 Compliant with USB 3.1 Gen 1 Specification
1 CDP, charging downstream port, the Battery Charging Rev.1.2-compliant USB port that does data communication and charges device up to 1.5A.
2 DCP, dedicated charging port, the Battery Charging Rev.1.2-compliant USB port that only charges devices up to 1.5A, similar to wall chargers.
- Upstream port supports SuperSpeed (SS), HighSpeed (HS) and FullSpeed (FS) traffic
- Downstream ports support SS, HS, FS, and LowSpeed (LS) traffic
- 1 control pipe and 1 interrupt pipe
- Backward compatible to USB specification Revision 2.0/1.1
 Native USB Type-C support in GL3523-S series
- Compliant with USB Type-C Cable and Connection Specification Revision 1.0
- Featuring USB Type-C functions
- Detecting flip-able/reversible plugging
- Discovering/configuring VBUS
- Supporting USB Type-C Current modes , including USB Default, 1.5A@5V, 3A@5V
- Configuring/Supporting VCONN Power
 Featuring fast-charging on all downstream ports and upstream port
- Compliant with USB Battery Charging Revision v1.2, supporting CDP, DCP, and ACA-Dock
- Downstream ports can be turned from a Standard Downstream Port (SDP) into Charging Downstream Port (CDP) or Dedicated Charging Port (DCP)
- Downstream devices can be charged while upstream VBUS is not present, which can be applied on wall charger applications
- Upstream port is capable of charging and data communicating simultaneously for portable devices supporting ACA-Dock or proprietary charging protocols
- Supporting Apple 1A/2.1A/2.4A and Samsung Galaxy devices fast-charging
 On-chip 8-bit micro-processor
- RISC-like architecture
- USB optimized instruction set
- 1 cycle instruction execution (maximum)
- Performance: 12 MIPS @ 12.5MHz (maximum)
- With 256-byte RAM, 20K-byte internal ROM, and 24K-byte SRAM
 Multiple Transaction Translator (TT) architecture
- Providing dedicated TT control logics for each downstream port
- Superior performance when multiple FS devices operate concurrently
 Integrated USB transceiver
- Improving output drivers with slew-rate control for EMI reduction
- Internal power-fail detection for ESD recovery
 Advanced power management and low power consumption
- Supporting USB 3.1 U0/U1/U2/U3 power management states
- Supporting USB Link Power Management (LPM) L0/L1/L2
- Supporting individual/gang mode over-current detection for all downstream ports
- Supporting both low/high-enabled power switches
- Patented Smart Power Management
 Configurable settings by firmware in SPI flash
- Configurable charging port
- Configurable 4/3/2 downstream ports, downstream port can be disabled/enabled by each specific port for USB3.1/USB2.0
- Configurable Upstream and Downstream Ports in GL3523-S
- Supporting multiple upstream ports in GL3253-S OV3S1 and OV5S1 packages
- Supporting full in-system programming firmware upgrade by SPI-flash and configuration by EEPROM
- Supporting compound-device (non-removable setting on downstream ports)
- Supporting customization VID/PID
 Flexible design
- Supporting Poly-fuse/Power-switch
- Automatic switching between self-powered and bus-powered modes
- Supporting electrical tuning for each specific port
- Supporting programmable breathing LED
- Supporting register setting by firmware
- Supporting vendor command and SMBUS
- Allow downstream ports to connect up to 8 devices, 4 x USB3.1 non-removable devices with 4 x USB2.0 non-removable devices or exposed ports
 Low BOM cost
- Single external 25 MHz crystal / Oscillator clock input
- Built-in upstream port 1.5KΩ pull-up and downstream port 15KΩ pull-down resistors
- Built-in 5 to 3.3V and 5 to 1.2V regulator
 Different package types available for various applications
 Applications
- Standalone USB hub/Docking station
- Tablet/Ultrabook/NB
- Motherboard
- Monitor built-in hub, GPIOs can be programmed as I2C interface to easily update scalar firmware through USB interface
- TV built-in hub
- Compound device, such as hub-reader application
- USB wall charger
- Other consumer electronics
- Customized applications
 Dynamically disable/enable ports
 GPIO signaling of ambient light sensor or rotation/position sensor