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General Description

The Microchip USB5816C hub is a low-power, OEM configurable, USB 3.2 Gen 1 hub controller with 6 downstream

ports and advanced features for embedded USB applications. The USB5816C is fully compliant with the Universal Serial

Bus Revision 3.1 Specification and USB 2.0 Link Power Management Addendum. The USB5816C supports 5 Gbps

SuperSpeed (SS), 480 Mbps Hi-Speed (HS), 12 Mbps Full-Speed (FS), and 1.5 Mbps Low-Speed (LS) USB downstream

devices on all enabled downstream ports.

The USB5816C supports the legacy USB speeds (HS/FS/LS) through a dedicated USB 2.0 hub controller that is the

culmination of five generations of Microchip hub controller design and experience with proven reliability, interoperability,

and device compatibility. The SuperSpeed hub controller operates in parallel with the USB 2.0 hub controller, decoupling

the 5 Gbps SS data transfers from bottlenecks due to the slower USB 2.0 traffic.

The USB5816C hub feature controller enables OEMs to configure their system using “Configuration Straps.” These

straps simplify the configuration process, assigning default values to USB 3.2 Gen 1 ports and GPIOs. OEMs can disable

ports, enable battery charging, and define GPIO functions as default assignments on power-up, removing the need

for OTP or external SPI ROM.

The USB5816C supports downstream battery charging via the integrated battery charger detection circuitry, which supports

the USB-IF Battery Charging (BC1.2) detection method and most Apple devices. The USB5816C provides the

battery charging handshake and supports the following USB-IF BC1.2 charging profiles:

? DCP: Dedicated Charging Port (Power brick with no data)

? CDP: Charging Downstream Port (1.5A with data)

? SDP: Standard Downstream Port (0.5A with data)

? Custom profiles loaded via SMBus or OTP

Additionally, the USB5816C includes many powerful and unique features such as:

The Hub Feature Controller, which provides an internal USB device dedicated for use as a USB to I2C/UART/SPI/

GPIO interface, allowing external circuits or devices to be monitored, controlled, or configured via the USB interface.

PortSwap, which adds per-port programmability to USB differential-pair pin locations. PortSwap allows direct alignment

of USB signals (D+/D-) to connectors to avoid uneven trace length or crossing of the USB differential signals on the

PCB.

PHYBoost, which provides programmable levels of Hi-Speed USB signal drive strength

in the downstream port transceivers. PHYBoost attempts to restore USB signal integrity

in a compromised system environment. The graphic on the right shows an example of

Hi-Speed USB eye diagrams before and after PHYBoost signal integrity restoration. in

a compromised system environment.

VariSense, which controls the USB receiver sensitivity enabling programmable levels of USB signal receive sensitivity.

This capability allows operation in a sub-optimal system environment, such as when a captive USB cable is used.

Port Split, which allows for the USB3.1 Gen1 and USB2.0 portions of downstream ports 4 and 5to operate independently

and enumerate two separate devices in parallel in special applications.

USB Power Delivery Billboard Device, which allows an internal device to enumerate as a Billboard class device when

a Power Delivery Alternate Mode negotiation has failed. The Billboard device will enumerate temporarily to the host PC

when a failure occurs, as indicated by a digital signal from an external Power Delivery controller.

The USB5816C can be configured for operation through internal default settings. Custom OEM configurations are supported

through external SPI ROM or OTP ROM. All port control signal pins are under firmware control in order to allow

for maximum operational flexibility, and are available as GPIOs for customer specific use.

The USB5816C is available in commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges. An internal

block diagram of the USB5816C is shown in Figure 2-1.

Highlights

? USB Hub Feature Controller IC Hub with:

- 1 USB 3.1 Gen 1 USB Type-C? downstream port

- 4 USB 3.1 Gen 1 legacy downstream ports

- 1 USB 2.0 downstream port

- Legacy upstream port

? USB-IF Battery Charger revision 1.2 support on

up & downstream ports (DCP, CDP, SDP)

? Internal Hub Feature Controller device enables:

- USB to I2C/SPI/GPIO bridge endpoint support

- USB to internal hub register write and read

? USB Link Power Management (LPM) support

? Enhanced OEM configuration options available

through either OTP or SPI ROM

? (TID 963) USB-IF certified, supporting latest

Engineering Change Notices for compliance with

USB-IF logo testing for new USB Type-C?

industry initiative (Revision C or newer only)

- Header Packet Timer (TD7.9, TD7.11, TD7.26)

- Power Management Timer (TD7.18, TD7.20, TD7.23)

- Unacknowledged Connect and Remote

Wake Test Failure (TD10.25)

? Available in 100-pin (12mm x 12mm) VQFN

RoHS compliant package

? Commercial and industrial grade temperature support

Target Applications

? Standalone USB Hubs

? Laptop Docks

? PC Motherboards

? PC Monitor Docks

? Multi-function USB 3.2 Gen 1 Peripherals