4-Port PoE Manager

Microsemi Proprietary and Confidential. PD69104B1/F Datasheet Revision 2.0

21

Pin

Pin Name

Pin

Type

Description

40

PS_PGD1

Digital

input

Power supply power good 1; power budget set pin – for fast power control. See Table

.

23 (see page 31)

41

PS_PGD2

Digital

input

Power supply power good 2; power budget set pin – for fast power control. See Table

.

23 (see page 31)

42

PS_PGD3 /

E2_SCL

Digital

I/O

(open

drain)

Power supply power good 3;

Power budget set pin—for initial configuration (See Table 7)

Or (refer to COMM MODE PIN)

E2_SCL: I2C Clock Out to EEPROM

When working with EPROM—an external 10K pull-up resistor should be connected

between this pin and DVDD.

43

E2_SDA

Digital

I/O

(open

drain)

EEPROM I2C data I/O pin. Used for power-up configuration in stand alone systems.

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

44

DVDD

Power

Digital 3.3 V power input

DC

45

DGND

Power

Digital GND

46

I2C_SCL

Digital

input

I²C bus, serial clock input.

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

47

I2C_SDA_out

Digital I

/O

(open

drain)

I²C bus, data output/UART Tx output

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

48

I2C_SDA_in

Digital I

/O

(open

drain)

I²C bus, data input/UART Rx input

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

1

This pin should be free of large capacitance in order to prevent RPD and MRPD pulses distortion (please

refer to the MSCC PD69104B Application Note).

Note: “0”= connect to DGND and “1”= connect to DVDD.