From Microchip the USB5734 is a 3.0 compliant （also known as USB 3.1 Gen 1） and supports all the defined USB speeds up to the 5 Gbps SuperSpeed （SS） data rate on all enabled downstream ports
The device integrates a USB 2.0 controller to decouple SuperSpeed data from slower USB 2.0 traffic to avoid bottlenecks slower USB 2.0 traffic can create
The USB5734 integrates functions that would typically be associated with a separate MCU or processor; as such Microchip classifies this device as a Smart Hub
For example the device can communicate to peripherals via I2C, SPI, GPIOs or UART in addition to USB
Also a downstream device can take control of the host system by swapping roles to become the host port, with the Smart Hub switching between two different hosts if required
特長
Four downstream USB 3.0 （USB 3.1 Gen1）/2.0 ports Integrated Hub Feature Controller （HFC） enabling I/O bridging and FlexConnect I/O Bridging： Host communication to external peripherals - USB to I2C/UART/SPI/GPIO FlexConnect： Host port swapping and switching to downstream devices Battery Charging： USB-IF revision 1.2 support on downstream ports （DCP, CDP, SDP） Simultaneous data transfer for 2500 mA of high speed charging Port Configuration Straps： Predefined configuration of port settings Battery Charging, Non-Removable, Disable Application Straps： Predefined configuration of GPIOs for specific Use Cases including Mixed Mode, FlexConnect Mode, Port Speed mode, Port BC Mode and UART Mode
ProTouch2： Configuration tool to enable enhanced OEM configuration options through either One-Time Programmable （OTP） （8Kbit） or external SPI ROM Manufacturing line programming tool and field update capabilities USB Link Power Management （LPM） support IETF RFC 4122 compliant 128-bit UUID Compatible with MicrosoftR WindowsR 8/8.1 and other major OS s
