GL854G是Genesys Logic公司推出的7端口HUB擴展芯片，兼容USB 2.0協(xié)議。GL854G實現(xiàn)了多個負載均衡的架構(gòu)來確保每個下行通道都能達到較高的傳輸速率。GL854G 實現(xiàn)了多個HUB配置參數(shù)到內(nèi)部的ROM中，使得應(yīng)用顆ic時候不需要在加一顆外部的EEPROM，可以節(jié)約成本。GL854G可以提供一個12MHZ的頻率輸出，此時鐘可以用作其他應(yīng)用的參考時鐘。不過在應(yīng)用是要注意pcb布線。QQ:1762516767 18675554078，原裝現(xiàn)貨，歡迎交流。（更多詳情）
GL854G的主要功能特性包括以下：
· Multiple Chip Package (MCP) architecture
Integrates two standard USB 4-port hub silicon dies into single chip
? Supports 7 USB 2.0 compliant downstream ports
? Multiple Transaction Translator (MTT)
? Provides dedicated TT control logics for each downstream port
? Superior performance when multiple FS devices operate concurrently
? Compliant with USB specification Revision 2.0
? Upstream port supports both high-speed (HS) and full-speed (FS) traffic
? Downstream ports support HS, FS, and low-speed (LS) traffic
? Backward compatible to USB specification Revision 1.1
? Each downstream port supports status indicator, with automatic and manual modes
? Conform to self power and bus power requirements
? Integrated USB transceiver
? Compliant with USB electrical requirements
? Ultralow power consumption
? Improve output drivers with slew-rate control for EMI reduction
? Internal power-fail detection for ESD recovery
? On-chip 8-bit micro-processor
? Support customized PID, VID by reading external EEPROM
? Support downstream port configuration by reading external EEPROM
? Smart power management features
Support individual / gang mode over-current detection for all downstream ports
? Automatic switching between self-powered and bus-powered modes
? Lower BOM cost
? Single external 12 MHz crystal / Oscillator clock input
? On-chip 5V to 3.3V power regulator
? Built-in upstream port 1.5KΩ pull-up and downstream port 15KΩ pull-down resistors
? Support low-cost 24C02 EEPROM
? Features for hub compound applications
? Support compound-device (non-removable in downstream ports) by I/O pin configuration
? Provide 12MHz clock source for other USB device connected to the downstream ports
? Available package type: 64 pin LQFP package (7x7mm)
? Applications:
? UMPC/MID, motherboard on-board applications
? Consumer electronics built-in hub application
? Monitor built-in hub
? Embedded systems
? Hub compound applications
GL854G的功能框圖如下：
GL854G的管腳圖如下：
GL854G的采購信息如下：
(以上信息由深圳市桑尼奇科技有限公司提供)
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