GL852GT中文资料USB 2.0 Industrial MTT Hub Controller数据手册Genesys规格书

描述 Description

GL852GT is Genesys Logic’s premium 4-port hub solution which fully complies with Universal Serial Bus Specification Revision 2.0, and it especially targets for special applications which require operating temperature -40°C to 85°C. GL852GT implements multiple TT* (Note1) architecture that provide dedicated TT* to each downstream (DS) ports, which guarantee Full-Speed(FS) data passing bandwidth when multiple FS device perform heavy loading operations. The controller inherits Genesys Logic’s cutting edge technology on cost and power efficient serial interface design. GL852GT has proven compatibility, lower power consumption figure and better cost structure above all USB2.0 hub solutions worldwide.

GL852GT implements multiple hub configuration features onto internal mask ROM, which traditionally requires one external EEPROM. The microprocessor detects general purpose I/O (GPIO) status during the initial stage to configure hub settings such as (1) number of DSport, (2) declare of compound device (3) gang/individual mode selection…etc. External EEPROM can be removed if no vendor specified PID/VID or product string is required for the application.

GL852GT supports LQFP48 package type, provides full hub features such as (1) two-color (green/amber) status LEDs for each DS ports, (2) Individual/Gang mode power management scheme that indicates DS port over-current events. (3) Number of DS ports setting configured by GPIO setting (4) non-removable declaration configured by GPIO setting (5) Support both 93C46 and 24C02 EEPROM (6) power switch polarity selections…etc. QFN28 package supports only partial hub features but provides smaller footprint that targets space limited PCB layout environments such as embedded system or UMPC/MID applications.

特性 Features

• Compliant to USB specification Revision 2.0
• On-chip 8-bit micro-processor
• Multiple Transaction translator (MTT)
• Flexible design
• Low BOM cost
• Integrate USB2.0 transceiver
• Support operating temperature: -40°C~85°C
• Applications:
- Stand-alone USB hub / USB docking
- UMPC/MID, motherboard on-board applications
- Consumer electronics built-in hub application
- Monitor built-in hub
- Embedded systems
- Compound device to support USB hub function such as keyboard hub applications