Instruction/ maintenance manual of the product USB2512 SMSC
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SMSC USB2512 DA T ASHEET Revision 1.92 (1 1-28-07) Datasheet PRODUCT FEA TURES USB2512 USB 2.0 High-S peed 2-Port Hub Controller General Description The SMSC 2-Port Hub is a low power , OEM configurable, STT (Single transaction translator) hub controller IC with 2 downstream ports for embedded USB solutions.
ORDER NUMBER(S): USB2512-AEZG FOR 36 PIN, QFN LE AD-FREE ROHS COMPLIANT PACKAGE USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 2 SMSC USB2512 DA T ASHEET 80 ARKA Y DRIVE, HAUPP AUGE, NY 1 1788 (631) 435-6 000, FA X (631) 273-3123 Copyright © 20 07 SMSC or its subsidiari es.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 3 Revision 1.92 (1 1-28-07) DA T ASHEET T able of Content s Chapter 1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 4 Revision 1.92 (1 1-28-07) DA T ASHEET List of Figures Figure 1.1 USB2512 36-Pin QFN (Embedded Footprint) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 5 Revision 1.92 (1 1-28-07) DA T ASHEET List of T ables Table 3.1 USB2512 Pin Desc riptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 6 Revision 1.92 (1 1-28-07) DA T ASHEET Chapter 1 Pin Configuration Figure 1.1 USB2512 36-Pin QFN (Emb edded Footprint) Thermal Slug (must be connected to VSS) SMSC USB2512 Embedded Footprint (Top View QFN-36) Indicates pins on the bottom of the device.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 7 Revision 1.92 (1 1-28-07) DA T ASHEET Chapter 2 Block Diagram Figure 2.1 USB2512 Block Diagram To U pst r eam V BUS 3.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 8 Revision 1.92 (1 1-28-07) DA T ASHEET Chapter 3 Pin Descriptions 3.1 PIN Descriptions This section provides a detailed description of each signal. The signals are arranged in functional groups according to their associated interface.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 9 SMSC USB2512 DA T ASHEET SERIAL PORT INTERF ACE SDA/ SMBDA T A/ NON_REM1 22 I/OSD12 Serial Data / SMB Data & Port Non Removable S trap Option NON_REM1: Non removable port strap option.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 10 Revision 1.92 (1 1-28-07) DA T ASHEET XT AL2 32 OCLKx Crystal Output 24MHz Crystal This is the other terminal of the crystal, or a NO-CONNECT when an external clock source is used to drive XT AL1/CLKIN.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 1 1 SMSC USB2512 DA T ASHEET 0 1 Configured as an SMBus slave for e xternal download of user-defined descriptors .
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 12 Revision 1.92 (1 1-28-07) DA T ASHEET 3.2 Buffer T ype Descriptions T able 3.4 USB2512 Buffer T ype Des criptions BUFFER DESCRIPTION I Input. IPD Input with internal weak pull -down resistor .
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 13 Revision 1.92 (1 1-28-07) DA T ASHEET Chapter 4 Configuration Options 4.1 2-Port Hub SMSC’s USB 2.0 2-Port Hub is fully specification co mpliant to the Universal Serial Bus S pecification Revision 2.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 14 SMSC USB2512 DA T ASHEET 4.2.1.1 Register 00h: V e ndor ID (LSB) 03h R/W PID MSB PIDM 25h 0x00 04h R/W DID LSB DIDL 00h.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 15 Revision 1.92 (1 1-28-07) DA T ASHEET 4.2.1.2 Register 01h: V e ndor ID (MSB) 4.2.1.3 Register 02h: Product ID (LSB) 4.2.1.4 Register 03h: Product ID (MSB) 4.2.1.5 Register 04h: Device ID (LSB) 4.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 16 SMSC USB2512 DA T ASHEET 4.2.1.7 Register 06h: CONFIG_BYTE_1 BIT NUMBER BIT NAME DESCRIPTION 7 SELF_BUS_PWR Self or Bus Power: Selects between Self- and Bus-Powered operation.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 17 Revision 1.92 (1 1-28-07) DA T ASHEET 4.2.1.8 Register 07h: Configurat ion Data Byte 2 0 PORT_PWR Port Power Switchi ng: Enables power switching on all ports simultaneously (ganged), or port power is individually switched on and off on a port- by-port basis (individual).
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 18 SMSC USB2512 DA T ASHEET 4.2.1.9 Register 08h: Configurat ion Data Byte 3 4.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 19 Revision 1.92 (1 1-28-07) DA T ASHEET 4.2.1.1 1 Register 0Ah: Port Disa ble For Self Powered Operation 4.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 20 SMSC USB2512 DA T ASHEET 4.2.1.14 Register 0Dh: Max Power For Bus Powered Operation 4.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 21 Revision 1.92 (1 1-28-07) DA T ASHEET 4.2.1.17 Register 10h: Power-On T ime 4.2.1.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 22 SMSC USB2512 DA T ASHEET 4.2.1.20 Register F Ah: Port Swap BIT NUMBER BIT NAME DESCRIPTION 7:0 PRTSP Port Swap: Swaps the Upstream a nd Downstream USB DP and DM Pins for ease of board routing to devices and con nectors.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 23 Revision 1.92 (1 1-28-07) DA T ASHEET 4.2.1.21 Register FBh: Port Remap 12 BIT NUMBER BIT NAME DESCRIPTION 7:0 PRTR12 Port remap register for ports 1 & 2.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 24 SMSC USB2512 DA T ASHEET 4.2.1.22 Register FFh: S tatus /Command 4.2.2 I2C EEPROM The I2C EEPROM interface implement s .
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 25 Revision 1.92 (1 1-28-07) DA T ASHEET 4.2.3 In-Circuit EEPROM Programming The EEPROM can be programmed via A T E by pulling RESET_N low (which tri-states the Hub’ s EEPROM interface and allows an exter nal source to program the EEPROM).
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 26 SMSC USB2512 DA T ASHEET Figure 4.1 Block Write Block Read A Block Read differs from a block write in that the repe ated start condition exists to satisfy the I2C specification’s requirement for a ch ange in the t ransfer direction.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 27 Revision 1.92 (1 1-28-07) DA T ASHEET 4.3.5 Stretching the SCLK Signal The Hub supports stretching o f the SCLK by othe r device s on the SMBus. The Hub does not stretch the SCLK. 4.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 28 SMSC USB2512 DA T ASHEET 4.6.2 External Hardware RESET_N A valid hardware reset is defined as assertion of RESET_N for a minimum of 1us after all power supplies are within ope rating range.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 29 Revision 1.92 (1 1-28-07) DA T ASHEET Notes: When in Bus-Powered mode, the Hub and its associated circuitry must not consume more than 100mA from the upstream USB power source during t1+t5.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 30 SMSC USB2512 DA T ASHEET 4.6.2.3 RESET_N for SMBus Slave Configuration Figure 4.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 31 Revision 1.92 (1 1-28-07) DA T ASHEET 4. Clears all TT buffers. 5. Moves device from suspended to active (if suspende d). 6. Complies with Section 1 1.10 of the USB 2.0 S pecif ication for behavior after completion of the reset sequence.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 32 Revision 1.92 (1 1-28-07) DA T ASHEET Chapter 5 DC Parameters 5.1 Maximum Guaranteed Ratings Note: S tresses above th e specified parameters coul d cause permanent damag e to the device.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 33 SMSC USB2512 DA T ASHEET V oltage on XT AL1 -0.3 V DDA33 V V oltage on XT AL2 -0.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 34 Revision 1.92 (1 1-28-07) DA T ASHEET Notes: 1. Output leakage i s measured with the current pin s in high impedance. 2. See USB 2.0 S pecification for U SB DC electrical characteristics.
USB 2.0 High-S peed 2-Port Hub Controller Datasheet Revision 1.92 (1 1-28-07) 35 SMSC USB2512 DA T ASHEET CAP ACIT ANCE T A = 25°C; fc = 1MHz; V DD18 , V DDPLL = 1.
USB 2.0 High-S peed 2-Port Hub Contr oller Datasheet SMSC USB2512 36 Revision 1.92 (1 1-28-07) DA T ASHEET Chapter 6 AC S pecifications 6.1 Oscillator/Clock Crystal: Parallel Resonant, Fundamental Mode, 24 MHz ± 350ppm. External Clock: 50% Duty cycl e ± 1 0 % , 2 4 M H z ± 350ppm, Jitte r < 100 ps rms.
SMSC USB2512 37 Revision 1.92 (1 1-28-07) DA T ASHEET Chapter 7 Package Outline Figure 7.1 36-Pin QFN, 6x6mm Body , 0.5mm Pitch.
An important point after buying a device SMSC USB2512 (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 USB2512 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 USB2512 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, SMSC USB2512 you will learn all the available features of the product, as well as information on its operation. The information that you get SMSC USB2512 will certainly help you make a decision on the purchase.
If you already are a holder of SMSC USB2512, 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 USB2512.
However, one of the most important roles played by the user manual is to help in solving problems with SMSC USB2512. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device SMSC USB2512 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