EVB-USB2524

EVB-USB2524 Datasheet

EVB-USB2524 Evaluation Board Revision B1

Part	Datasheet
EVB-USB2524	EVB-USB2524 (pdf)

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Copyright 2006 SMSC or its subsidiaries. All rights reserved. The information contained herein is confidential and proprietary to SMSC, shall be used solely in accordance with the agreement pursuant to which it is provided, and shall not be reproduced or disclosed to others without the prior written consent of SMSC. Although the information is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to this document and to specifications and product descriptions at any time without notice. Neither the provision of this information nor the sale of the described semiconductor devices conveys any licenses under any patent rights or other intellectual property rights of SMSC or others. The product may contain design defects or errors known as anomalies, including but not necessarily limited to any which may be identified in this document, which may cause the product to deviate from published specifications. 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 will be fully at the risk of the customer. SMSC is a registered trademark of Standard Microsystems Corporation “SMSC” . SMSC EVB-USB2524 The SMSC USB2524 MultiSwitchTM is an USB2.0 compliant switching hub with two up-stream ports and four down-stream ports. The EVB-USB2524 Evaluation Board demonstrates a stand alone application for the switching hub with all the features listed below. Each of the down stream ports can individually be assigned to up-stream port 1 or up-stream port The port assignment can be dynamically changed with user accessible switches individually for each port. - Operates from a single voltage +5.0V, regulated 'wall wart' external power supply - Low Cost 2-Layer Design - Self-powered operation - Multi-TT enabled - Supports four program selection options Internal defaults, EEPROM default , SMBus, Strapping options - Serial EEPROM for configuration in a socket for easy programming - Single Onboard +3.3V Regulator - LED status modes supported USB, BASIC, and DUAL LED - Single Crystal Clock Source - Individual port over-current sensing - Individual port power control - High-speed, Full-speed, and Low-speed capable - Port Assignment interface - Port OCS/Port Power Control interface - Optional ESD and EMI footprints are provided The EVB-USB2524 is a demonstration and evaluation platform featuring the USB2524 MultiSwitchTM 4-port USB2.0 Switching Hub. It is designed to robustly demonstrate this unique device's features using a low-cost PCB implementation. The EVB-USB2524 features an on-board EEPROM for VID/PID/DID and configuration strings, such as switching options, LED status options, and non-removable or disabled configuration for each port. The manufacturer, product and serial strings for the hub can be changed in the EEPROM as well. The EVB-USB2524 can also be configured through changing population of resistors to access internal “strapping options”, without using the EEPROM. The schematic for the EVB-USB2524 indicates which components are required for each configuration option. SECURITY LEVEL SMSC EVB-USB2524 2 Getting Started Port Assignment The EVB-USB2524 port assignments are selected by four level switches SW1 to SW4 located in the upper right-hand corner. When only one up-stream port, “US 1” or “US 2” is connected to an operational host, all down-stream ports will be assigned to that host. In this case the switches do not have any effect. When both up-stream ports are connected to operational hosts “US 2” is selected with switch in the bottom position and “US 1” with the switch in the top position. Figure shows the switches in detail. Down-stream ports are numbered 1 through The switches are labeled accordingly with the left-most switch controlling down-stream port 1 and the right-most switch close to the supply connector controlling down-stream port Figure SMSC EVB-USB2524 SECURITY LEVEL 3 Hardware Configuration The EVB-USB2524 has two sets of resistor jumpers. The first set selects the USB2524 configuration internal defaults, SMBus slave or EEPROM configuration. The second set enables dual LED mode. USB2524 Configuration Selection The USB2524 has three configuration pins CFG_SEL[2:0], that determines the operating mode of the USB2524. The selection of a configuration is done with six resistor combinations shown in Table Only three resistors are installed to either pull up or pull down each configuration pin. Figure shows a section of the PCB for the EVBUSB2524 where the resistors are located. Table Resistor selection for USB2524 configuration CFG_SEL2 CFG_SEL1 CFG_SEL0 Configuration Internal Default Configuration - 3-wire port configuration - Strap options enabled - USB LED mode SMBus Slave Configuration Internal Default Configuration - 4-wire port configuration - Strap options enabled - USB LED mode EERPOM Configuration Note This is default if no jumpers are populated on J1 Internal Default Configuration - 4-wire edge port configuration - Strap options enabled - Single mode LED

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Copyright 2006 SMSC or its subsidiaries. All rights reserved.

The information contained herein is confidential and proprietary to SMSC, shall be used solely in accordance with the agreement pursuant to which it is provided, and shall not be reproduced or disclosed to others without the prior written consent of SMSC. Although the information is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to this document and to specifications and product descriptions at any time without notice. Neither the provision of this information nor the sale of the described semiconductor devices conveys any licenses under any patent rights or other intellectual property rights of SMSC or others. The product may contain design defects or errors known as anomalies, including but not necessarily limited to any which may be identified in this document, which may cause the product to deviate from published specifications. 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 will be fully at the risk of the customer. SMSC is a registered trademark of Standard Microsystems Corporation “SMSC” .

SMSC EVB-USB2524

The SMSC USB2524 MultiSwitchTM is an USB2.0 compliant switching hub with two up-stream ports and four down-stream ports. The EVB-USB2524 Evaluation Board demonstrates a stand alone application for the switching hub with all the features listed below. Each of the down stream ports can individually be assigned to up-stream port 1 or up-stream port The port assignment can be dynamically changed with user accessible switches individually for each port.
- Operates from a single voltage +5.0V, regulated 'wall wart' external power supply - Low Cost 2-Layer Design - Self-powered operation - Multi-TT enabled - Supports four program selection options Internal defaults, EEPROM default , SMBus, Strapping
options - Serial EEPROM for configuration in a socket for easy programming - Single Onboard +3.3V Regulator - LED status modes supported USB, BASIC, and DUAL LED - Single Crystal Clock Source - Individual port over-current sensing - Individual port power control - High-speed, Full-speed, and Low-speed capable - Port Assignment interface - Port OCS/Port Power Control interface - Optional ESD and EMI footprints are provided

The EVB-USB2524 is a demonstration and evaluation platform featuring the USB2524 MultiSwitchTM 4-port USB2.0 Switching Hub. It is designed to robustly demonstrate this unique device's features using a low-cost PCB implementation.

The EVB-USB2524 features an on-board EEPROM for VID/PID/DID and configuration strings, such as switching options, LED status options, and non-removable or disabled configuration for each port. The manufacturer, product and serial strings for the hub can be changed in the EEPROM as well.

The EVB-USB2524 can also be configured through changing population of resistors to access internal “strapping options”, without using the EEPROM.

The schematic for the EVB-USB2524 indicates which components are required for each configuration option.

SECURITY LEVEL

SMSC EVB-USB2524
2 Getting Started

Port Assignment

The EVB-USB2524 port assignments are selected by four level switches SW1 to SW4 located in the upper right-hand corner. When only one up-stream port, “US 1” or “US 2” is connected to an operational host, all down-stream ports will be assigned to that host. In this case the switches do not have any effect. When both up-stream ports are connected to operational hosts “US 2” is selected with switch in the bottom position and “US 1” with the switch in the top position. Figure shows the switches in detail.

Down-stream ports are numbered 1 through The switches are labeled accordingly with the left-most switch controlling down-stream port 1 and the right-most switch close to the supply connector controlling down-stream port

Figure

SMSC EVB-USB2524

SECURITY LEVEL
3 Hardware Configuration

The EVB-USB2524 has two sets of resistor jumpers. The first set selects the USB2524 configuration internal defaults, SMBus slave or EEPROM configuration. The second set enables dual LED mode.

USB2524 Configuration Selection

The USB2524 has three configuration pins CFG_SEL[2:0], that determines the operating mode of the USB2524. The selection of a configuration is done with six resistor combinations shown in Table Only three resistors are installed to either pull up or pull down each configuration pin. Figure shows a section of the PCB for the EVBUSB2524 where the resistors are located.

Table Resistor selection for USB2524 configuration

CFG_SEL2 CFG_SEL1 CFG_SEL0

Configuration

Internal Default Configuration
- 3-wire port configuration
- Strap options enabled
- USB LED mode

SMBus Slave Configuration

Internal Default Configuration
- 4-wire port configuration
- Strap options enabled
- USB LED mode

EERPOM Configuration

Note This is default if no jumpers are populated on J1

Internal Default Configuration
- 4-wire edge port configuration
- Strap options enabled
- Single mode LED

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived EVB-USB2524 Datasheet file may be downloaded here without warranties.

Datasheet ID: EVB-USB2524 648109