TUSB2046BIRHBR 4-Port USB 2.0 Hub Controller with 12Mbps/1.5Mbps Support Integrated Transceivers 3.3V Operation Low EMI Power Saving Mode & Industrial Temp Range (-40°C to 85°C)

TUSB2046BIRHBR 4-Port USB 2.0 Hub Controller with 12Mbps/1.5Mbps Support Integrated Transceivers 3.3V Operation Low EMI Power Saving Mode & Industrial Temp Range (-40°C to 85°C)

 Features

• Fully Compliant With the USB Specification as a Full-Speed Hub: TID #30220231

• 32-Pin LQFP (1) Package With a 0.8-mm Terminal Pitch or QFN Package With a 0.5-mm Pin Pitch

• 3.3-V Low-Power ASIC Logic

• Integrated USB Transceivers

• State Machine Implementation Requires No Firmware Programming

• OneUpstream Port and Four Downstream Ports

• All Downstream Ports Support Full-Speed and Low-Speed Operations

• TwoPower Source Modes– Self-Powered Mode– Bus-Powered Mode

• Power Switching and Overcurrent Reporting Is Provided Ganged or Per Port

• Supports Suspend and Resume Operations

• Supports Programmable Vendor ID and Product ID With External Serial EEPROM

• 3-State EEPROM Interface Allows EEPROM Sharing

• Push-Pull Outputs for PWRON Eliminate the Need for External Pullup Resistors

• Noise Filtering on OVRCUR Provides Immunity to Voltage Spikes

• Package Pinout Allows 2-Layer PCB

• LowEMIEmission Achieved by a 6-MHz Crystal Input

• Migrated From Proven TUSB2040 Hub

• Lower Cost Than the TUSB2040 Hub

• Enhanced System ESD Performance

• NoSpecial Driver Requirements; Works Seamlessly With Any Operating System With USB Stack Support

• Supports 6-MHz Operation Through a Crystal Input or a 48-MHz Input Clock

Applications

• Computer Systems

• Docking Stations

Description

The TUSB2046x is a 3.3-V CMOS hub device that provides one upstream port and four downstream ports in compliance with the Universal Serial Bus (USB) specification as a full-speed hub. Because this device is implemented with a digital state machine instead of a microcontroller, no firmware programming is required. Fully compliant USB transceivers are integrated into the ASIC for all upstream and downstream ports. The downstream ports support full-speed and low-speed devices by automatically setting the slew rate according to the speed of the device attached to the ports. The configuration of the BUSPWR pin selects either the bus-powered or the self-powered mode.

Configuring the GANGED input determines the power switching and overcurrent detection modes for the downstream ports. If GANGED is high, all PWRON outputs switch together and if any OVRCUR is activated, all ports transition to the power-off state. If GANGED is low, the PWRON outputs and OVRCUR inputs operate on a per-port basis.

INFORMATION

Drawing

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