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USB2512B-AEZG 参数 Datasheet PDF下载

USB2512B-AEZG图片预览
型号: USB2512B-AEZG
PDF下载: 下载PDF文件 查看货源
内容描述: USB 2.0高速集线器控制器 [USB 2.0 Hi-Speed Hub Controller]
分类和应用: 外围集成电路控制器PC时钟
文件页数/大小: 72 页 / 1689 K
品牌: SMSC [ SMSC CORPORATION ]
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USB 2.0 Hi-Speed Hub Controller  
Datasheet  
behaviors provide battery charging even when the hub is not enumerated and protect the hub from  
sustained short circuit conditions. If the short circuit condition persists when the hub is plugged into a  
host system the user is notified that a port has an over-current condition. Otherwise the PRTPWR is  
turned on by the host system and the port operates normally.  
7.3  
Battery Charging Configuration  
Configuration of ports to support battery charging is done through a strap option on the corresponding  
ports PRTPWR[x] / BC_EN[x] pin. see Chapter 5, Pin Descriptions, or through EEPROM or SMBus  
configuration load.  
7.3.1  
Battery Charging enabled via EEPROM or SMBus  
Register memory map location 0xD0 is allocated for battery charging support. The "Battery Charging"  
register at location 0xD0 starting from Bit 1 enables battery charging for each downstream port when  
asserted. Bit 1 represents port 1 and so on. Each port with battery charging enabled asserts the  
corresponding PRTPWR[x:0] pin.  
Revision 1.0 (3-11-09)  
32  
SMSC USB251x  
DATASHEET  
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