器件名称:
MC141556
功能描述:
USB Hub Controller CMOS
文件大小:
323.4KB 共18页
简 介:
MOTOROLA Freescale Semiconductor, Inc. Order this document by MC141556 SEMICONDUCTOR TECHICAL DATA Product Preview USB Hub Controller CMOS This device is a self-contained USB Hub which complies with USB Hub spec Rev 1.0. This device is used to expand the USB ports of your PC system while needed. Because of its self-contained and bus-powered/self-powered capability, it can hide the complexity from the user and be flexibly placed anywhere, such as monitor, keyboard, motherboard, hub-box, etc. The MC141556 consists of Serial Interface Engine(SIE), Hub Repeater, and Hub Controller, supporting one upstream port and up to five downstream ports. It also provides optional IIC(M_BUS) programmable Vendor ID and Product ID. Both Low speed mode (1.5 Mbps) and Full speed mode (12 Mbps) are supported by automatically detecting which data line (D+ or D-) is pulled high whenever downstream devices are connected to the bus or at power-up. MC141556 can be self-powered or bus-powered. When self-powered, MC141556 is powered by external 5 volt supply and capable of delivering 500mA current to each downstream port. Power management for all downstream ports supports power-switching and overcurrent detection with Individual or Ganged control; a self-powered MC141556 supports Individual control only, but bus-powered MC141556 supports either Individual or Ganged control. When Ganged control, PWRSW1 and OVR1 are dedicated for power management. IIC(M_BUS) interface is provided to set up customized Ve……
