Microchip Technology USB2422 General Description Manual

2-Port USB 2.0 Hi-Speed Hub Controller
PRODUCT FEATURES
General Description
The Microchip USB2422 hub is a low-power, single
transaction translator, hub controller IC with two
downstream ports for embedded USB solutions. The hub
controller can attach to an upstream port as a Hi-Speed and
Full-Speed hub or as a Full-Speed only hub. The hub
supports Low-Speed, Full-Speed, and Hi-Speed (when
configured as a Hi-Speed hub) downstream devices on the
enabled downstream ports.
All required resistors on the USB ports are integrated into
the hub. This includes all series termination resistors on D+
and D- pins and all required pull-down and pull-up resistors
on D+ and D- pins. The over-current sense inputs for the
downstream facing ports have internal pull-up resistors.
Features
Supports the USB Battery Charging Specification,

Revision 1.1
Fully integrated USB termination and pull-up/pull-

down resistors
Supports a single external 3.3 V supply source;

internal regulators provide 1.2 V internal core voltage
On-chip driver for 24 MHz crystal resonator or

external 24 MHz clock input
ESD protection up to 6 kV on all USB pins

Supports self-powered operation

The hub contains a built-in default configuration; no

external configuration options or components are
required
Downstream ports as non-removable ports

Downstream port power control and over-current

detection on an individual or ganged basis
Supports compound devices on a port-by-port basis

24-pin SQFN (4x4 mm), RoHS-compliant package

Commercial temperature range support:

0ºC to +70ºC
Industrial temperature range support:

-40ºC to +85ºC
 2014 Microchip Technology Inc.
USB2422
Highlights
High performance, low-power, small footprint hub

controller IC with two downstream ports
Fully compliant with the USB 2.0 Specification

Optimized for minimal bill-of-materials and low-cost

designs
Applications
LCD monitors and TVs

Multi-function USB peripherals

PC motherboards

Set-top boxes, DVD players, DVR/PVR

Printers and scanners

PC media drive bay

Portable hub boxes

Mobile PC docking

Embedded systems

Gaming consoles

Cable/DSL modems

HDD enclosures

KVM switches

Server front panels

Point-of-Sale (POS) systems

IP telephony

Automobile/home audio systems

Thin client terminals

Datasheet
DS00001726A-page 1