USB3803CI-1-GL-TR

The USB3803 is a low-power, USB 2.0 hub controller with three downstream ports. The USB3803 can attach to an upstream port as a full-speed hub or as a full-/hi-speed hub and supports low-speed, full-speed, and hi-speed (if operating as a hi-speed hub) downstream devices on all of the enabled downstream ports. The USB3803 has been specifically optimized for mobile embedded applications. The pin-count has been reduced by optimizing the USB3803 for mobile battery-powered embedded systems where power consumption, small package size, minimal BOM, and battery charger detection capabilities are critical design requirements. Standby mode and Bypass mode power has been minimized. Instead of a dedicated crystal, reference clock inputs are aligned to mobile applications. Flexible integrated power regulators ease integration into battery powered devices. Automatic battery charger detection is available on the upstream port. All required resistors on the USB ports are integrated into the hub. This includes all series termination resistors on D+ and D– pins and all required pull-down and pull-up resistors on D+ and D– pins. The integrated USB switch allows USB3803 to bypass the USB Hub and directly connect the upstream and Port 3 downstream USB port for operational modes that do not require Hi-Speed media transfers. The bypass switch enables multiple connectivity options to the USB port while preserving the high speed signal quality in USB Hub Mode. The USB3803 integrated battery charger detection circuitry supports USB-IF 1.1 charger detection methods. These circuits are used to detect the attachment and type of a USB Charger and provide an interrupt output to the portable device indicating that charger information is available to be read from USB3803 status registers via the serial interface. The USB3803 includes programmable features such as: MultiTRAKTM Technology which utilizes a dedicated Transaction Translator (TT) per port to maintain consistent fullspeed

• Integrated USB 2.0 Compatible 3-Port Hub.
• Advanced power saving features - 1 µA Typical Standby Current - Port goes into power saving state when no devices are connected downstream - Port is shutdown when port is disabled. - Digital core shut down in Bypass and Standby Mode
• Provides USB Battery Charger Detection for: - USB-IF Battery Charging 1.1 compliant Dedicated Charging Ports (DCP) - USB-IF Battery Charging 1.1 compliant Charging Downstream Port (CDP) - Standard Downstream Port (SDP); ie. USB host or downstream hub port - Downstream Hub Ports Support USB-IF Battery Charging 1.1 as Charging Downstream Port (CDP)
• Supports either Single-TT or Multi-TT configurations for Full-Speed and Low-Speed connections (when connected to a High-Speed host).
• Bypass Switch for low power single port operation - Battery charging detection using a PMIC - Stereo and mono/mic audio - USB1.1 Data
• Enhanced configuration options available through serial I2C S