USB4640/USB4640i
High-Speed Inter-Chip (HSIC)
USB 2.0 Hub and Flash Media
Controller
PRODUCT FEATURES
General Description
The SMSC USB4640/USB4640i is a Hi-Speed HSIC
USB hub and card reader combo solution with an
upstream port compliant to HSIC 1.0, a supplement to
the USB 2.0 specification. The two downstream ports
are compliant with the USB 2.0 specification.
High Speed Inter-Chip (HSIC) is a digital interconnect
bus that enables the use of USB technology as a low-
power chip-to-chip interconnect at speeds up to 480
Mb/s. The HSIC interface is an industry standard 2-pin
digital interface which uses standard USB software. The
SMSC USB4640/USB4640i provides an ultra fast
interface between an HSIC enabled host and today’s
popular flash media formats. The controller allows
read/write capability to flash media from the following
families:
–
–
–
–
Secure Digital
TM
(SD)
MultiMediaCard
TM
(MMC)
Memory Stick
®
(MS)
xD Picture Card
TM
(xD)
1
Data Brief
Features
Compliance 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
Low-power digital HSIC interface offers a
replacement for onboard host and device connection
for analog USB bus cable
HSIC interface enables printers, mobile PCs, ultra-
mobile PCs, and cell phone products to reduce the
total power budget while taking full advantage of USB
connectivity and compatibility with existing USB
drivers and software
External 1.2 V reference allows upstream and
downstream HSIC links to use the same voltage
reference
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
Hub and flash media reader/writer configuration from
a single source: External I
2
C
®
ROM or external SPI
ROM
The USB4640/USB4640i offers a versatile, cost-
effective, and energy-efficient hub controller with 2
downstream USB 2.0 ports. This combo solution
leverages SMSC’s innovative technology that delivers
industry-leading data throughput in mixed-speed USB
environments. Average sustained transfer rates
exceeding 35 MB/s are possible
2
.
Highlights
Upstream HSIC port and 2 exposed Hi-Speed USB
2.0 downstream ports for external peripheral
expansion
The dedicated flash media reader is internally
attached to a 3rd downstream port of the hub as a
USB Compound Device
— a single or multiplexed flash media reader interface
— Configures internal code using an external I
2
C
EEPROM
— Supports external code using an SPI Flash EEPROM
— Customizable vendor ID, product ID, and language ID if
using an external EEPROM
PortMap
— Flexible port mapping and port disable sequencing
supports multiple platform designs
Up to 9 configurable GPIOs for special functions
The USB4640 supports the commercial temperature
range of 0°C to +70°C
The USB4640i supports the industrial temperature
range of -40°C to +85°C
48-pin QFN lead-free, RoHS compliant package (7x7
mm)
Applications
3G/4G handsets, smartphones, cell phones, and
other mobile devices
Desktop and mobile PCs
Printers
GPS navigation systems
Media players/viewers
Consumer A/V
Set-top boxes
Industrial products
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
1.For xD-Picture Card
TM
support, please obtain a user
license from the xD-Picture Card License Office.
2.Host and media dependent.
SMSC USB4640/USB4640i
PRODUCT PREVIEW
Revision 1.0 (06-09-09)
High-Speed Inter-Chip (HSIC) USB 2.0 Hub and Flash Media Controller
ORDER NUMBERS:
USB4640/USB4640i-HZH for 48-PIN, QFN LEAD-FREE RoHS COMPLIANT PACKAGE
Please contact your local SMSC representative for more information.
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123
Copyright © 2009 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for
construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC
reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications
before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent
rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated
version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not
designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property
damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of
this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered
trademark of Standard Microsystems Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders.
SMSC makes the following part-numbered device available for purchase only by customers who are xD-Picture Card licensees: USB4640/USB4640i.
By purchasing or ordering any of such devices, Buyer represents, warrants, and agrees that Buyer is a duly licensed Licensee under an xD-Picture CardTM License Agreement
with Fuji Photo Film Co., Ltd., Olympus Optical Co., Ltd., and Toshiba Corporation; and that Buyer will maintain in effect such xD-Picture Card license and will give SMSC
reasonable advance notice of any termination or expiration of such xD-Picture Card license, but in no event less than five days advance notice. SMSC may discontinue making
such devices available for purchase by Buyer and/or discontinue further deliveries of such devices if such xD-Picture Card license shall expire, terminate, or cease to be in
force, or if Buyer is or becomes in default of such xD-Picture Card license.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE
OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL
DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON CONTRACT;
TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD
TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Revision 1.0 (06-09-09)
PRODUCT PREVIEW
2
SMSC USB4640/USB4640i
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
