USB2422 Datasheet, PDF (1/51 Pages) SMSC Corporation – 2-Port USB 2.0 Hi-Speed Hub Controller

USB2422
2-Port USB 2.0 Hi-Speed Hub Controller
PRODUCT FEATURES
Datasheet
General Description
The SMSC USB2422 hub is a low-power, single transaction
translator, hub controller IC with two downstream ports for
embedded USB solutions. The SMSC hub controller can
attach to an upstream port as a Hi-Speed and Full-Speed
hub or as a Full-Speed only hub. The SMSC 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
 SMSC 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
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
SMSC USB2422
DATASHEET
Revision 1.0 (06-04-13)