SMSC USB2250i, USB2251, USB2250, USB2251i User Manual
USB2250/50i/51/51i
Ultra Fast USB 2.0 Multi-Slot
Flash Media Controller
PRODUCT FEATURES
General Description
The SMSC USB2250/50i/51/51i is a USB 2.0 compliant, high
speed Mass Storage Class Peripheral Controller intended for
reading and writing to
formats from the
Picture Card
CompactFlash® (CF), SmartMedia
TM
(xD)1, Memory StickTM (MS), Secure Digital
(SD), and MultiMediaCard
The SMSC USB2250/50i/51/51i 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.
General Features
128-pin VTQFP (1 4x14mm) lead-free RoHS compliant
package
Targeted for applications in which single or "combo" media
sockets are used
Supports multiple simultaneous card insertions
Flexible assignment of number of LUNs and how card type s
are associated with the LUNs
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
Hardware Features
Sin gle Chip Flash Media Controller with non-multiplexed
interface for independent card sockets
Flash Media Specification Revision Compliance
— Compact Flash Specification 4.1
– CF UDMA Modes 0-4
– CF PIO Modes 0-6
— Memory Stick Specification 1.43
— Memory Stick Pro Format Specification 1.02
— Memory Stick Pro-HG Duo Format Specification 1.01
– Memory Stick, MS Duo, HS-MS, MS Pro-HG, MS Pro
— xD Picture Card 1.2
— Smart Media Specification 1.3
— 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
— xD player mode operation
— Socket switch polarities, etc.
Media Activity LED
more than 24 popular flash media
TM
(MMC) families.
TM
(SM), xD
Datasheet
GPIO configuration and polarity
— Up to 11 GPIOs (based on configuration) for special
function use: LED indicators, button inputs, power
control to memory devices, etc. The number of actual
GPIO’s depends on the implementation configuration
used.
— Four GPIO’s with up to 200 mA drive
— An additional 16 GPIO’s if CF is not used
On Board 24MHz Crystal Driver Circuit
Optio nal external 24MHz clock input
4 Ind ependent Internal Card Power FET
— 200mA each
— "Fold-back" short circuit current protected
8051 8-bit microprocessor
— 60MHz - single cycle execution
— 64KB ROM; 14KB RAM
Internal Regulator for 1.8V core operation
Optimized pinout improves signal routing, easing
implementation and allowing for improved signal integrity
OEM Selectable Features
VID/PID/Language ID
28-character Manufacturer ID and Product string
12-hex digit (max) Serial Number string
Customizable Vendor specific data by optional use of
external serial EEPROM
Bus- or Self- powered selection
LED blink interval or duration
Inter nal power FET configuration
Software Features
Optimized for low latency interrupt handling
Reduced memory footprint
Device F irmware Upgrade (DFU) support of external
EEPROM or External Flash
— Assembly line support
— End user field upgrade support
— DFU Package consists of driver, firmware, sample DFU
application and source code, DFU driver API
Optio nal custom firmware with external ROM (up to 128k)
Please see the USB2250/50i/51/51i 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
TM
1.) xD Picture Card not applicable to USB2251.
SMSC USB2250/50i/51/51i DATASHEET Revision 1.1 (05-29-08)
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
ORDER NUMBER:
USB2250/50i/51/51i-NU-XX for 12 8-pin, VTQFP Lead-Free RoHS Complian t Package
“XX” in the order number indicates the internal ROM firmware revision level.
Please contact your SMSC sales representative for more information.
Table 0.1 USB2250/50i/51/51iComparison of Features
Datasheet
CompactFlash®
Memory Stick
Part Number
Secure Digital
MultiMediaCard
SmartMedia
USB2250
USB2250i
USB2251
USB2251i
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.
TM
TM
TM
xD Picture
TM
Card
..
..
.
.
Operational
temperature
0ºC to 70ºC
-40ºC to 85ºC
0ºC to 70ºC
-40ºC to 85ºC
SMSC USB2250/50i/51/51i 2 Revision 1.1 (05-29-08)
DATASHEET
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
Table of Contents
Chapter 1 Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chapter 3 Pin Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 128-Pin Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 4 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 5 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1 USB2250/50i/51/51i 128-Pin VTQFP Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Chapter 6 Pin Reset State Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1 128-Pin Reset States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Chapter 7 DC Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.1 Maximum Guaranteed Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2 Recommended Operating Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.3 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.4 Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Chapter 8 AC Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.1 Oscillator/Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Chapter 9 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter 10 GPIO Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
SMSC USB2250/50i/51/51i 3 Revision 1.1 (05-29-08)
DATASHEET
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
List of Figures
Figure 2.1 USB2250/50i/51/51i Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4.1 USB2250/50i/51/51i 128-Pin VTQFP Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 6.1 Pin Reset States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 6.2 Legend for Pin Reset States Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 6.3 USB2250/50i/51/51i Pin Reset States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 7.1 Supply Rise Time Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 8.1 Typical Crystal Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 8.2 Formula to Find Value of C1 and C2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 9.1 USB2250/50i/51/51i 128-Pin VTQFP, 14x14x1.0mm Body, 2.0mm Pitch. . . . . . . . . . . . . . . 34
Revision 1.1 (05-29-08) 4 SMSC USB2250/50i/51/51i
DATASHEET
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
List of Tables
Table 0.1 USB2250/50i/51/51iComparison of Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table 3.1 USB2250/50i/51/51i 128-Pin VTQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5.2 USB2250/50i/51/51i Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 7.1 Pin Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 10.1 USB2250/50i/51/51i GPIO Usage (ROM Rev 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
SMSC USB2250/50i/51/51i 5 Revision 1.1 (05-29-08)
DATASHEET
Chapter 1 Acronyms
CF: Compact Flash
CFC: Compact Flash Controller
EEPROM: Electrically Erasable Programmable Read-Onl y Memory
FET: Field Effect Transistor
LUN: Logical Unit Number
MMC: MultiMediaCard
MS: Memory Stick
MSC: Memory Stick Controller
PLL: Phase-Locked Loop
RoHS: Restriction of Hazardous Substances Directive
SD: Secure Digital
SDIO: Secure Digital Input/Output
SDC: Secure Digital Controllerl
SIE: Serial Interface Engine
SM: SmartMedia
SMC: SmartMedia Controller
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
VTQFP: Very Thin Quad Flat Package
xD: xD Picture Card
*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.
Revision 1.1 (05-29-08) 6 SMSC USB2250/50i/51/51i
DATASHEET
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
Chapter 2 Block Diagram
USB
Host
PHY
SIE
CTL
BUS
INTFC
BUS
INTFC
AUTO_
CBW
PROC
FMDU
CTL
EP0 TX
EP0 RX
FMI
SD/
MMC
CF/
GPIO (16)
MS
SM
1.8V Reg
PLL
64KB*
Clock
Generation and
Control
RAM
10KB
ROM
ADDR
MAP
XDATA BRIDGE
+ BUS ARBITER
8051
PROCESSOR
BUS
INTFC
Program Memory I/O Bus
RAM
EP1 RX
EP1 TX
EP2 RX
EP2 TX
SFR
RAM
4K
total
PWR_FET0
PWR_FET1
PWR_FET2
PWR_FET3
GPIOs
GPIO8/CARD_PWR0
GPIO9/CARD_PWR1
GPIO10/CARD_PWR2
GPIO11/CARD_PWR3
11 pins
*ROM is not available in USB2259
Figure 2.1 USB2250/50i/51/51i Block Diagram
SMSC USB2250/50i/51/51i 7 Revision 1.1 (05-29-08)
DATASHEET
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Chapter 3 Pin Table
3.1 128-Pin Package
Table 3.1 USB2250/50i/51/51i 128-Pin VTQFP Package
COMPACTFLASH INTERFACE (28 PINS)
CF_D0/GPIO16 CF_D1/GPIO17 CF_D2/GPIO18 CF_D3/GPIO19
CF_D4/GPIO20 CF_D5/GPIO21 CF_D6/GPIO22 CF_D7/GPIO23
CF_D8/GPIO24 CF_D9/GPIO25 CF_D10/GPIO26 CF_D11/GPIO27
CF_D12/GPIO28 CF_D13/GPIO29 CF_D14/GPIO30 CF_D15/GPIO31
CF_nIOR CF_nIOW CF_IRQ CF_nRESET
CF_IORDY CF_nCS0 CF_DMACK/TXD/GPIO7 CF_SA0
CF_SA1 CF_SA2 GPIO13 (CF_nCD) CF_DMARQ/RXD/GPIO2
Datasheet
SMARTMEDIA INTERFACE (17 PINS)
SM_D0 SM_D1 SM_D2 SM_D3
SM_D4 SM_D5 SM_D6 SM_D7
SM_ALE SM_CLE SM_nRE SM_nWE
SM_nWP SM_n B/R SM_nCE GPIO14 (SM_nCD)
SM_nWPS
MEMORY STICK INTERFACE (11 PINS)
MS_BS MS_D0/MS_SDIO MS_SCLK GPIO12 (MS_INS)
MS_D1 MS_D2 MS_D3 MS_D4
MS_D5 MS_D6 MS_D7
SD/MMC INTERFACE (12 PINS)
SD_CMD SD_CLK SD_D0 SD_D1
SD_D2 SD_D3 GPIO6 (SD_WP) GPIO15 (SD_nCD)
SD_D4 SD_D5 SD_D6 SD_D7
USB INTERFACE (8 PINS)
USB+ USB- RBIAS VDD18PLL
VDDA33 XTAL2 XTAL1 (CLKIN) REG_EN
Revision 1.1 (05-29-08) 8 SMSC USB2250/50i/51/51i
DATASHEET
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
T able 3.1 USB2250/50i/51/51i 128-Pin VTQFP Package (continued)
MEMORY/IO INTERFACE (28 PINS)
MA0/CLK_SEL0 MA1/CLK_SEL1 MA2 MA3
MA4 MA5 MA6 MA7
MA8 MA9 MA10 MA11
MA12 MA13 MA14 MA15
MA16 MD0 MD1 MD2
MD3 MD4 MD5 MD6
MD7 nMRD nMWR nMCE
MISC (10 PINS)
nRESET GPIO3 (VBUS_DET) GPIO4 (SCL/xD_ID) GPIO5 (SDA)
LED1 / GPIO1 GPIO8/CARD_PWR0 GPIO9/CARD_PWR1 GPIO10/CARD_PWR2
GPIO11/CARD_PWR3 TEST
DIGITAL, POWER (14 PINS)
(5) VDD33 (1) VDD18 (8) VSS
TO TA L 1 2 8
SMSC USB2250/50i/51/51i 9 Revision 1.1 (05-29-08)
DATASHEET
Chapter 4 Pin Configuration
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
GPIO12 (MS _INS)
CF_DMARQ / RXD / GPIO2
GPIO4 (SCL/xD_ID)
CF_DMACK / TXD / GPIO7
GPIO3 (VBUS_DET)
MS_D6
MS_D3
MS_D7
MS_SCLK
VSS
TEST
VDD33
GPIO6 (SD_WP)
MA7
MA13
MA6
MA8
MA5
MA9
MA4
MA11
MA3
nMRD
MA2
LED1 / GPIO1
VSS
XTAL2
XTAL1 (CLKIN)
VDD18PLL
VSS
RBIAS
VDDA33
MS_D295MS_D494MS_D0 / MS_SDIO93MS_D592MS_D191MS_BS90CF_D10 / GPIO2689CF_D9 / GPIO2588CF_D2 / GPIO1887CF_D8 / GPIO2486CF_D1 / GPIO1785CF_D0 / GPIO1684CF_SA083CF_SA182CF_SA281VSS80CF_IORDY79CF_nRESET78GPIO9 / CRD_PWR177VDD3376GPIO10 / CRD_PWR275VSS74CF_IRQ73CF_nIOW
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
1
3
4
5
6
7
SMSC
USB225X
128 VTQFP
(Top View)
8
9
10
16
17
18
14
19
CF_nIOR
CF_nCS070CF_D15 / GPIO3169CF_D7 / GPIO2368CF_D14 / GPIO3067CF_D6 / GPIO2266CF_D13 / GPIO2965VDD33
72
71
64
nRESET
63
CF_D5 / GPIO21
62
CF_D12 / GPIO28
61
CF_D4 / GPIO20
60
CF_D11 / GPIO27
59
CF_D3 / GPIO19
58
GPIO13 (CF_nCD)
57
GPIO14 (SM_nCD)
56
SM_nB/R
55
SM_nRE
54
SM_nCE
53
SM_CLE
52
SM_ALE
51
VSS
50
VDD33
49
VDD18
48
SM_nWE
47
SM_nWP
46
SM_D0
45
SM_D1
44
SM_D2
43
SM_D3
42
SM_D4
41
SM_D5
40
SM_D6
39
SM_D7
38
SM_nWPS
37
MD0
36
MD1
35
MD2
34
MD3
33
MD7
20
21
24
25
26
27
28
29
32
MA122MA15
nMWR
MA14
VSS
USB-
USB+
REG_EN
SD_D111SD_D612SD_D013SD_D715VDD33
VSS
SD_D5
SD_CLK
SD_D422SD_D323SD_D2
SD_CMD
MA10
nMCE
MD630MD531MD4
MA16
GPIO5 (SDA)
MA1 / CLK_SEL1
MA0 / CLK_SEL0
GPIO8 / CRD_PWR0
GPIO11 / CRD_PWR3
GPIO15 (SD_nCD)
Figure 4.1 USB2250/50i/51/51i 128-Pin VTQFP Diagram
Revision 1.1 (05-29-08) 10 SMSC USB2250/50i/51/51i
DATASHEET
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
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 USB2250/50i/51/51i 128-Pin VTQFP Pin Descriptions
Table 5.1 USB2250/50i/51/51i 128-Pin VTQFP Pin Descriptions
NAME SYMBOL
CF Chip Select 0 CF_nCS0 71 O12 This pin is the active low chip select 0 signal
CF Register
Address
CF Interrupt CF_IRQ 74 IPD This is the active high interrupt request
CF Data 15-8 /
GPIO
CF_SA[2:0] 82
CF_D[15:8] /
GPIO[31:24]
128-PIN
VTQFP
COMPACT FLASH INTERFACE
83
84
70
68
66
62
60
90
89
87
BUFFER
TYPE DESCRIPTION
for the task file registers of the CF ATA
device in True IDE mode.
I/O12 These pins are the register select address
bits for the CF ATA device.
signal from the CF device.
This pin has an internal weak pull-down
resistor that can be controlled by:
CF_INTF_EN bit of CFC_ATA_MODE_CTL.
I/O12PD CF_D[15:8]: The bi-directional data signals
CF_D15 - CF_D8 in True IDE mode data
transfer
In True IDE Mode, all task file register
operations occur on the CF_D[7:0], while
data transfer occurs on CF_D[15:0].
The bi-directional data signal has an internal
weak pull-down resistor.
I/O12 GPIO[31:24]: These pins are GPIOs if the
SMSC USB2250/50i/51/51i 11 Revision 1.1 (05-29-08)
DATASHEET
CF_INTF_EN bit of the CFC_ATA_MODE
CTL is disabled and the EXTENDED_GPIO
bit is set in UTIL_CONFIG1 is enabled.
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