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.
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 Microsoft® Windows® 8/8.1 and other major OSs
