The TUSB2046x is a 3.3-V CMOS hub device that provides one upstream port and fourdownstream ports in compliance with the Universal Serial Bus (USB) specification as a full-speedhub. Because this device is implemented with a digital state machine instead of a microcontroller,no firmwareprogramming is required. Fully compliant USB transceivers are integrated into the ASIC forall upstream and downstream ports. The downstream ports support full-speed and low-speed devices byautomatically setting the slew rate according to the speed of the device attached to the ports. Theconfiguration of the BUSPWR pin selects either the bus-powered or the self-powered mode.
Configuring the GANGED input determines the power switching and overcurrent detectionmodes for the downstream ports. If GANGED is high, all OVRCUR pins have noisefiltering for increased immunity to voltage spikes.
Feature
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 PackageWith a 0.5-mm Pin Pitch
3.3-V Low-Power ASIC Logic
Integrated USB Transceivers
State Machine Implementation Requires No Firmware Programming
One Upstream Port and Four Downstream Ports
All Downstream Ports Support Full-Speed and Low-Speed Operations
Two Power 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 SerialEEPROM
3-State EEPROM Interface Allows EEPROM Sharing
Push-Pull Outputs for OVRCUR Provides Immunity to VoltageSpikes
Package Pinout Allows 2-Layer PCB
Low EMI Emission Achieved by a 6-MHz Crystal Input
Migrated From Proven TUSB2040 Hub
Lower Cost Than the TUSB2040 Hub
Enhanced System ESD Performance
No Special Driver Requirements;Works Seamlessly With Any Operating System With USB Stack Support
Supports 6-MHz Operation Through a Crystal Input or a 48-MHzInput Clock
(1)JEDEC descriptor S-PQFP-G for low-profile quad flatpack (LQFP).
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Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
