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GL852 [USB 2.0 MTT HUB Controller ]

other parts : GL852-MNGXX  GL852-MNNXX  GL852-MSGXX  GL852-MSNXX  GL852-ONGXX  GL852-MNG  GL852-MNN  GL852-MSG  GL852-MSN  GL852-ONG 

GENESYS
GENESYS LOGIC

GENERAL DESCRIPTION
GL852 is Genesys Logic’s brand new Hub solutions which fully comply with Universal Serial Bus Specification Revision 2.0. This series includes GL852.
GL852 embeds an 8-bit RISC processor to manipulate the control/status registers and respond to the requests from USB host. Firmware of GL852 will control its general purpose I/O (GPIO) to access the external EEPROM and then respond to the host the customized PID and VID configured in the external EEPROM. Default settings in the internal mask ROM is responded to the host without having external EEROM. GL852 is designed for customers with much flexibility. The more complicated settings such as PID, VID, and number of downstream ports settings are easily achieved by programming the external EEPROM (Ref. to Chapter 5).
Each downstream port of GL852 supports two-color (green/amber) status LEDs to indicate normal/abnormal status.

FEATURES
• Compliant to USB specification Revision 2.0
   − 4 downstream ports
   − Upstream port supports both high-speed (HS) and full-speed (FS) traffic
   − Downstream ports support HS, FS, and low-speed (LS) traffic
   − 1 control pipe (endpoint 0, 64-byte data payload)
      and 1 interrupt pipe (endpoint 1, 1-byte data payload)
   − Backward compatible to USB specification Revision 1.1
• On-chip 8-bit micro-processor
   − RISC-like architecture
   − USB optimized instruction set
   − Dual cycle instruction execution
   − Performance: 6 MIPS @ 12MHz
   − With 64-byte RAM and 2K internal ROM
   − Support customized PID, VID by reading external EEPROM
   − Support downstream port configuration by reading external EEPROM
• Multiple Transaction translator (MTT)
   − MTT provides respective TT control logics for each downstream port.
      This is a performance better choice for USB 2.0 hub.
• Each downstream port supports two-color status indicator, with automatic
   and manual modes compliant to USB specification Revision 2.0
• Support both individual and gang modes of power management and
   over-current detection for downstream ports
• Support gang mode of power management and over-current detection
   for downstream ports
• Conform to bus power requirements
• Automatic switching between self-powered and bus-powered modes
• Integrate USB 2.0 transceiver
• PLL embedded with external 12 MHz crystal
• Operate on 3.3 Volts
• Embed serial resister for USB signals and integrate pull-up resister
   for upstream USB signal
• Improve output drivers with slew-rate control for EMI reduction
• Internal power-fail detection for ESD recovery
• 64-pin LQFP package , 48-pin LQFP package , 48-pin QFN package
• Applications:
   − Stand-alone USB hub
   − Monitor hub
   − PC motherboard USB hub, Docking of notebook
   − Any compound device to support USB HUB function

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GL852G [USB 2.0 MTT Hub Controller ]

other parts : GL852G-HHGXX  GL852G-MNGXX  GL852G-OHGXX  GL852G-PMGXX  GL852G-MNG  GL852G-OHG  GL852G-HHG  GL852G-PMG 

Genesys-Logic
Genesys Logic

GENERAL DESCRIPTION
GL852G is Genesys Logic’s premium 4-port hub solution which fully complies with Universal Serial Bus Specification Revision 2.0. GL852G 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. GL852G has proven compatibility, lower power consumption figure and better cost structure above all USB2.0 hub solutions worldwide.

FEATURES
● Compliant to USB specification Revision 2.0
   - 4 downstream ports
   - Upstream port supports both high-speed (HS) and full-speed (FS) traffic
   - Downstream ports support HS, FS, and low-speed (LS) traffic
   - 1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe
      (endpoint 1, 1-byte data payload)
   - Backward compatible to USB specification Revision 1.1
● On-chip 8-bit micro-processor
   - RISC-like architecture
   - USB optimized instruction set
   - Dual cycle instruction execution
   - Performance: 6 MIPS @ 12MHz
   - With 64-byte RAM and 2K internal ROM
   - Support customized PID, VID by reading external EEPROM
   - Support downstream port configuration by reading external EEPROM
● Multiple Transaction translator (MTT)
   - MTT provides respective TT control logics for each downstream port.
● Each downstream port supports two-color status indicator,
   with automatic and manual modes compliant to
   USB specification Revision 2.0
● Built-in upstream port 1.5KΩ pull-up and downstream port 15KΩ pull-down resistors
● Support both individual and gang modes of power management
   and over-current detection for downstream ports
● Conform to bus power requirements of USB 2.0 specification
● Automatic switching between self-powered and bus-powered modes
● Integrate USB 2.0 transceiver
● Embedded PLL support external 12 MHz crystal / Oscillator clock input
● Optional 27/48 MHz Oscillator clock input
   (Only available in LQFP48/ LQFN46 package)
● Support compound-device (non-removable in downstream ports)
   by I/O pin configuration (Only available in LQFP48/ LQFN46 package)
● Number of Downstream port can be configured by GPIO without external EEPROM
   (Only available in LQFP48/ LQFN46 package)
● Built-in 5V to 3.3V regulator
● Improve output drivers with slew-rate control for EMI reduction
● Internal power-fail detection for ESD recovery
● Available package types: 48 pin LQFP, 28 pin QFN, 28 pin SSOP and 46 pin LQFN
● 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

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