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SMSC USB2512A DA T ASHEET Revision 1.96 (07-1 1- 08) Datasheet PRODUCT FEA TURES USB2512A USB 2.0 Hi-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 NUMBERS: USB2512A-AEZG FOR 36 PIN, QFN LEAD-FREE ROH S COMPLIANT PACKAGE USB 2.0 Hi-S peed 2-Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 2 SMSC USB2512A DA T ASHEET 80 ARKA Y DRIVE, HAUPP AUGE, NY 1 1788 (631) 435-6000 , F AX (631) 273 -3123 Copyright © 20 08 SMSC or it s subsidiaries.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 3 Revision 1.96 (07-1 1-08) DA T ASHEET T able of Content s Chapter 1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 4 SMSC USB2512A DA T ASHEET List of Figures Figure 1.1 USB2512A 36-Pin QFN (Embedded Footprint) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 5 Revision 1.96 (07-1 1-08) DA T ASHEET List of T ables Table 3.1 USB2512A Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 6 SMSC USB2512A DA T ASHEET Chapter 1 Pin Configuration Figure 1.1 USB2512A 36-Pin QFN (Emb edded Footprint) Thermal Slug (must be connected to VSS) SMSC USB2512A Embedded Footprint (Top View Q FN-3 6) Indicates pins on the bottom of the devi ce.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 7 Revision 1.96 (07-1 1-08) DA T ASHEET Chapter 2 Block Diagram Figure 2.1 USB2512A Block Diagram To U pst ream V BUS 3.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 8 SMSC USB2512A 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 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 9 Revision 1.96 (07-1 1-08) DA T ASHEET RBIAS 35 I-R USB T ranscei ver Bias A 12.0k Ω (+/- 1%) resistor is attached from ground to this pin to set the transceiver ’s internal bias settings.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 10 SMSC USB2512A 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 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 1 1 Revision 1.96 (07-1 1-08) DA T ASHEET T able 3.2 SMBus or EEPROM Interface Behavior CFG_SEL1 CFG_SEL0 SMBUS OR EEPROM INTERFACE BEH.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 12 SMSC USB2512A DA T ASHEET 3.2 Buffer T ype Descriptions T able 3.4 USB2512A Buffer T y pe Des criptions BUFFER DESCRIPTION I Input. IPD Input with internal weak pull -down resistor .
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 13 Revision 1.96 (07-1 1-08) 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 peci fication Revision 2.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 14 SMSC USB2512A 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 A0h.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 15 Revision 1.96 (07-1 1-08) 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 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 16 SMSC USB2512A 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 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 17 Revision 1.96 (07-1 1-08) DA T ASHEET 4.2.1.8 Register 07h: Configurat ion Dat a Byte 2 0 PORT_PWR Port Power Switchi ng: Enables power switching on all ports simultaneously (ganged), or port power is indi vidually sw itched on and off on a port- by-port basis (individual).
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 18 SMSC USB2512A DA T ASHEET 4.2.1.9 Register 08h: Configurat ion Dat a Byte 3 4.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 19 Revision 1.96 (07-1 1-08) DA T ASHEET 4.2.1.1 1 Register 0Ah: Port Disa ble For Self Powered Operation 4.2.1.12 Register 0Bh: Port Di sable For Bus Powered Op eration BIT NUMBER BIT NAME DESCRIPTION 7:0 PORT_DIS_SP Port Disable Self-Powered: Disables 1 or more contiguous p orts.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 20 SMSC USB2512A DA T ASHEET 4.2.1.13 Register 0Ch: Max Powe r For Self Powered Opera tion 4.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 21 Revision 1.96 (07-1 1-08) DA T ASHEET 4.2.1.16 Register 0Fh: Hu b Controller Max Current For Bus Powered Operatio n 4.2.1.17 Register 10h: Power-On T ime 4.2.1.18 Register F6h: Bo ost_Up 4.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 22 SMSC USB2512A DA T ASHEET 4.2.1.20 Register F Ah: Port Swap 3:2 BOOST_IOUT_2 USB el ectrical signaling drive strength Boost Bit for Downstream Port ‘2’.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 23 Revision 1.96 (07-1 1-08) 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 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 24 SMSC USB2512A DA T ASHEET 4.2.1.22 Register FFh: S tatus/Command 4.2.2 I 2 C EEPROM The I 2 C EEPROM interface implement.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 25 Revision 1.96 (07-1 1-08) 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 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 26 SMSC USB2512A DA T ASHEET Figure 4.1 Block Write Block Read A Block Read differs from a block write in that th e repeated start conditio n exists to satisfy the I 2 C specification’s requirement for a ch ange in the t ransfer direction .
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 27 Revision 1.96 (07-1 1-08) 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. 4.3.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 28 SMSC USB2512A 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 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 29 Revision 1.96 (07-1 1-08) 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 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 30 SMSC USB2512A DA T ASHEET 4.6.2.3 RESET_N for SMBus Slave Configuration Figure 4.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 31 Revision 1.96 (07-1 1-08) 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 be havior after completion of the reset sequence.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 32 SMSC USB2512A DA T ASHEET Chapter 5 DC Parameters 5.1 Maximum Guaranteed Ratings Note 5.1 S tresses above the specified parameters co uld cause permanent damag e to the device.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 33 Revision 1.96 (07-1 1-08) DA T ASHEET 5.2 Operating Conditions PARAMETER SYMBOL MIN MAX UNITS COMMENT S Operating T e mperature T A 0 70 °C Ambient temperature in still a ir . 1.8V supply voltage V DDA18PLL V DD18 1.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 34 SMSC USB2512A DA T ASHEET Notes: 1. Output leakage i s measured with the current pins in high impedance. 2. See USB 2.0 S pecification for U SB DC electrical characteristics.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet SMSC USB2512A 35 Revision 1.96 (07-1 1-08) DA T ASHEET CAP ACIT ANCE T A = 25°C; fc = 1MHz; V DD18 , V DDPLL = 1.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 36 SMSC USB2512A 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, Jitter < 100 ps rms.
USB 2.0 Hi-S peed 2- Port Hub Controller Datasheet Revision 1.96 (07-1 1-08) 37 SMSC USB2512A DA T ASHEET Chapter 7 Package Outline Figure 7.1 36-Pin QFN, 6x6mm Body , 0.
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