TUSB2036 Series

2/3-port 12-Mbps USB full-speed hub with optional serial EEPROM interface

Catalog

2/3-port 12-Mbps USB full-speed hub with optional serial EEPROM interface

Part	Package / Case	Function	Protocol	Standards	Interface	Operating Temperature [Max]	Supplier Device Package	Current - Supply	Voltage - Supply [Max]	Voltage - Supply [Min]
Texas Instruments TUSB2036VFRG4	32-LQFP	Hub Controller	USB	USB 2.0	USB	70 °C	32-LQFP (7x7)	40 mA	3.6 V	3 V
Texas Instruments TUSB2036VFG4	32-LQFP	Hub Controller	USB	USB 2.0	USB	70 °C	32-LQFP (7x7)	40 mA	3.6 V	3 V
Texas Instruments TUSB2036VF	32-LQFP	Hub Controller	USB	USB 2.0	USB	70 °C	32-LQFP (7x7)	40 mA	3.6 V	3 V

Catalog

2/3-port 12-Mbps USB full-speed hub with optional serial EEPROM interface

Key Features

• Fully Compliant With the USB Specification as a Full-Speed Hub: TID #30220242Integrated USB Transceivers3.3-V Low-Power ASIC LogicOne Upstream Port and 2 or 3 Programmable Downstream PortsTotal Number of Ports (2 or 3) Selected by Input PinTotal Number of Permanently Connected Ports Is Selected by 2 Input PinsTwo Power Source ModesSelf-Powered ModeBus-Powered ModeAll Downstream Ports Support Full-Speed and Low-Speed OperationsPower Switching and Overcurrent Reporting Is Provided Ganged or Per PortSupports Suspend and Resume OperationsSuspend Status Pin Available for External Logic Power DownSupports Custom Vendor ID and Product ID With External Serial EEPROM3-State EEPROM Interface Allows EEPROM SharingPush-Pull Outputs forPWRONEliminate the Need for External Pullup ResistorsNoise Filtering onOVRCURProvides Immunity to Voltage SpikesSupports 6-MHz Operation Through a Crystal Input or a 48-MHz Input ClockOutput Pin Available to Disable External Pullup Resister on DP0 for 3 ms After Reset or After Change onBUSPWRand Enable Easy Implementation of Onboard Bus/Self-Power Dynamic Switching CircuitryNo Special Driver Requirements; Works Seamlessly With Any Operating System With USB Stack SupportAvailable in 32-Pin HLQFP Package With a 0.8-mm Pin Pitch (JEDEC − S-PQFP-G For Low-Profile Quad Flat Pack)Fully Compliant With the USB Specification as a Full-Speed Hub: TID #30220242Integrated USB Transceivers3.3-V Low-Power ASIC LogicOne Upstream Port and 2 or 3 Programmable Downstream PortsTotal Number of Ports (2 or 3) Selected by Input PinTotal Number of Permanently Connected Ports Is Selected by 2 Input PinsTwo Power Source ModesSelf-Powered ModeBus-Powered ModeAll Downstream Ports Support Full-Speed and Low-Speed OperationsPower Switching and Overcurrent Reporting Is Provided Ganged or Per PortSupports Suspend and Resume OperationsSuspend Status Pin Available for External Logic Power DownSupports Custom Vendor ID and Product ID With External Serial EEPROM3-State EEPROM Interface Allows EEPROM SharingPush-Pull Outputs forPWRONEliminate the Need for External Pullup ResistorsNoise Filtering onOVRCURProvides Immunity to Voltage SpikesSupports 6-MHz Operation Through a Crystal Input or a 48-MHz Input ClockOutput Pin Available to Disable External Pullup Resister on DP0 for 3 ms After Reset or After Change onBUSPWRand Enable Easy Implementation of Onboard Bus/Self-Power Dynamic Switching CircuitryNo Special Driver Requirements; Works Seamlessly With Any Operating System With USB Stack SupportAvailable in 32-Pin HLQFP Package With a 0.8-mm Pin Pitch (JEDEC − S-PQFP-G For Low-Profile Quad Flat Pack)

Description

The TUSB2036 hub is a 3.3-V CMOS device that provides up to three downstream ports in compliance with the USB 2.0 specification. 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 both 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 theBUSPWRpin selects either the bus-powered or the self-powered mode. The introduction of the DP0 pullup resistor disable pin, DP0PUR, makes it much easier to implement an onboard bus/self-power dynamic-switching circuitry. With the new function pin, the end-equipment vendor can reduce the total board cost while adding additional product value. TheEXTMEM(pin 26) enables or disables the optional EEPROM interface. WhenEXTMEMis high, the vendor and product IDs (VID and PID) use defaults, such that the message displayed during enumeration is General Purpose USB Hub. The TUSB2036 supports both bus-powered and self-powered modes. External power-management devices, such as the TPS2044, are required to control the 5-V power source switching (on/off) to the downstream ports and to detect an overcurrent condition from the downstream ports individually or ganged. An individually port power controlled hub switches power on or off to each downstream port as requested by the USB host. Also when an individually port power controlled hub senses an over-current event, only power to the affected downstream port will be switched off. A ganged hub switches on power to all its downstream ports when power is required to be on for any port. The power to the downstream ports is not switched off unless all ports are in a state that allows power to be removed. Also when a ganged hub senses an over-current event, power to all downstream ports will be switched off. The logic level of the MODE pin controls the selection of a crystal input to drive an internal oscillator or an external clock source. The TUSB2036 hub is a 3.3-V CMOS device that provides up to three downstream ports in compliance with the USB 2.0 specification. 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 both 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 theBUSPWRpin selects either the bus-powered or the self-powered mode. The introduction of the DP0 pullup resistor disable pin, DP0PUR, makes it much easier to implement an onboard bus/self-power dynamic-switching circuitry. With the new function pin, the end-equipment vendor can reduce the total board cost while adding additional product value. TheEXTMEM(pin 26) enables or disables the optional EEPROM interface. WhenEXTMEMis high, the vendor and product IDs (VID and PID) use defaults, such that the message displayed during enumeration is General Purpose USB Hub. The TUSB2036 supports both bus-powered and self-powered modes. External power-management devices, such as the TPS2044, are required to control the 5-V power source switching (on/off) to the downstream ports and to detect an overcurrent condition from the downstream ports individually or ganged. An individually port power controlled hub switches power on or off to each downstream port as requested by the USB host. Also when an individually port power controlled hub senses an over-current event, only power to the affected downstream port will be switched off. A ganged hub switches on power to all its downstream ports when power is required to be on for any port. The power to the downstream ports is not switched off unless all ports are in a state that allows power to be removed. Also when a ganged hub senses an over-current event, power to all downstream ports will be switched off. The logic level of the MODE pin controls the selection of a crystal input to drive an internal oscillator or an external clock source.