USB 2.0 Hi-Speed Hub Controller

Datasheet

Chapter 3 Acronyms

I2C: Inter-Integrated Circuit1

OCS: Over-Current Sense

PCB: Printed Circuit Board

PHY: Physical Layer

PLL: Phase-Locked Loop

QFN: Quad Flat No Leads

RoHS: Restriction of Hazardous Substances Directive

SCL: Serial Clock

SIE: Serial Interface Engine

SMBus: System Management Bus

TT:Transaction Translator

1.I2C is a registered trademark of Philips Corporation.

Revision 1.0 (3-11-09)

10

SMSC USB251x

DATASHEET