USB2533 datasheet(12/61 Pages) SMSC

12 / 61 page

USB 2.0 Hi-Speed 3-Port Hub Controller

Datasheet

Revision 1.0 (06-17-13)

SMSC USB2533

DATASHEET

Downstream

USB D-

(Swap Port 1)

SWAP_USBDN1_DM

AIO

Downstream USB Port 1 D- data signal.

Note:

The downstream Port 1 signals can be

optionally swapped with the upstream

Port 0 signals.

Port 1 D-

Disable

Configuration

Strap

PRT_DIS_M1

This strap is used in conjunction with

PRT_DIS_P1 to disable USB Port 1.

0 = Port 1 D- Enabled

1 = Port 1 D- Disabled

Note:

Both PRT_DIS_P1 and PRT_DIS_M1

must be tied to VDD33 at reset to

disable the associated port.

See Note 3.4 for more information on

configuration straps.

Downstream

USB D+

(Port 2)

USBDN2_DP

AIO

Downstream USB Port 2 D+ data signal.

Port 2 D+

Disable

Configuration

Strap

PRT_DIS_P2

This strap is used in conjunction with

PRT_DIS_M2 to disable USB Port 2.

0 = Port 2 D+ Enabled

1 = Port 2 D+ Disabled

Note:

Both PRT_DIS_P2 and PRT_DIS_M2

must be tied to VDD33 at reset to

disable the associated port.

See Note 3.4 for more information on

configuration straps.

Downstream

USB D-

(Port 2)

USBDN2_DM

AIO

Downstream USB Port 2 D- data signal.

Port 2 D-

Disable

Configuration

Strap

PRT_DIS_M2

This strap is used in conjunction with

PRT_DIS_P2 to disable USB Port 2.

0 = Port 2 D- Enabled

1 = Port 2 D- Disabled

Note:

Both PRT_DIS_P2 and PRT_DIS_M2

must be tied to VDD33 at reset to

disable the associated port.

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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