Instruction/ maintenance manual of the product USB2244 SMSC
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SMSC USB2244/USB2244i DA T ASHEET Revision 1.0 (05-27-08) Datasheet PRODUCT FEA TURES USB2244/USB2244 I Ultra Fast USB 2.0 SD/MMC Flash Media Controller General Descripti on The SMSC USB2244/USB2244i is a USB 2.
ORDER NUMBER: USB2244/USB2244i-AEZG-XX for 36 pin, QFN Lead- Free RoHS Compliant Package “XX” in the order number indicat es the internal ROM firmware re vision level.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 3 Revision 1.0 (05-27-08) DA T ASHEET T able of Content s Chapter 1 Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 4 SMSC USB2244/USB2244i DA T ASHEET List of Figures Figure 2.1 USB2244/USB2 244i Block Di agram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 5 Revision 1.0 (05-27-08) DA T ASHEET List of T ables Table 3.1 USB2244/2244i 36-Pin QFN Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 6 SMSC USB2244/USB2244i DA T ASHEET Chapter 1 Acronyms MMC: MultiMediaCard PLL: Phase-Locked Loop QFN: Quad Flat no L.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 7 Revision 1.0 (05-27-08) DA T ASHEET Chapter 2 Block Diagram Figure 2.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 8 SMSC USB2244/USB2244i DA T ASHEET Chapter 3 Pin T able 3.1 36-Pin Package T able 3.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 9 Revision 1.0 (05-27-08) DA T ASHEET Chapter 4 Pin Configuration Figure 4.1 USB2244/USB2244i 36 Pin QFN Diagra m Thermal Slug (must be connected to VSS ) SMSC USB2244/2244i (Top View QFN-36) Indicates pins on the bot tom of the device.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 10 SMSC USB2244/USB2244i DA T ASHEET 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.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 1 1 Revision 1.0 (05-27-08) DA T ASHEET 24MHz Crystal or external clock input XT AL1 (CLKIN) 33 ICLKx This pin can be connected to one termin al of the crystal or it can be connected to an externa l 24 clock when a crystal is not used.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 12 SMSC USB2244/USB2244i DA T ASHEET 5.2 Buffer T ype Descriptions TEST Input TEST 28 I This signal is us ed for testing the chip. User should normally tie this pin lo w externally if the test function is not used.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 13 Revision 1.0 (05-27-08) DA T ASHEET Chapter 6 Pin Reset S t ate T able Figure 6.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 14 SMSC USB2244/USB2244i DA T ASHEET 6.1 36-Pin Reset S t ates T able 6.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 15 Revision 1.0 (05-27-08) DA T ASHEET Chapter 7 DC Parameters 7.1 Maximum Guaranteed Ratings Note 7.1 S tresses above the specified parameters may cause perman ent damage to the device.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 16 SMSC USB2244/USB2244i DA T ASHEET Figure 7.1 Supply Rise T ime Model 7.2 Recommended Operating Conditions Note 7.3 A 3.3V regulator with an output tolerance of 1% mu st be used if the output of the internal power FET’s must support a 5% tolerance.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 17 Revision 1.0 (05-27-08) DA T ASHEET 7.3 DC Electrical Characteristics P ARAMETER SYMBOL MIN TYP MAX UNITS COMMENTS I, IPU, IPD T ype Input Buffer Low Input Leve l High Input Level Pull Down Pull Up V ILI V IHI PD PU 2.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 18 SMSC USB2244/USB2244i DA T ASHEET Note 7.4 Output leakage is measured w ith the current pins in hi gh impedance. Note 7.5 See The USB 2.0 S pecification, Chapter 7 , for USB DC electri cal characteristi cs Note 7.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet SMSC USB2244/USB2244i 19 Revision 1.0 (05-27-08) DA T ASHEET the settings listed in T able 10.1, “USB2244/USB2244i GP IO Usage (ROM Rev 0x00),” on page 22 . Note 7.9 The 3.3V supply should be at least at 75% of its operating condition before the 1.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 20 SMSC USB2244/USB2244i DA T ASHEET Chapter 8 AC S pecifications 8.1 Oscillator/Clock Crystal: Parallel Resonant, Fundamental Mode, 24 MHz ± 100ppm. External Clock: 50% Duty cycl e ± 1 0 % , 2 4 M H z ± 10 0ppm, Jitter < 1 00ps rms.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 21 SMSC USB2244/USB2244i DA T ASHEET Chapter 9 Package Outline Figure 9.
Ultra Fast USB 2.0 SD/MMC Flash Media Controller Datasheet Revision 1.0 (05-27-08) 22 SMSC USB2244/USB2244i DA T ASHEET Chapter 10 GPIO Usage T able 10.
An important point after buying a device SMSC USB2244 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought SMSC USB2244 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data SMSC USB2244 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, SMSC USB2244 you will learn all the available features of the product, as well as information on its operation. The information that you get SMSC USB2244 will certainly help you make a decision on the purchase.
If you already are a holder of SMSC USB2244, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime SMSC USB2244.
However, one of the most important roles played by the user manual is to help in solving problems with SMSC USB2244. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device SMSC USB2244 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center