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TUSB2036 Datasheet PDF

Part Series:TUSB2036 Series
Description:2/3Port Hub for USB w/Optional Serial EEPROM Interface
Document:TUSB2036VFRG4 Datasheet PDF (44 Pages)

TUSB2036 Datasheet PDF

27 Pages
TI
2/3Port Hub for USB w/Optional Serial EEPROM Interface

TUSB2036 - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Case/Package
LQFP-32
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TUSB2036 - TI Function Overview

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 lowspeed 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. 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.
The EXTMEM (pin 26) enables or disables the optional EEPROM interface. When EXTMEM is 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.
Fully Compliant With the USB Specification as a
Full-Speed Hub: TID #30220242
Integrated USB Transceivers
3.3-V Low-Power ASIC Logic
One Upstream Port and 2 or 3 Programmable
Downstream Ports
Total Number of Ports (2 or 3) Selected by
Input Pin
Total Number of Permanently Connected Ports
Is Selected by 2 Input Pins
Two Power Source Modes
Self-Powered Mode
Bus-Powered Mode
All Downstream Ports Support Full-Speed and
Low-Speed Operations
Power Switching and Overcurrent Reporting Is
Provided Ganged or Per Port
Supports Suspend and Resume Operations
Suspend Status Pin Available for External Logic
Power Down
Supports Custom 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
Supports 6-MHz Operation Through a Crystal
Input or a 48-MHz Input Clock
Output Pin Available to Disable External Pullup
Resister on DP0 for 3 ms After Reset or After
Change on BUSPWR and Enable Easy
Implementation of Onboard Bus/Self-Power
Dynamic Switching Circuitry
No Special Driver Requirements; Works
Seamlessly With Any Operating System With USB
Stack Support
Available in 32-Pin HLQFP Package With a 0.8-
mm Pin Pitch (JEDEC – S-PQFP-G For Low-
Profile Quad Flat Pack)
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