- Standard Microsystems 2-Port Hub Controller Specification Sheet

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SMSC USB2512i DATASHEET Revision 1.92 (11-28-07)

Datasheet

PRODUCT FEATURES

USB2512i

Industrial Temperature

Rated USB 2.0 High-Speed

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. The 2-port hub is fully compliant with the

USB 2.0 Specification and will attach to an upstream

port as a Full-Speed Hub or as a Full-/High-Speed Hub.

The 2-Port Hub supports Low-Speed, Full- Speed, and

High-Speed (if operating as a High-Speed Hub)

downstream devices on all of the enabled downstream

ports.

General Features

 Hub Controller IC with 2 downstream ports

 Enhanced OEM configuration options available

through either a single serial I

C EEPROM, or

SMBus Slave Port

 36-pin (6x6mm) QFN lead-free, RoHS compliant

package

 Supports industrial temperature range of -40ºC - 85ºC

Hardware Features

 Low power operation

 Full Power Management with individual or ganged

power control of each downstream port

 On-chip Power On Reset (POR)

 Internal 1.8V Voltage Regulator

 Fully integrated USB termination and Pull-up/Pull-

down resistors

 On Board 24MHz Crystal Driver, Resonator or

External 24MHz clock input

 Enhanced EMI rejection and ESD protection

performance

OEM Selectable Features

 Customize Vendor ID, Product ID, and Device ID

 Select whether the hub is part of a compound device

(When any downstream port is permanently

hardwired to a USB peripheral device, the hub is part

of a compound device)

 Flexible port mapping and disable sequence. Ports

can be disabled/reordered in any order to support

multiple product SKUs. Hub will automatically reorder

the remaining ports to match the Host controller's

numbering scheme.

 Programmable USB differential-pair pin location.

Ease PCB layout by aligning USB signal lines directly

to connectors

 Programmable USB signal drive strength. Recover

USB signal integrity due to compromised system

environment using 2-level driving strength resolution

 Select the presence of a permanently hardwired USB

peripheral device on a port by port basis

 Configure the delay time for filtering the over-current

sense inputs

 Configure the delay time for turning on downstream

port power

 Indicate the maximum current that the 2-port hub

consumes from the USB upstream port

 Indicate the maximum current required for the hub

controller

 Pin Selectable Options for Default Configuration

— Select Downstream Ports as Non-Removable Ports

Applications

 LCD monitors and TVs

 Multi-function USB peripherals

 PC mother boards

 Set-top boxes, DVD players, DVR/PVR

 Printers and scanners

 PC media drive bay

 Portable hub boxes

 Mobile PC docking

 Embedded systems

Summary of content (37 pages)

PAGE 1
USB2512i Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller PRODUCT FEATURES Datasheet General Description T h e S M S C 2 - P o r t H u b i s a l o w p o w e r, O E M configurable, STT (Single transaction translator) hub controller IC with 2 downstream ports for embedded USB solutions. The 2-port hub is fully compliant with the USB 2.0 Specification and will attach to an upstream port as a Full-Speed Hub or as a Full-/High-Speed Hub.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet ORDER NUMBER(S): USB2512i-AEZG FOR 36 PIN, QFN LEAD-FREE ROHS COMPLIANT PACKAGE 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright © 2007 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Table of Contents Chapter 1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Chapter 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Chapter 3 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 3.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet List of Figures Figure 1.1 Figure 2.1 Figure 4.1 Figure 4.2 Figure 4.3 Figure 4.4 Figure 4.5 Figure 6.1 Figure 6.2 Figure 7.1 USB2512i 36-Pin QFN (Embedded Footprint) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 USB2512i Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Block Write . . . . . . . . . . . . . . . . . . . . . . .
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet List of Tables Table 3.1 Table 3.2 Table 3.3 Table 3.4 Table 4.1 Table 4.2 Table 4.3 Table 4.4 Table 4.5 Table 5.1 Table 5.2 USB2512i Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 SMBus or EEPROM Interface Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 USB2512i Power, Ground, and No Connect . . . . . . .
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Industrial Temperature Rated USB 2.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Chapter 2 Block Diagram T o U p stre a m V BUS U p stre a m U S B D a ta To EEPR O M or S M B u s M a ste r 2 4 M H z C rysta l 3 .3 V 1 .8 V PLL B u s -P o w e r D e te c t/V B U S P u ls e U p s tre a m PHY SD SCK S e ria l In te rfa c e 1 .
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 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. 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 when at the high voltage level.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Table 3.1 USB2512i Pin Descriptions (continued) SYMBOL QFN-36 EMB BUFFER TYPE DESCRIPTION SERIAL PORT INTERFACE SDA/ SMBDATA/ NON_REM1 22 I/OSD12 Serial Data / SMB Data & Port Non Removable Strap Option NON_REM1: Non removable port strap option. If this strap is enabled by package and configuration settings (see Table 3.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Table 3.1 USB2512i Pin Descriptions (continued) SYMBOL QFN-36 EMB BUFFER TYPE XTAL2 32 OCLKx DESCRIPTION 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 XTAL1/CLKIN. This output must not be used to drive any external circuitry other than the crystal circuit.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Table 3.2 SMBus or EEPROM Interface Behavior (continued) CFG_SEL1 CFG_SEL0 SMBUS OR EEPROM INTERFACE BEHAVIOR 0 1 Configured as an SMBus slave for external download of user-defined descriptors. SMBus slave address 58 (0101100x) Strap Options Disabled All Settings Controlled by Registers 1 0 Internal Default Configuration Strap Options Enabled Bus Power Operation 1 1 2-Wire I2C EEPROMS are supported.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 3.2 Buffer Type Descriptions Table 3.4 USB2512i Buffer Type Descriptions BUFFER I DESCRIPTION Input. IPD Input with internal weak pull-down resistor. IPU Input with internal weak pull-up resistor. IS O12 Input with Schmitt trigger. Output 12mA. OD12 Open drain... 12mA sink. I/O12 Input/Output buffer with 12mA sink and 12mA source. I/OSD12 Open drain...
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Chapter 4 Configuration Options 4.1 2-Port Hub SMSC’s USB 2.0 2-Port Hub is fully specification compliant to the Universal Serial Bus Specification Revision 2.0 April 27,2000 (12/7/2000 and 5/28/2002 Errata). Please reference Chapter 10 (Hub Specification) for general details regarding Hub operation and functionality.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Table 4.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.1.2 Register 01h: Vendor ID (MSB) BIT NUMBER BIT NAME DESCRIPTION 7:0 VID_MSB Most Significant Byte of the Vendor ID. This is a 16-bit value that uniquely identifies the Vendor of the user device (assigned by USB-Interface Forum). This field is set by the OEM using either the SMBus or EEPROM interface options. 4.2.1.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.1.7 Register 06h: CONFIG_BYTE_1 BIT NUMBER BIT NAME 7 SELF_BUS_PWR DESCRIPTION Self or Bus Power: Selects between Self- and Bus-Powered operation. The Hub is either Self-Powered (draws less than 2mA of upstream bus power) or Bus-Powered (limited to a 100mA maximum of upstream power prior to being configured by the host controller).
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet BIT NUMBER BIT NAME DESCRIPTION 0 PORT_PWR Port Power Switching: Enables power switching on all ports simultaneously (ganged), or port power is individually switched on and off on a port- by-port basis (individual). The ability to support power enabling on a port or ganged basis is hardware implementation dependent. 0 = Ganged switching (all ports together) 1 = Individual port-by-port switching 4.2.1.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.1.9 Register 08h: Configuration Data Byte 3 BIT NUMBER BIT NAME 7:4 Reserved 3 PRTMAP_EN DESCRIPTION Reserved Port Re-mapping enable: Selects the method used by the hub to assign port numbers and disable ports. ‘0’ = Standard Mode ‘1’ = Port Re-map mode 2:0 4.2.1.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.1.11 Register 0Ah: Port Disable For Self Powered Operation BIT NUMBER BIT NAME DESCRIPTION 7:0 PORT_DIS_SP Port Disable Self-Powered: Disables 1 or more contiguous ports. ‘0’ = port is available, ‘1’ = port is disabled.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 7:0 MAX_PWR_SP Max Power Self_Powered: Value in 2mA increments that the Hub consumes from an upstream port (VBUS) when operating as a self-powered hub. This value includes the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.1.17 Register 10h: Power-On Time BIT NUMBER BIT NAME DESCRIPTION 7:0 POWER_ON_TIME Power On Time: The length of time that it takes (in 2 ms intervals) from the time the host initiated power-on sequence begins on a port until power is good on that port. 4.2.1.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.1.20 Register FAh: Port Swap BIT NUMBER BIT NAME DESCRIPTION 7:0 PRTSP Port Swap: Swaps the Upstream and Downstream USB DP and DM Pins for ease of board routing to devices and connectors. ‘0’ = USB D+ functionality is associated with the DP pin and D- functionality is associated with the DM pin. ‘1’ = USB D+ functionality is associated with the DM pin and D- functionality is associated with the DP pin.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.1.21 Register FBh: Port Remap 12 BIT NUMBER BIT NAME 7:0 PRTR12 DESCRIPTION Port remap register for ports 1 & 2. When a hub is enumerated by a USB Host Controller, the hub is only permitted to report how many ports it has; the hub is not permitted to select a numerical range or assignment.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.1.22 Register FFh: Status/Command BIT NUMBER BIT NAME 7:3 Reserved 2 INTF_PW_DN DESCRIPTION Reserved SMBus Interface Power Down ‘0’ = Interface is active ‘1’ = Interface power down after ACk has completed 1 RESET Reset the SMBus Interface and internal memory back to RESET_N assertion default settings.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.2.3 In-Circuit EEPROM Programming The EEPROM can be programmed via ATE by pulling RESET_N low (which tri-states the Hub’s EEPROM interface and allows an external source to program the EEPROM). 4.3 SMBus Slave Interface Instead of loading User-Defined Descriptor data from an external EEPROM, the SMSC Hub can be configured to receive a code load from an external processor via an SMBus interface.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 1 7 1 1 S Slave Address Wr A 8 1 Register Address A ... 8 1 8 1 8 1 8 1 1 Byte Count = N A Data byte 1 A Data byte 2 A Data byte N A P Block Write Figure 4.1 Block Write Block Read A Block Read differs from a block write in that the repeated start condition exists to satisfy the I2C specification’s requirement for a change in the transfer direction.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4.3.5 Stretching the SCLK Signal The Hub supports stretching of the SCLK by other devices on the SMBus. The Hub does not stretch the SCLK. 4.3.6 SMBus Timing The SMBus Slave Interface complies with the SMBus AC Timing Specification. See the SMBus timing in the “Timing Diagram” section. 4.3.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 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 operating range. While reset is asserted, the Hub (and its associated external circuitry) consumes less than 500μA of current from the upstream USB power source. Assertion of RESET_N (external pin) causes the following: 1.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Table 4.3 Reset_N Timing for Default/Strap Option Mode (continued) NAME DESCRIPTION MIN t7 USB Idle. t8 Completion time for requests (with or without data stage). TYP MAX UNITS undefined msec 5 msec Notes: 4.6.2.2 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.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet RESET_N for SMBus Slave Configuration 4.6.2.3 Hardware reset asserted Reset Negation SMBus Code Load t1 t2 Hub PHY Stabilization Attach USB Upstream t3 t4 USB Reset recovery Start completion request response Idle t6 t5 t7 RESET_N VSS Figure 4.5 Reset_N Timing for SMBus Mode Table 4.5 Reset_N Timing for SMBus Mode NAME DESCRIPTION MIN t1 RESET_N Asserted. t2 Hub Recovery/Stabilization.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet 4. Clears all TT buffers. 5. Moves device from suspended to active (if suspended). 6. Complies with Section 11.10 of the USB 2.0 Specification for behavior after completion of the reset sequence. The Host then configures the Hub and the Hub’s downstream port devices in accordance with the USB Specification. SMSC USB2512i 31 DATASHEET Revision 1.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Chapter 5 DC Parameters 5.1 Maximum Guaranteed Ratings PARAMETER SYMBOL MIN MAX UNITS Storage Temperature TA -55 150 °C 325 °C Lead Temperature 1.8V supply voltage VDDA18PLL, VDD18 2.5 V 3.3V supply voltage VDDA33, VDD33PLL, VDD33, VDD33CR 4.6 V Voltage on any I/O pin -0.5 5.5 V Voltage on XTAL1 -0.5 4.0 V Voltage on XTAL2 -0.5 3.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet PARAMETER SYMBOL MIN MAX UNITS Voltage on XTAL1 -0.3 VDDA33 V Voltage on XTAL2 -0.3 VDD18 V COMMENTS Table 5.1 DC Electrical Characteristics PARAMETER SYMBOL MIN TYP MAX UNITS 0.8 V COMMENTS I, IS Type Input Buffer Low Input Level VILI High Input Level VIHI 2.0 IIL -10 +10 uA VHYSI 250 350 mV 0.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Table 5.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet CAPACITANCE TA = 25°C; fc = 1MHz; VDD18, VDDPLL = 1.8V Table 5.2 Pin Capacitance LIMITS PARAMETER Clock Input Capacitance Input Capacitance Output Capacitance SMSC USB2512i SYMBOL MIN TYP MAX UNIT TEST CONDITION CXTAL 2 pF All pins except USB pins (and pins under test tied to AC ground) CIN 10 pF COUT 20 pF 35 DATASHEET Revision 1.
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Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller Datasheet Chapter 6 AC Specifications 6.1 Oscillator/Clock Crystal: Parallel Resonant, Fundamental Mode, 24 MHz ±350ppm. External Clock: 50% Duty cycle ± 10%, 24 MHz ± 350ppm, Jitter < 100ps rms. XTAL1 (C S1 = C B + C XTAL ) C1 Crystal 1Meg CL C2 XTAL2 (C S2 = C B + C XTAL ) Figure 6.1 Typical Crystal Circuit Note: CB equals total board/trace capacitance. (C1 + CS1) x (C2 + CS2) = CL (C1 + CS1 + C2 + CS2) Figure 6.
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Figure 7.1 36-Pin QFN, 6x6mm Body, 0.5mm Pitch Revision 1.