USB2533 datasheet(16/50 Pages) MICROCHIP

16 / 50 page

USB 2.0 Hi-Speed 3-Port Hub Controller

Datasheet

DS00001702A-page 16

 2014 Microchip Technology Inc.

Remote

Wakeup

Indicator

SUSP_IND

OD8

Configurable sideband signal used to indicate

Suspend status (default) or Remote Wakeup

events to the Host.

Suspend Indicator (default configuration):

0 = Unconfigured, or configured and in USB

suspend mode

1 = Device is configured and is active

(i.e., not in suspend)

For Remote Wakeup Indicator mode:

Refer to Section 8.5, "Remote Wakeup Indicator

(SUSP_IND)," on page 37.

Refer to Section 6.3.1, "Non-Removable Device

(NON_REM[1:0])," on page 29 for information on

LED polarity when using this signal.

Local Power

Detect

LOCAL_PWR

Detects the availability of a local self-power

source.

0 = Self/local power source is NOT available.

(i.e., device must obtain all power from upstream

USB VBUS)

1 = Self/local power source is available

See Note 3.2 for more information on this pin.

Non-

Removable

Device 0

Configuration

Strap

NON_REM0

(Note 3.3)

This strap is used in conjunction with

NON_REM1 to configure the downstream ports

as non-removable devices. Refer to Section

6.3.1, "Non-Removable Device

(NON_REM[1:0])," on page 29 for additional

information.

See Note 3.4 for more information on

configuration straps.

High Speed

Indicator

HS_IND

Indicates a high speed connection on the

upstream port. The active state of the LED will be

determined as follows:

If CFG_SEL1 = 0, HS_IND is active high.

If CFG_SEL1 = 1, HS_IND is active low.

Asserted = hub is connected at high speed

Negated = Hub is connected at full speed

Configuration

Select 1

Configuration

Strap

CFG_SEL1

This strap is used in conjunction with CFG_SEL0

to set the hub configuration method. Refer to

Section 6.3.2, "Configuration Select

(CFG_SEL[1:0])," on page 29 for additional

information.

See Note 3.4 for more information on

configuration straps.

Table 3.1 Pin Descriptions (continued)

NUM PINS

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

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