RTS5411S-GR

RTS5411S is an advanced USB3.1 4-port HUB controller, which integrates USB3.1 and USB2.0 Transceivers, MCU, SIE, regulator and charger circuits into a single chip. That could dramatically reduce the system BOM cost. With high compatibility, RTS5411S is fully backward compatible to USB2.0 and USB1.1 specification which can be operated in Super-Speed, High-Speed, Full-Speed and Low-Speed. RTS5411S provides the battery charging function for each downstream port. Besides complies with USB Battery Charging specification rev1.2, RTS5411S also provides charging function for various portable devices. Not only downstream ports can be used as charger, RTS5411S's upstream port also supports two special functions regarding the BC1.2 specification. The first one charger function of RTS5411S's upstream port is called "ACA- dock" mode. When a device which complies with ACA- dock of the BC1.2 specification is put into an ACA- Dock, it would act as a host to various USB peripherals, such as a hub, keyboard, mouse, printer, etc. However, while in ACA- dock, the device should also be able to charge at the same time. The second charger function of the RTS5411S's upstream port is called "charger detection" function. RTS5411S can recognize the BC1.2 charger mode which attached to the upstream port, including CDP, DCP and SDP. RTS5411S supports an auto detection- switch mechanism to charge portable device in suitable mode. RTS5411S can update its firmware with an external SPI flash through flexible ISP channel. With the ISP function, it can configure lots of features and settings by the external SPI flash. The ISP function is easy to complete with just one USB cable and RTS5411S's download tool. The features and settings of RTS5411S can also be configured by the SMBUS interface or internal eFuse. RTS5411S has various interfaces to communicate with other components, such as GPIO, I2C, SMBUS. It's flexible for extending varieties of applications by using these interfaces. Moreover, RTS5411S supports a special power saving function named deink mode. It can save more power for the system when there is no device connected to the hub even though the upstream port of the RTS5411S is attached to the downstream port of the behind host or hub.

Key features

• Compliant with Universal Serial Bus 3.1 Specification Revision 1.0
• 4 downstream ports for super- speed, high- speed, full- speed and low- speed traffic.
• Backward compatible with USB specification Revision 2.0, 1.1 and 1.0.
• MTT(Multiple Transaction Translator)
• One TT for each downstream port.
• Better data throughput when multiple downstream ports act on FS concurrently.
• Support SMBUS to customize configurations
• SMBUS address is configurable by external SPI Flash or internal eFuse.
• Support I2C to configure other chips on the same platform.
• Compliant with USB Battery Charging Specification Revision 1.2 and other portable devices
• DCP Mode of BC 1.2.
• CDP Mode of BC 1.2.
• ACA- Dock functions of BC 1.2.
• Charger detection functions for upstream port's charger which complies with BC1.2.
• D+/D- Divider Modes 2.0V/2.7V, 2.7/2.0V and 2.7/2.7V.
• D+/D- 1.2V Mode.
• The Up Stream Port of the RTS5411S can detect the DSP it is connected to is a SDP, CDP, or DCP.
• When the RTS5411S is connected to a charging port, it is allowed to draw more current from the DSP.