SMSC USB2640i/USB2641i

Revision 2.1 (06-29-09)

PRODUCT PREVIEW

Data Brief

PRODUCT FEATURES

USB2640i/USB2641i

Industrial Temperature USB 2.0

Flash Media Controller and Hub

Combo

General Description

The SMSC USB2640i/USB2641i is a USB 2.0

compliant, Hi-Speed hub for USB port expansion with an

attached mass storage class peripheral controller. The

controller allows read/write capability to popular flash

media from the following families:

The USB2640i/USB2641i is a fully integrated, single

chip solution providing USB expansion and integrated

flash card media reader/writer capability of ultra high

performance operation. Average sustained transfer

Highlights

Hub controller with internally connected ultra fast

flash media reader/writer and 2 exposed downstream

ports for external peripheral expansion

Flash media reader/writer employs multiplexed card

interfaces which are optimized for use with single

card insertion combo sockets

Hardware-controlled data flow architecture for all self-

mapped media

Optional support for external firmware access via SPI

interface

PortMap

— Flexible port mapping and port disable sequencing

supports multiple platform designs

PortSwap

— Programmable USB differential-pair pin locations eases

PCB design by aligning USB signal traces directly to

connectors

PHYBoost

— Programmable USB transceiver drive strength recovers

signal integrity

Features

Compliant with the following flash media card

specifications: SD 2.0 / MMC 4.2 / MS 1.43 / MS-Pro

1.02 / MS-PRO-HG 1.01 / MS-Duo 1.10 / xD 1.2

Supports a single external 3.3 V supply source;

internal regulators provide 1.8 V internal core voltage

for additional bill of materials and power savings

The transaction translator (TT) in the hub supports

operation of Full-Speed and Low-Speed peripherals

9 K RAM | 64 K on-chip ROM

Enhanced EMI rejection and ESD protection

performance

On board 24 MHz crystal driver circuit

Optional external 24 MHz clock input

Up to 9 GPIOs for special functions

8051 8-bit microprocessor

Hub and flash media reader/writer configuration from

ROM

EEPROM

— Supports external code using a SPI Flash EEPROM

— Customizable vendor ID, product ID, language ID

EEPROM update via USB

48-pin QFN lead-free, RoHS compliant package (7x7

mm)

The SMSC USB2640i/USB2641i supports the

industrial temperature range of -40°C to 85°C

Applications

Desktop and mobile PCs

Personal mobile devices

Printers

GPS navigation systems

Media Players/Viewers

Consumer A/V

Set-top boxes

Industrial products

1.Support and capabilities for xD-Picture Card are not

applicable for the USB2641i. Please obtain a user li-

cense from the xD-Picture Card License Office to sup-

port this flash media format.

2.Host and media dependent.