USB5906 datasheet(13/64 Pages) MICROCHIP

13 / 64 page

USB5906

DS00002242E-page 13



2016-2021 Microchip Technology Inc.

Port 4

Power Enable /

Overcurrent

Sense

PRT_CTL4

I/OD12

(PU)

Port 4 Power Enable / Overcurrent Sense.

When the downstream port is enabled, this pin is set as

an input with an internal pull-up resistor applied. The

internal pull-up enables power to the downstream port

while the pin monitors for an active low overcurrent signal

assertion from an external current monitor on USB port 4.

This pin will change to an output and be driven low when

the port is disabled by configuration or by the host con-

trol.

Port 3

Power Enable /

Overcurrent

Sense

PRT_CTL3

I/OD12

(PU)

Port 3 Power Enable / Overcurrent Sense.

When the downstream port is enabled, this pin is set as

an input with an internal pull-up resistor applied. The

internal pull-up enables power to the downstream port

while the pin monitors for an active low overcurrent signal

assertion from an external current monitor on USB port 3.

This pin will change to an output and be driven low when

the port is disabled by configuration or by the host con-

trol.

Port 2

Power Enable /

Overcurrent

Sense

PRT_CTL2

I/OD12

(PU)

Port 2 Power Enable / Overcurrent Sense.

When the downstream port is enabled, this pin is set as

an input with an internal pull-up resistor applied. The

internal pull-up enables power to the downstream port

while the pin monitors for an active low overcurrent signal

assertion from an external current monitor on USB port 2.

This pin will change to an output and be driven low when

the port is disabled by configuration or by the host con-

trol.

Port 1

Power Enable /

Overcurrent

Sense

PRT_CTL1

I/OD12

(PU)

Port 1 Power Enable / Overcurrent Sense.

When the downstream port is enabled, this pin is set as

an input with an internal pull-up resistor applied. The

internal pull-up enables power to the downstream port

while the pin monitors for an active low overcurrent signal

assertion from an external current monitor on USB port 1.

This pin will change to an output and be driven low when

the port is disabled by configuration or by the host con-

trol.

Gang Power

GANG_PWR

GANG_PWR becomes the port control (PRTCTL) pin for

all downstream ports when the hub is configured for

ganged port power control mode. All port power control-

lers should be controlled from this pin when the hub is

configured for ganged port power mode.

TABLE 3-4:

PORT CONTROL PIN DESCRIPTIONS (CONTINUED)

Name

Symbol

Buffer

Type

Description

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