USB2422 Datasheet, PDF (1/47 Pages) SMSC Corporation – 2-Port USB 2.0 Hi-Speed Hub Controller

USB2422
2-Port USB 2.0 Hi-Speed Hub Controller
General Description
The Microchip USB2422 hub is a low-power, single
transaction translator, hub controller IC with two down-
stream 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 resis-
tors 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 volt-
age
• 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 pack-
age
• 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
 2013 - 2015 Microchip Technology Inc.
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