深圳市谷科智电子有限公司

  GL850G-HHY22

  GL850G is Genesys Logic’s advanced version hub solutions which fully comply with Universal Serial Bus Specification Revision 2.0. GL850G inherits Genesys Logic’s cutting edge technology on cost and power efficient serial interface design. GL850G has proven compatibility, lower power consumption figure and

 better cost structure above all USB2.0 hub solutions worldwide.

  GL850G provides multiple advantages to simplify board level design that help achieve lowest BOM (Bill of Material) for system integrator. GL850G integrated both 5V to 3.3V and 3.3V to 1.8V voltage drop regulator into single chip, therefore no external LDO required. Also, GL850G’s power enable pin supports both high-enable and low-enable power switch that provides better flexibility on component selection.

  GL850G embeds an 8-bit RISC processor to manipulate the control/status registers and respond to the requests from USB host. Firmware of GL850G 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 EEPROM.GL850G 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 

  GL850G是Genesys Logic的版本集线器解决方案，完全符合通用串行总线规范版本2.0。GL850G继承

了Genesys Logic在低成本和低功耗串行接口设计方面的技术。GL850G在所有USB2.0集线器解决

方案中都具有经验证的兼容性、低的功耗和更好的成本结构。

  GL850G提供了多种优势来简化电路板级设计，帮助系统集成商实现的BOM（物料清单）。GL850G集成

了5V到3.3V和3.3V到1.8V两种电压降调节器，因此不需要外部LDO。此外，GL850G的电源使能引脚支持高使

能和低使能电源开关，提供了更好的灵活性，在组件选择。

  GL850G嵌入一个8位RISC处理器来操作控制/状态寄存器并响应USB主机的请求。GL850G的固件将控制其通用

I/O（GPIO）访问外部EEPROM，然后响应主机在外部EEPROM中配置的自定义PID和VID。内部掩码ROM中的默

认设置响应主机而无需外部EEPROM。GL850G是为客户设计的，具有很大的灵活性。更复杂的设置，如PID、

VID和下游端口数设置，可以通过编程外部EEPROM轻松实现。