USB5533B datasheet(5/71 Pages) MICROCHIP

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 2012 - 2015 Microchip Technology Inc.

DS00001680C-page 5

USB5533B

1.3

Configurable Features

The USB5533B hub controller provides a default configuration that is sufficient for most applications. When initialized

in the default configuration, the following features may be configured:

• Downstream non-removable ports, where the hub will automatically report as a compound device

• Downstream disabled ports

• Downstream port power control and over-current detection on a ganged or individual basis

• USB signal drive strength

• USB differential pair pin location

The USB5533B hub controllers can alternatively be configured by OTP or as an SMBus slave device. When configured

by an OTP or over SMBus, the following configurable features are provided:

• Support for compound devices on a port-by-port basis

• Selectable over-current sensing and port power control on an individual or ganged basis to match the circuit board

component selection

• Customizable vendor ID, product ID, and device ID

• Configurable delay time for filtering the over-current sense inputs

• Indication of the maximum current that the hub consumes from the USB upstream port

• Indication of the maximum current required for the hub controller

• Custom string descriptors (up to 30 characters): Product, manufacturer, and serial number

USB5533B 数据表(PDF) 5 Page - Microchip Technology