PD69101 datasheet(17/30 Pages) MICROCHIP

17 / 30 page

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Number

Name

Type

Description

LED0

Open-drain I/O

Port status direct LED

indications. For details, see

Table 3-4. This is a high-

voltage, open-drain, active

low (SINK) output pin.

Connection to LED and

VMAIN through a ~18.2

KΩ (~3 mA) resistor is

recommended.

LED1

N/C

Analog I/O

Test pin (for production

use only); keep open (not

connected).

N/C

TRIM

Analog input

Zapping input for IC

production trimming. It

must be connected to

DVDD.

SYNC

Digital I/O

Synchronization open-drain

I/O pin between host and

client.

In 2-pair mode (switch), this

pin should be pulled down

to DGND through a 4.7 KΩ

resistor.

DGND

Digital I/O

Digital ground.

RESET_N

Digital input

Reset input/on-off

command (active low).

MODE 0

Test I/O

Configuration input pins.

Used to set mode of

operation and test mode

at production. Typically

connected to DGND. For

details, see Table 3-3.

MODE 1

Host/Client

Digital input

If connected to DVDD (3.3

VDC): host mode.

If connected to GND: client

mode.

STD_DET/LEGACY

Digital input

User input pin to set the

chip mode of operation.

1: DVDD= IEEE 802.3af-

compliant resistor detection

only.

0: DGND= IEEE 802.3af/at

detection and legacy (non-

standard) line detection.

Note: 0= Connect to DGND and 1= connect to DVDD.

PD69101

Pin Descriptions

and its subsidiaries

Datasheet

DS00004280A-page 17

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