IC operational mode selection. See

Table 2 (see page 6)

PS_PGD0

Digital

input

Power supply power good 0; power budget set pin – for fast power control. See Table

23 (see page 31)

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