SMSC USB224x Revision 2.1 (02-07-13)
PRODUCT PREVIEW
Data Brief
PRODUCT FEATURES
USB224x
Ultra Fast USB 2.0 Multi-Format, SD/MMC,
and MS Flash Media Controllers
General Description
The SMSC USB224x is a USB 2.0 compliant, Hi-Speed
bulk only1 mass storage class peripheral controller intended
for reading and writing to popular flash media from the xD-
Picture CardTM (xD)2, Memory Stick® (MS), Secure Digital
(SD), and MultiMediaCardTM (MMC) families.
The SMSC USB224x is a fully integrated, single chip
solution capable of ultra high performance operation.
Average sustained transfer rates exceeding 35 MB/s are
possible if the media and host can support those rates. The
USB2244/44i includes provisions to read/write secure
media formats.
General Features
Low pin count 36-pin QFN (6x6 mm) lead-free RoHS
compliant package
USB2240/40i/41/41i
— Targeted for applications in which single or "combo"
media sockets are used
Hardware-controlled data flow architecture for all self-
mapped media
Pipelined hardware support for access to non-self-
mapped media
Order number with “i” denote the products that support
the industrial temperature range of -40ºC to 85ºC
Support included for secure media format on a licensed,
customized basis
— USB2244/44i: SD Secure
— USB2242/42i: Sony MagicGateTM
Hardware Features
Single chip flash media controller with
— USB2240/40i/41/4i: multiplexed interface for use with
“combo” card sockets
— USB2242/42i: MS flash media reader/writer
— USB2244/44i: SD/MMC flash media reader/writer
SDIO and MMC Streaming Mode support
Extended configuration options
— xD player mode operation
— Socket switch polarities, etc.
Media Activity LED
GPIO configuration and polarity
— Up to 8 GPIOs for special function use
— One GPIO with up to 200 mA drive
On board 24 MHz crystal driver circuit
Optional external 24 MHz clock input3
Internal card power FET
— 200 mA
— "Fold-back" short circuit protection
8051 8-bit microprocessor
— 60 MHz - single cycle execution
— 64 KB ROM | 14 KB RAM
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
Optimized pinout improves signal routing which eases
implementation for improved signal integrity
Flash Media Specification Compliance
Secure Digital 2.0
— HS-SD, SDHC
— TransFlashTM and reduced form factor media
MultiMediaCard 4.2
— 1/4/8-bit MMC
Memory Stick Formats
— MS 1.43, Pro 1.02, Duo 1.10
— Pro-HG Duo 1.01
– MS, MS Duo, HS-MS, MS Pro-HG, MS Pro
xD-Picture Card 1.2
Software Features
Customizable vendor specific data
Optimized for low latency interrupt handling
Reduced memory footprint
Applications
Flash media card reader/writers
Desktop and mobile PCs
Printers
Consumer A/V and media players/viewers
Compatible with
–Microsoft
® VistaTM and Vista ReadyBoostTM
–Windows
® XP, ME, 2K SP4
– Apple Mac OSx®
– Linux Mass Storage Class Drivers
1.Bulk only is not applicable to USB2240/40i/41/41i.
2.xD-Picture Card is not applicable to USB2241/41i. 3.Only applicable to USB2240/40i/41/41i.
Order Numbers:
“XX” in the order number indicates the internal ROM firmware revision level.
Please contact your SMSC sales representative for more information.
This product meets the halogen maximum concentration values per IEC61249-2-21
For RoHS compliance and environmental information, please visit www.smsc.com/rohs
ORDER NUMBERS
LEAD-FREE
ROHS
COMPLIANT
PACKAGE
TYPE / SIZE SD/MMC xD
MS/
MS PRO/
MS PRO-HG
OPERATING
TEMPERATURE
USB2240-AEZG-XX
36 QFN
6 x 6 x 0.5 mm
0ºC to 70ºC
USB2240i-AEZG-XX -40ºC to 85ºC
USB2241-AEZG-XX 0ºC to 70ºC
USB2241i-AEZG-XX -40ºC to 85ºC
USB2242-AEZG-XX 0ºC to 70ºC
USB2242i-AEZG-XX -40ºC to 85ºC
USB2244-AEZG-XX 0ºC to 70ºC
USB2244i-AEZG-XX -40ºC to 85ºC
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
Revision 2.1 (02-07-13) 2 SMSC USB224x
PRODUCT PREVIEW
Copyright © 2013 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
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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
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Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
SMSC USB224x 3 Revision 2.1 (02-07-13)
PRODUCT PREVIEW
Overview
The SMSC USB224x is a flash media card reader solution fully compliant with the USB 2.0
specification. All required resistors on the USB ports are integrated into the device. This includes all
series termination resistors on D+ and D– pins and all required pull-down and pull-up resistors. The
over-current sense inputs for the downstream facing ports have internal pull-up resistors.
Hardware Features
Single chip flash media controller in low pin count 36-pin QFN, lead-free RoHS compliant package
Commercial temperature products support 0°C to +70°C: USB2240/41, USB2242 and USB2244
Industrial temperature products support -40°C to +85°C: USB2240i/41i, USB2242i and USB2244i
Up to 8 GPIOs
— Configuration and polarity for special function use such as LED indicators, button inputs, and
power control to memory devices
— The number of actual GPIOs depends on the implementation configuration used
One GPIO available with up to 200 mA drive and “fold-back” short circuit protection
8051 8-bit microprocessor
— 60 MHz - single cycle execution
— 64 KB ROM |14 KB RAM
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
Compliance with the following flash media card specifications:
Secure Digital 2.0
— HS-SD and SDHC
— TransFlash™ and reduced form factor media
MultiMediaCard 4.2
— 1/4/8 bit MMC
Memory Stick 1.43
Memory Stick Pro Format 1.02
Memory Stick Pro-HG Duo Format 1.01
— Memory Stick, MS Duo, HS-MS, MS Pro-HG, MS Pro
Memory Stick Duo 1.10
xD-Picture Card 1.2
Software Features
If the OEM is using an external EEPROM, the following features are available:
— Customizable vendor, product, language, and device ID’s
— 12-hex digits maximum for the serial number string
— 28-character manufacturer ID and product strings for the flash media reader/writer
— LED blink interval or duration
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
Revision 2.1 (02-07-13) 4 SMSC USB224x
PRODUCT PREVIEW
Block Diagrams
Figure 1 USB2240/40i/41/41i Block Diagram
FMDU
CTL
8051
PROCESSOR
SFR
RAM
MS
RAM
USB
Host
AUTO_CBW
PROC
PHY
FMI
XDATA BRIDGE
+ BUS ARBITER
BUS
INTFC
BUS
INTFC
BUS
INTFC
EP0 TX
EP0 RX
EP2 TX
EP2 RX
EP1 RX
EP1 TX
ROM
64 KB
RAM
10 KB ADDR
MAP
PWR_FET1
8 pins
GPIO10 / CRD_PWR
Clock
Generation and
Control
SD/
MMC
4K
total
GPIOs
Program Memory I/O Bus
3.3 V
1.8 V Reg
VDD18
3.3 V
VDD18PLL
PLL
24 MHz
Crystal
SIE
CTL
1.8 V Reg
USB2240 / 40i
USB2241 / 41i*
xD*
Multiplexed
Interface
NOTE: xD-Picture Card is not applicable to USB2241/41i.
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
SMSC USB224x 5 Revision 2.1 (02-07-13)
PRODUCT PREVIEW
Figure 2 USB2242/42i Block Diagram
FMDU
CTL
8051
PROCESSOR
SFR
RAM
MS
RAM
USB
Host
AUTO_CBW
PROC
PHY
FMI
XDATA BRIDGE
+ BUS ARBITER
BUS
INTFC
BUS
INTFC
BUS
INTFC
EP0 TX
EP0 RX
EP2 TX
EP2 RX
EP1 RX
EP1 TX
ROM
64 KB
RAM
10 KB ADDR
MAP
PWR_FET1
7 pins
GPIO10 / CRD_PWR
Clock
Generation and
Control
4K
total
GPIOs
Program Memory I/O Bus
3.3 V
1.8 V Reg
VDD18
3.3 V
VDD18PLL
PLL
24 MHz
Crystal
SIE
CTL
1.8 V Reg
USB2242 / USB2242i
Media
Interface
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
Revision 2.1 (02-07-13) 6 SMSC USB224x
PRODUCT PREVIEW
Figure 3 USB2244/44i Block Diagram
FMDU
CTL
8051
PROCESSOR
SFR
RAM
SD/
MMC
RAM
USB
Host
AUTO_CBW
PROC
PHY
FMI
XDATA BRIDGE
+ BUS ARBITER
BUS
INTFC
BUS
INTFC
BUS
INTFC
EP0 TX
EP0 RX
EP2 TX
EP2 RX
EP1 RX
EP1 TX
ROM
64 KB
RAM
10 KB ADDR
MAP
PWR_FET1
7 pins
GPIO10 / CRD_PWR
Clock
Generation and
Control
4K
total
GPIOs
Program Memory I/O Bus
3.3 V
1.8 V Reg
VDD18
3.3 V
VDD18PLL
PLL
24 MHz
Crystal
SIE
CTL
1.8 V Reg
USB2244 / USB2244i
Media
Interface
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
SMSC USB224x 7 Revision 2.1 (02-07-13)
PRODUCT PREVIEW
Package Outline
Figure 4 USB224x 36-QFN, 6x6 mm Body, 0.5 mm Pitch
Note 1 All dimensions are in millimeters.
Note 2 Position tolerance of each terminal and exposed pad is ±0.05 mm at maximum material
condition.
Table 1 Package Parameters
SYMBOL MIN NOMINAL MAX NOTE REMARKS
A 0.80 ~ 1.00 - Overall Package Height
A1 0 0.02 0.05 - Standoff
A2 0.60 ~ 0.80 - Mold Thickness
A3 0.20 REF - Leadframe Thickness
D/E 5.85 6.00 6.15 - X/Y Overall Body Size
D1/E1 5.55 ~ 5.95 - X/Y Mold Cap Size
D2/E2 4.00 4.10 4.20 2 X/Y Exposed Pad Size
L 0.50 0.60 0.75 - Terminal Length
b 0.18 0.25 0.30 2 Terminal Width
e 0.50 BSC - Terminal Pitch
Ultra Fast USB 2.0 Multi-Format, SD/MMC, and MS Flash Media Controllers
Revision 2.1 (02-07-13) 8 SMSC USB224x
PRODUCT PREVIEW
Note 3 Dimension “b” applies to plated terminals and is measured between 0.15 mm and 0.30 mm
from the terminal tip.
Note 4 Details of terminal #1 identifier are optional but must be located within the area indicated.
Note 5 Coplanarity zone applies to exposed pad and terminals.
Figure 5 Additional Package Information and Notes
