SMSC USB2244, USB2244i User Manual

USB2244/USB2244I

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

PRODUCT FEATURES

General Description

The SMSC USB2244/USB2244i is a USB 2.0 compliant, high speed Bulk Only Mass Storage Class Peripheral Controller intended for reading and writing to SD/MMC Flash Media Cards.

The SMSC USB2244/USB2244i is a fully integrated, single chip solution capable of ultra high performance operation. Average sustained transfer rates exceeding 35MB/s are possible if the media and host can support those rates. Provisions to read/write secure media formats is also provided.

General Features

 36-pin QFN (6x6mm) lead-free RoHS compliant package  Hardware-controlled data flow architecture for all self-

mapped media

 Pipelined hardware support for access to non-self-

mapped media

 Product name with “i” denotes the version that supports

the industrial temperature range of -40ºC to 85ºC

 Support included for secure media format on a licensed,

customized basis —SD Secure

Hardware Features

 Sin gle Chip Flash Media Reader/Writer

— Secure Digital 2.0

– HS-SD, HC-SD, TransFlash™ and reduced form factor

media

— MultiMediaCard Specification 4.2

– 1/4/8 bit MMC

 SDIO and MMC Streaming Mode support  Extended configuration op tions

— Socket switch polarities, etc.

 Media Activity LED  GPIO configura tion and polarity

— Up to 8 GPIOs for special function use: LED indicators,

power control to memory devices, etc. The number of actual GPIO’s depends on the implementation configuration used.

— One GPIO with up to 200 mA drive

 On Board 24MHz Crystal Driver Circuit  Internal Card Power FET

— 200mA — "Fold-back" short circuit current protected

 8051 8-bit microprocessor

— 60MHz - single cycle execution — 64KB ROM; 14KB RAM

 Inter nal Regulator for 1.8V core operation  Optimized pinout improves signal routing, easing

implementation and allowing for improved signal integrity

Datasheet

Mask Programmable Features

 VID/PID/Language ID  28-character Manufacturer ID and Product string  12-hex digit (max) Serial Number string  Customizable Vendor specific data LED blink interval or

duration

Software Features

 Optimized for low latency interrupt handling  Reduced memory footprint  Please see the USB2244/USB2244i Software Release

Notes for additional Software Features.

Applications

 Flash Media Card Reader/Writer  Printers  Desktop and Mobile PCs  Consumer A/V  Media Players/Viewers  Vista ReadyBo ost

 Compatible with Microsoft Vista, Windows XP, Windows

ME, Windows 2K SP4, Apple OSx, and Linux Mass Storage Class Drivers

SMSC USB2244/USB2244i DATASHEET Revision 1.0 (05-27-08)

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

ORDER NUMBER:

USB2244/USB2244i-AEZG-XX for 36 pin, QFN Lead-Free RoHS Compliant Package

“XX” in the order number indicates the internal ROM firmware revision level.

Please contact your SMSC sales representative for more information.

Datasheet

80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123

Copyright © 2008 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC produ cts are included as a means of illustrating typical applications. Consequently, complete

information sufficient for construction purposes is not n ecessarily 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 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.

SMSC USB2244/USB2244i 2 Revision 1.0 (05-27-08)

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

Table of Contents

Chapter 1 Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 3 Pin Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1 36-Pin Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 4 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Chapter 5 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.1 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.2 Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Chapter 6 Pin Reset State Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

6.1 36-Pin Reset States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Chapter 7 DC Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.1 Maximum Guaranteed Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.2 Recommended Operating Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7.3 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7.4 Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Chapter 8 AC Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.1 Oscillator/Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Chapter 9 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Chapter 10 GPIO Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

SMSC USB2244/USB2244i 3 Revision 1.0 (05-27-08)

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

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List of Figures

Figure 2.1 USB2244/USB2244i Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4.1 USB2244/USB2244i 36 Pin QFN Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6.1 Pin Reset States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 6.2 Legend for Pin Reset States Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 7.1 Supply Rise Time Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 8.1 Typical Crystal Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 8.2 Formula to Find Value of C1 and C2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 9.1 USB2244/USB2244i 36-QFN, 6x6mm Body , 0.5 m m Pitch . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

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List of Tables

Table 3.1 USB2244/2244i 36-Pin QFN Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 5.2 USB2244/2244i 36-Pin QFN Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 5.3 USB2244/USB2244i Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 6.1 USB2244/USB2244i Pin Reset States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 7.1 Pin Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 10.1 USB2244/USB2244i GPIO Usage (ROM Rev 0x00). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

SMSC USB2244/USB2244i 5 Revision 1.0 (05-27-08)

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Chapter 1 Acronyms

MMC: MultiMediaCard PLL: Phase-Locked Loop

QFN: Quad Flat no Leads RoHS: Restriction of Hazardous Substances Directive SD: Secure Digital SDIO: Secure Digital Input/Output SDC: Secure Digital Controllerl SIE: Serial Interface Engine

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

*Note: In order to develop, make, use, or sell readers and/or other products using or incorporating any of the SMSC devices made the subject of this document or to use related SMSC software programs, technical information and licenses under patent and other intellectual property rights from or through various persons or entities, including without limitation media standard companies, forums, and associations, and other patent holders may be required. These media standard companies, forums, and associations include without limitation the following: Sony Corporation (Memory Stick, Memory Stick Pro); SD3 LLC (Secure Digital); MultiMedia Card Association (MultiMediaCard); the SSFDC Forum (SmartMedia); the Compact Flash Association (Compact Flash); and Fuji Photo Film Co., Ltd., Olympus Optical Co., Ltd., and Toshiba Corporation (xD-Picture Card). SMSC does not make such licenses or technical information available; does not promise or represent that any such licenses or technical information will actually be obtainable from or through the various persons or entities (including the media standard companies, forums, and associations), or with respect to the terms under which they may be made available; and is not responsible for the accuracy or sufficiency of, or otherwise with respect to, any such technical information. SMSC's obligations (if any) under the Terms of Sale Agreement, or any other agreement with any customer, or otherwise, with respect to infringement, including without limitation any obligations to defend or settle claims, to reimburse for costs, or to pay damages, shall not apply to any of the devices made the subject of this document or any software programs related to any of such devices, or to any combinations involving any of them, with respect to infringement or claimed infringement of any existing or future patents related to solid state disk or other flash memory technology or applications ("Solid State Disk Patents"). By making any purchase of any of the devices made the subject of this document, the customer represents, warrants, and agrees that it has obtained all necessary licenses under then-existing Solid State Disk Patents for the manufacture, use and sale of solid state disk and other flash memory products and that the customer will timely obtain at no cost or expense to SMSC all necessary licenses under Solid State Disk Patents; that the manufacture and testing by or for SMSC of the units of any of the devices made the subject of this document which may be sold to the customer, and any sale by SMSC of such units to the customer, are valid exercises of the customer's rights and licenses under such Solid State Disk Patents; that SMSC shall have no obligation for royalties or otherwise under any Solid State Disk Patents by reason of any such manufacture, use, or sale of such units; and that SMSC shall have no obligation for any costs or expenses related to the customer's obtaining or having obtained rights or licenses under any Solid State Disk Patents.

SMSC MAKES NO WARRANTIES, EXPRESS, IMPLIED, OR STATUTORY, IN REGARD TO INFRINGEMENT OR OTHER VIOLATION OF INTELLECTUAL PROPERTY RIGHTS. SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES AGAINST INFRINGEMENT AND THE LIKE.

No license is granted by SMSC expressly, by implication, by estoppel or otherwise, under any patent, trademark, copyright, mask work right, trade secret, or other intellectual property right.

**To obtain this software program the appropriate SMSC Software License Agreement must be executed and in effect. Forms of these Software License Agreements may be obtained by contacting SMSC.

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

Chapter 2 Block Diagram

AUTO_

CBW

PROC

USB Host

PHY

1.8V Reg

PLL

SIE

CTL

BUS

INTFC

XDATA BRIDGE + BUS ARBITER

BUS

INTFC

BUS

INTFC

FMDU

CTL

EP0 TX EP0 RX

EP1 RX EP1 TX EP2 RX EP2 TX

RAM

FMI

SD/

MMC

total

PWR_FET1

GPIOs

Media

Interface

GPIO10(CARD_PWR)

7 pins

RAM

Clock

Generation and

Control

10KB

ROM 64KB

ADDR

MAP

Program

Memory

I/O Bus

PROCESSOR

8051

SFR

RAM

Figure 2.1 USB2 244/USB2244i Block Diagram

SMSC USB2244/USB2244i 7 Revision 1.0 (05-27-08)

DATASHEET

Chapter 3 Pin Table

3.1 36-Pin Package

Table 3.1 USB224 4/2244i 36-Pin QFN Package

SD_D0 SD_D1 SD_D2 SD_D3

SD_D4 SD_D5 SD_D6 SD_D7

SD_CLK SD_CMD SD_WP GPIO15 (SD_nCD)

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

SD/MMC INTERFACE (12 Pins)

USB INTERFACE (7 PINS)

USB+ USB- RBIAS

XTAL1 (CLKIN) XTAL2 VDDA33 VDD18PLL

MISC (13 PINS)

GPIO1 (LED1) GPIO2 / RXD / SDA GPIO4 GPIO7 / TXD / SCK

GPIO10 (CRD_PWR) GPIO12 GPIO14 (4) NC

TEST nRESET

DIGITAL, POWER (4 PINS)

(3)VDD33 VDD18

TO TA L 3 6

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

Chapter 4 Pin Configuration

TEST

GPIO4

SD_WP

GPIO7 / TXD / SCK

XTAL2

XTAL1 (CLKIN)

VDD18PLL

RBIAS

VDDA33

GPIO15 (SD_nCD)24SD_D223GPIO12

GPIO2 / RXD / SDA

28 29 30 31 32 33

(Top View QFN-36)

SMSC

USB2244/2244i

34 35

Thermal Slug

(must be connected to VSS)

USB-

USB+

SD_D1

GPIO1 (LED1)

SD_D3

VDD3321GPIO10 (CRD_PWR)

VDD33

SD_D0

SD_D4

SD_D7

SD_D6

GPIO14

18 17 16 15 14 13 12 11 10

SD_CLK

nRESET NC NC NC VDD33

VDD18

SD_CMD

SD_D5

Indicates pins on the bottom of the device.

Figure 4.1 USB22 44/USB2244i 36 Pin QFN Diagram

SMSC USB2244/USB2244i 9 Revision 1.0 (05-27-08)

DATASHEET

Chapter 5 Pin Descriptions

This section provides a detailed description of each signal. The signals are arranged in functional groups according to their associated interface.

The “n” symbol in the signal name indicates that the active, or asserted, state occurs when the signal is at a low voltage level. When “n” is not present before the signal name, the signal is asserted at the high voltage level.

The terms assertion and negation are used exclusively. This is done to avoid confusion when worki ng with a mixture of “active low” and “active high” signals. The term assert, or assertion, indi cates that a signal is active, independent of whether that level is represented by a high or low voltage. The term negate, or negation, indicates that a signal is ina ctive.

5.1 Pin Descriptions

Table 5.2 USB2244/2244i 36-Pin QFN Pin Descriptions

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

36-PIN

NAME SYMBOL

SD Data SD_D[7:0] 7

SD Clock SD_CLK 9 O12 This is an output clock signal to SD/MMC

SD Command SD_CMD 11 I/O12PU This is a bi-directional signal that connects to

SD Write Protect SD_nWP 30 I/O12 This pin is designated as the Secure Digital

SD Card Detect GPIO

GPIO15 (SD_nCD)

QFN

SECURE DIGITAL INTERFACE

8 10 20 23 25

26 I/O12 This is a GPIO designated as the Secure

BUFFER

TYPE DESCRIPTION

I/O12PU The bi-directional signals should have weak

pull-up resistors. The register can be controlled by: SD_MMC_INTF_EN bit of SDC_MODE_CTL

device. The clock frequency is software configurable.

the CMD signal of SD/MMC device. The bidirectional signal should have an internal weak pull-up resistor.

The pull-up register can be controlled by: SD_MMC_INTF_EN bit of SDC_MODE CTL

card mechanical write detect pin.

Digital card detection pin.

USB INTERFACE

USB Bus Data USB+

USB Transceiver Bias

Revision 1.0 (05-27-08) 10 SMSC USB2244/USB2244i

USBRBIAS 35 I-R A 12.0k , 1.0% resistor is attached from VSSA

I/O-U These pins connect to th e USB bus data

signals.

to this pin in order to set the transceiver's internal bias currents.

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

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Table 5.2 USB2244/2244i 36-Pin QFN Pin Descriptions (continued)

NAME SYMBOL

24MHz Crystal or external clock input

XTA L1 (CLKIN)

36-PIN

QFN

33 ICLKx This pin can be connected to one terminal of

BUFFER

TYPE DESCRIPTION

the crystal or it can be connected to an external 24 clock when a crystal is not used.

24MHz Crystal XTAL2 32 OCLKx This is the other terminal of the crystal, or it can

be left open when an external clock source is used to drive XTAL1(CLKIN). It may not be used to drive any external circuitry other than the crystal circuit.

3.3V Analog

VDDA33 36 3.3V Analog Power

Power

1.8V PLL Power VDD1 8PLL 34 This pin is the 1.8V Power for the PLL. +1.8V Filtered analog power for internal PLL.

This pin must have a 1.0μF(or greater) ±20% (ESR <0.1Ω) capacitor to VSS.

MISC

General Purpose I/O

GPIO1 (LED1) 1 I/O12 This pin may be used either as input, edge

sensitive interrupt input, or output. In addition, as an output, the GPIO1 can use

output controlled by the LED1_GPIO1 register.

General Purpose I/O

GPIO2 / RXD / SDA

27 I/O12 GPIO: This pin may be used either as input,

edge sensitive interrupt input, or output.

I RXD: In addition to the above, the signal can

be used as input to the RXD of UART in the device, when the TXD_RXD_SEL bit in UTIL_CONFIG1 register is cleared to "0".

I/O12 SDA: This is the data pin when used with an

external serial EEPROM.

General Purpose I/O

GPIO4 29 I/O12 This pin may be used either as input, edge

sensitive interrupt input, or output.

GPIO7 / TXD /

31 I/O12 GPIO: This pin may be used either as input,

edge sensitive interrupt input, or output.

SCK

O12 TXD: In addition, as an output, the GPIO7 can

be used as an output TXD of UART in the device, when the GPIO2/TXD bit in UTL_CONFIG register is set to "1"

O12 SCK: This is the clock output when used with

an external EEPROM.

General Purpose I/O

GPIO10 (CRD_PWR)

21 I/O200 GPIO: This pin may be used either as input,

edge sensitive interrupt input, or output. CRD_PWR: Card Power drive of 3.3V @ either

100mA or 200mA.

General Purpose I/O

GPIO14 19 I/O12 This pin may be used either as input, edge

sensitive interrupt input, or output.

RESET Input nRESET 18 IS This active low signal is used by the system to

reset the chip. The active low pulse should be at least 1μs wide.

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Table 5.2 USB2244/2244i 36-Pin QFN Pin Descriptions (continued)

Datasheet

NAME SYMBOL

TEST Input TEST 28 I This signal is used for testing the chip. User

No Connects NC No Connect. No trace or signal should be

+1.8V Core power

3.3V Power &

Regulator Input.

Ground VSS SLUG Ground Reference

VDD18 13 All VDD18 pins must be connected together on

VDD33 6

36-PIN

QFN

14 22

BUFFER

TYPE DESCRIPTION

should normally tie this pin low externally if the test function is not used.

routed/attached to these pins.

DIGITAL / POWER

the circuit board. +1.8V core power. This pin must have a 1.0μF

(or greater) ±20% (ESR <0.1Ω) capacitor to VSS.

3.3V Power & Regulator Input.

5.2 Buffer Type Descriptions

Table 5.3 USB2244/USB22 44i Buffer Type Descriptions

BUFFER DESCRIPTION

I Input. IS Input with Schmitt trigger. I/O12 Input/Output buffer with 12mA sink and 12mA source. I/O200 Input/Output buffer 12mA with FET disabled, 100/200mA source only when the FET is

I/O12PU Input/Output buffer with 12mA sink and 12mA source with a pull-up resistor. O12 Output buffer with 12mA source. ICLKx XTAL clock input. OCLKx XTAL clock output. I/O-U Analog Input/Output Defined in USB specification. I-R RBIAS.

enabled.

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

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Chapter 6 Pin Reset State Table

Voltage

Signal (v)

DD33

Hardware

Initialization

RESET

Firmware

Operational

Figure 6.1 Pin Reset States

LEGEND

yes hardware enables function

-- hardware disables function z hardware disables output driver

pu hardware enables pullup pd hardware enables pulldown hw hardware controls function, but state is protocol dependent

(fw) firmware controls function through registers VDD hardware supplies power through pin, applicable only to CARD_PWR pins none hardware disables pad

RESET

Time

(t)

Figure 6.2 Legend for Pin Reset States Table

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6.1 36-Pin Reset States

Table 6.1 USB2244/USB2244i Pin Reset States

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

RESET STATE

PIN PIN NAME FUNCTION

8 SD_D6 none z -- -- SD_D6 hw pu yes 7 SD_D7 none z -- -- SD_D7 hw pu yes 5 SD_D0 none z -- -- SD_D0 hw pu yes

4 SD_D1 none z -- -- SD_D1 hw pu yes 30 SD_WP SD_WP 0 -- -- SD_WP (fw) (fw) (fw) 25 SD_D2 none z -- -- SD_D2 hw pu yes 23 SD_D3 none z -- -- SD_D3 hw pu yes 20 SD_D4 none z -- -- SD_D4 hw pu yes

9 SD_CLK none z -- -- SD_CLK hw -- yes 10 SD_D5 none z -- -- SD_D5 hw pu yes 11 SD_CMD none z -- -- SD_CMD hw pu yes

19 GPIO14 GPIO

26 GPIO15 (SD_nCD) GPIO

24 GPIO12 GPIO

OUT-

PUT

PU/PDIN-

zpuyes

PUT

FUNCTION

Post-Reset State

SD Mode

OUT-

PUT

PU/PDIN-

PUT

27 GPIO2 / RXD / SDA GPIO

29 GPIO4 GPIO

21 GPIO10(CARD_PWR) GPIO

28 TEST TEST

18 nRESET nRESET

1 GPIO1 (LE D1) GPIO1

17:15 NC none z -- -- none z -- --

12 NC none z -- -- none z -- --

2 USB+ USB+ z -- --

3 USB- USB- z -- --

35 RBIAS

33 XTAL1 (CLKIN)

32 XTAL2

GPIO7 / TXD / SCK

GPIO

0----

z----

z--yes

0----

RXD z pu yes

TXD hw -- --

PWR VDD -- --

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Ultra Fast USB 2.0 SD/MMC Flash Media Controller

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Chapter 7 DC Parameters

7.1 Maximum Guaranteed Ratings

PARAMETER SYMBOL MIN MAX UNITS COMMENTS

Storage Temperature

Lead Temperature

3.3V supply voltage

Voltage on USB+ and USB- pins

Voltage on GPIO10

Voltage on any signal pin

Voltage on XTAL1

Voltage on XTAL2

DD33,

DDA33

-55 150 °C

325 °C Soldering < 10 seconds

-0.5 4.0 V

-0.5 (3.3V supply voltage + 2) ≤ 6V

-0.5 V

+ 0.3 V When internal power FET

DD33

+ 0.3 V

DD33

-0.5 4.0 V

-0.5 V

+ 0.3 V

DD18

operation of this pin is enabled, this pin may be simultaneously shorted to ground or any voltage up to 3.63V indefinitely, without damage to the device as long as V are less than 3.63V and TA is

DD33

and V

DDA33

less than 70oC.

Note 7.1 Stresses above the specified parameters may cause permanent damage to the device.

This is a stress rating only and functi onal operation of the device at any condition above those indicated in the operation sections of this specification is not implied .

Note 7.2 When powering this device from laboratory or system power supplies, it is important that

the Absolute Maximum Ratings not be exceeded or device failure can result. Some power supplies exhibit voltage spikes on their outputs when the AC power is switched on or off. In addition, voltage transients on the AC power line may appear on the DC output. When this possibility exists, it is suggested that a clamp circuit be used.

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Datasheet

Voltage

VDD33

VSS

10%

90%

3.3V

90%

Time

100%

Figure 7.1 Supply Rise Time Model

7.2 Recommended Operating Conditions

PARAMETER SYMBOL MIN MAX UNITS COMMENTS

Operating Temperature

Commercial Part Industrial Part

3.3V supply voltage V

3.3V supply rise time t Voltage on

USB+ and USB- pins

DD33,

DDA33

-40

70 85

°C °C

3.0 3.6 V (Note 7.3)

0 400 μs

-0.3 5.5 V If any 3.3V supply voltage drops below 3.0V, then the MAX becomes:

(3.3V supply voltage) + 0.5 ≤ 5.5

Voltage on any signal pin

Voltage on XTAL1 -0.3 V Voltage on XTAL2 -0.3 V

-0.3 V

DD33

DDA33

DD18

V V

Note 7.3 A 3.3V regulato r with an output tolerance of 1% must be used if the output of the internal

power FET’s must support a 5% tolerance.

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7.3 DC Electrical Characteristics

PA RAMETER SYMBOL MIN TYP MAX UNITS COMMENTS

I, IPU, IPD Type Input Buffer

Low Input Level High Input Level Pull Down Pull Up

IS Type Input Buffer

Low Input Level High Input Level Hysteresis

ICLK Input Buffer

Low Input Level High Input Level Input Leakage

Input Leakage

(All I and IS buffers)

IHI

PD PU

IHI

HYSI

ILCK

IHCK

ILI

2.0

1.4

-10

72 58

420

0.8 V

0.5

+10

μA μA

V V

μA

TTL Levels

= 0 to V

DD33

Low Input Leakage High Input Leakage

O12 Type Buffer

Low Output Level

High Output Level

Output Leakage

-10

DD33

- 0.4

-10

+10 +10

0.4

+10

μA μA

μA

VIN = 0

= V

DD33

= 12mA @

= 3.3V

DD33

= -12mA @

= 3.3V

DD33

= 0 to V

DD33

(Note 7.4)

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PA RAMETER SYMBOL MIN TYP MAX UNITS COMMENTS

I/O12, I/O12PU & I/O12PD Type Buffer

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

Low Output Level

High Output Level

Output Leakage

Pull Down Pull Up

IO-U

(Note 7.5)

I-R

(Note 7.6)

I/O200 Integrated Power FET for GPIO10

High Output Current Mode Low Output Current Mode

(Note 7.7)

PD PU

OUT

DD33

- 0.4

-10

200 100

72 58

0.4

+10

µA

μA μA

mA mA

= 12mA @

= 3.3V

DD33

= -12mA @

= 3.3V

DD33

= 0 to V

(Note 7.4)

Vdrop

FET

Vdrop

FET

DD33

= 0.46V = 0.23V

On Resistance (Note 7.7)

Output Voltage Rise Time Supply Current Unconfigured I Supply Current Active Full Speed High Speed Supply Current Suspend I Industrial Temperature Suspend I

Note 7.4 Output le akage is measured with the current pins in high impedance. Note 7.5 Se e The USB 2.0 Specification, Chapter 7, for USB DC electrical characteristics Note 7.6 R BIAS is a 3.3V tolerant analog pin. Note 7.7 Output current range is contro lled by prog ram so ftware, software disables FET du ri ng sho rt

circuit condition.

Note 7.8 The a ssignment of each Integrated Card Power FET to a designated Card Connector is

controlled by both firmware and the specific board implementation. Firmware will default to

DSON

CCINIT

CSBY

CSBYI

2.1

800

μs

80 90 mA

110

135

140 165

mA mA

350 700 µA 350 900 µA

FET

LOAD

= 70mA

= 10μF

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the settings listed in Table 10.1, “USB2244/USB2244i GPIO Usage (ROM Rev 0x00),” on

page 22.

Note 7.9 The 3.3V supply shoul d be at least at 75% of its operating condition before the 1.8V sup ply

is allowed to ramp up.

7.4 Capacitance

TA = 25°C; fc = 1MHz; V

PARAMETER SYMBOL

Clock Input Capacitance C

Input Capacitance C Output Capacitance C

DD, VDDP

= 1.8V

Table 7.1 Pin Capacitance

LIMITS

XTAL

OUT

UNIT TEST CONDITIONMIN TYP MAX

2 pF All pins (except USB pins

and pins under test) are tied

to AC ground. 10 pF 20 pF

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Chapter 8 AC Specifications

8.1 Oscillator/Clock

Crystal: Paralle l Resonant, Fundamental Mode, 24 MHz ± 100ppm. External Clock: 50% Duty cycle ± 10%, 24 MHz ± 100ppm, Jitter < 100ps rms.

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Datasheet

XTAL1

S1 =

CB + C

XTAL

)

Crystal

Figure 8.1 Typical Crystal Circuit

Note: CB equals total board/trace capacitance.

(C1 + CS1) x (C2 + CS2)

1Meg

XTAL2

S2 =

CB + C

XTAL

)

+ CS1 + C2 + CS2)

Figure 8.2 Formula to Find Value of C

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and C

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Chapter 9 Package Outline

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Datasheet

Figure 9.1 USB224 4/USB2244i 36-QFN, 6x6mm Body, 0.5mm Pitch

Ultra Fast USB 2.0 SD/MMC Flash Media Controller

Chapter 10 GPIO Usage

Table 10.1 USB2244/USB2244i GPIO Usage (ROM Rev 0x00)

NAME ACTIVE LEVEL SYMBOL DESCRIPTION AND NOTE

GPIO1 H LED1 LED indicator

Datasheet

GPIO2 H RXD / SDA Receive Port of Debugger / Serial

GPIO4 USER GPIO User defined GPIO7 H TXD / SCK Transmit Port of Debugger / Serial

GPIO10 L CRD_PWR Card Power Control GPIO12 U SER GPIO User defined GPIO14 U SER GPIO User defined GPIO15 L SD_nCD Secure Digital card detect

EEPROM Data

EEPROM Clock

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SMSC USB2244, USB2244i User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1 Acronyms

Chapter 2 Block Diagram

Figure 2.1 USB2 244/USB2244i Block Diagram

Chapter 3 Pin Table

3.1 36-Pin Package

Table 3.1 USB224 4/2244i 36-Pin QFN Package

Chapter 4 Pin Configuration

Figure 4.1 USB22 44/USB2244i 36 Pin QFN Diagram

Chapter 5 Pin Descriptions

5.1 Pin Descriptions

Table 5.2 USB2244/2244i 36-Pin QFN Pin Descriptions

5.2 Buffer Type Descriptions

Table 5.3 USB2244/USB22 44i Buffer Type Descriptions

Chapter 6 Pin Reset State Table

Figure 6.1 Pin Reset States

Figure 6.2 Legend for Pin Reset States Table

6.1 36-Pin Reset States

Table 6.1 USB2244/USB2244i Pin Reset States

Chapter 7 DC Parameters

7.1 Maximum Guaranteed Ratings

Figure 7.1 Supply Rise Time Model

7.2 Recommended Operating Conditions

7.3 DC Electrical Characteristics

7.4 Capacitance

Table 7.1 Pin Capacitance

Chapter 8 AC Specifications

8.1 Oscillator/Clock

Figure 8.1 Typical Crystal Circuit

Chapter 9 Package Outline

Figure 9.1 USB224 4/USB2244i 36-QFN, 6x6mm Body, 0.5mm Pitch

Chapter 10 GPIO Usage

Table 10.1 USB2244/USB2244i GPIO Usage (ROM Rev 0x00)