USB3503 datasheet(9/82 Pages) SMSC

9 / 82 page

USB 2.0 HSIC High-Speed Hub Controller Optimized for Portable Applications

Datasheet

SMSC USB3503A

Revision 1.1 (02-07-13)

DATASHEET

1.1

Customer Selectable Features

A default configuration is available in the USB3503 following a reset. This configuration may be

sufficient for most applications. The USB3503 hub may also be configured by an external

microcontroller. When using the microcontroller interface, the hub appears as an I2C slave device.

The USB3503 hub supports customer selectable features including:



Optional customer configuration via I2C.



Supports compound devices on a port-by-port basis.



Customizable vendor ID, product ID, and device ID.



Configurable downstream port power-on time reported to the host.



Supports indication of the maximum current that the hub consumes from the USB upstream port.



Supports Indication of the maximum current required for the hub controller.



Configurable as a either a Self-Powered or Bus-Powered Hub



Supports custom string descriptors (up to 30 characters):

— Product string

— Manufacturer string

— Serial number string



When available, I2C configurable options for default configuration may include:

— Downstream ports as non-removable ports

— Downstream ports as disabled ports

— USB signal drive strength

— USB receiver sensitivity

— USB differential pair pin location

USB3503 Datasheet(PDF) 9 Page - SMSC Corporation