深圳市华正源电子有限公司

深圳市华正源电子有限公司

型号：GL850G-37

封装：SSOP-28

包装：48个/管 200管/真空包

年份：年份

GL850G GL850A GL830

GL827L台湾创惟全系列

可开16%税票

GL850G-37是Genesys Logic先进的STT集线器解决方案，完全符合通用串行总线

规格修订2.0。 GL850G-37继承了Genesys Logic在成本和功耗方面的技术

高效的串行接口设计。 GL850G-37已被证明兼容，功耗更低，

优于所有USB2.0集线器解决方案的成本结构。

GL850G-37具有多种优势，可简化电路板级设计，帮助实现BOM（Bill

材料）用于系统集成商。 GL850G-37集成了5V至3.3V和3.3V至1.8V低压差

电压调节器集成到单芯片中，因此无需外部LDO。

GL850G-37嵌入一个8位RISC处理器来操纵控制/状态寄存器并响应

来自USB主机的请求。 GL850G-37的固件将控制其通用I / O（GPIO）来访问

外部EEPROM，然后响应主机在外部配置的定制PID和VID

EEPROM。内部掩膜ROM中的默认设置会响应主机而不需要外部

EEPROM。 GL850G-37为客户提供更好的设计灵活性。复杂的设置，如PID，

VID和下行端口设置数量等。通过对外部编程很容易实现

EEPROM，供应商命令或SMBUS模式（参考第5章）。

GL850G-37是一款全功能的解决方案，可支持Individual和Gang（4个端口作为一组）模式

电源管理（独立模式仅适用于QFN28封装）。下行端口号和

非可移动下游端口可以通过I / O捆扎，SMBUS或供应商命令进行配置。开关

模式只能由SMBUS和I / O捆扎配置。 GL850G-37也支持开关模式

高/全速/低速模式，上行端口可以绕过下行端口。这个功能只是

可在下游端口1中获得

--------Compliant to USB Specification Revision 2.0

**Support 4/3/2 downstream ports by I/O pin configuration

**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

**Performance: 6 MIPS @ 12MHz

**With 64-byte RAM and 2K mask ROM

**Support customized PID, VID by external EEPROM/vendor command/ SMBUS

**Support downstream port configuration by external EEPROM/vendor command/ SMBUS

--------Single Transaction Translator (STT)

**Single TT shares the same TT control logics for all downstream port devices. This is the most cost

effective solution for TT.

--------Integrate USB 2.0 transceiver

**Improve output drivers with slew-rate control for EMI reduction

**Internal power-fail detection for ESD recovery

--------Low BOM cost

**Built-in 5V to 3.3V regulator

**Built-in upstream 1.5KΩ pull high and downstream 15KΩ pull-down

**Built-in PLL supports external 12 MHz crystal / Oscillator clock input

**Embed serial resister for USB signals

--------Smart power consumption

**Support both individual and gang modes of power management and over-current detection for

downstream ports (Individual mode is not supported by SSOP 28 package)

**Conform to bus power requirements

--------Flexible design

**Number of Downstream port can be configured by I/O strapping without external EEPROM/vendor

command/ SMBUS

**Support compound-device (non-removable in downstream ports) by I/O strapping/vendor command/

SMBUS

**Automatic switching between self-powered and bus-powered modes

**Configurable non-removable device support

--------Available package:

**28 pin QFN (5x5mm) and 28 pin SSOP (209mil)

--------Applications:

**Stand-alone USB hub

**PC motherboard USB hub, Docking of notebook

**Gaming console

**LCD monitor hub

**Any compound device to support USB hub function